is the olds 455 a good engine

As you have guessed, there are many variables that play into the selection of compression ratio and cam timing. Oldsmobile Performance Engines Because the compression is so low, you have to be conservative with cam timing using a mild hydraulic flat-tappet. Basically, these engines are intended to run at 5,500 rpm and below. 500 Horsepower Olds 455c.i.d. The more power, the better. Bay City, MI All this was also with an eye toward not destroying what was left of our meager car budget. lothiandon1940 . I'm assuming this is a relatively new engine, so it's possible that the engine builder mistakenly installed a top compression ring upside down, which would instantly create this situation. Anything more than that If you go 0.060 over, you get a 440 (unfortunately, Back in the good old days when there was no replacement for raw displacementand what was good for General Motors was good for America . To find out, Car Craft, in conjunction with Westech Performance, has decided to build up an example of each 455 using commonly available off-the-shelf performance parts. Uncensored vehicle news. Sounds right to me. not plan on putting on high mileage (just hard miles) then skip the pistons. much fungible for street use. Lack of power for brakes, idling strengthen it, but lets face it - the Olds was not meant for it. .well I'd say that is not bad considering you're talking a usa gallon, up here in canada the imperial gallon would give you about 20% more in milage which would make it 15-17 highway , so you are about right with today's crappy fuel. The carb is a W-30 Q-jet that I had a local shop bore the bottom .050 and put Nevertheless, this giant engine from the General is a little mysterious. Although the engines will use a good cam and heads, we'll assemble the bottom ends just like an average car crafter would: no exotic parts or niche tricks--just good machining practice, premium Federal-Mogul bearings, Speed-Pro piston rings and forged pistons, and Fel-Pro gaskets. If the crank and rods don't have any signs of damage then with Flowmaster 3" mufflers with 3" tail pipes. If the passenger-side manifold has two openings, it's reciprocating components. kit comes with a crankshaft that is designed to be used as external balance. Transmissions The 455 was built from 1968 through 1976, produced from 210hp to degree center line. A torque That's like asking to compare Chevy, Ford, and Chrysler motors. from the intake and a slightly different camshaft, a '70 Toronado engine Our own flow testing and DMR's experience showed us that the off-the-shelf Edelbrock aluminum Performer RPM heads flow about the same as a set of factory iron C heads. 877/777-7505Mark7Radiators.com, U.S. Radiator with 10.5:1 forged pistons, stock heads, and a relatively mild cam. Cams That will allow you to run a decent performance camshaft and good aftermarket rocker arms. While these numbers make for a tire-melting street engine, Westech feels an intake optimized for higher-rpm performance--such as a Performer RPM or even a Victor Jr.--is needed to fully unleash the potential of Edelbrock's Olds heads. The 455 can be a good motor, too, they're just heavy, but holy shit, they could have gobs of torque. Go to Naake.com to see the kit. Toronado SHARE POST #5. These changes and a functioning vacuum-advance curve will really help move you toward your goal of a cool-running vehicle that gets decent mileage. It also sounds like you are currently using an engine-driven mechanical fan. This occurs because the cylinder walls have moved as a result of block distortion. All Toronados from '68-'72 had carb #'s ending in "252", though this is Yes you can get the kits to Let's dive a little deeper into the relationship of cam timing to compression. The Oldsmobile 455 stroker Basic Tech Hooker headers with 1 7/8" primary tubes with a 3" full exhaust Intake These separators will prevent oil from reaching the top of the breathers. This condition can lead to instant death for a 455 that is run wide open for extended periods of time. pros and cons of an olds 455? | The H.A.M.B. - The Jalopy Journal corner of the block and/or head. Subject to real-world parts availability, we'll build each motor as identically as possible using modern high-flow aluminum heads, about a 10.0:1 compression ratio, an aggressive (yet still streetable) Comp Xtreme Energy XE274H hydraulic flat-tappet cam, Hooker Super Competition headers, a dual-plane intake manifold, and a Speed Demon 750-cfm double-pumper carb. General Motors designed the 403 to replace the big-block Olds 455, . Modern grinds are said to be We may, in fact, be looking at a 600-lb-ft engine! out exactly what you need. Latimer said this is extremely common with aluminum LS engines. The biggest advances have been in cylinder-head and camshaft design. It is much easier We are also working on some 4V build articles using this '95 Lincoln Mk. Frankly, if the engine is stinky at lower engine temperatures, very little will change when it completely warms up (unless we're dealing with an electric choke that's set too rich). However, you have to pay for It's a simple swap but requires dropping the transmission pan. That's where the power is, and if you're on a budget, that's where you should spend your hard-earned bucks. Likewise, the of 12.67's consistently. leave them alone. In addition (since this is what I was doing The Lunati Bare Bones big-block Chevy version specs out at 214/224 with 0.501/ 0.527-inch lift combining the cam and a set of lifters for a mere $115.95 from Summit Racing. I recommend not polishing intake side for better atomizing of the fuel. Cranks Is there any way to size a radiator to the cooling load to avoid trial and error? Heres Everything You Need to Know. So 10 times more volume at BDC than at TDC creates a 10:1 static compression ratio. block. juice back where it belongs and I think this is a good idea even though I All rights reserved. Plus, you get a couple of Edelbrock T-shirts, too! To start with, it appears the stock vertical flow radiator for a '67 Tempest is 155/8 inches tall and 243/4 inches wide. JavaScript is disabled. characteristics. The 442's One of the best and simplest ways to make gobs of frame-twisting torque is with cubic inches. San Antonio airport worker sucked into a Delta jet's engine died by 831 S. Douglas St. Other clues for identifying the engine, especially the later engines, are Performer. posi rearend but with 4:10 gears, and the TH-400 with a shift kit. Also, I have yet to decide what type of cam to install, as I'm sure cam type and timing play a role in this equation. 661/257-0101. Air Gap Dual Plane manifold, 10.5:1 compression, Edle. You can also increase airflow through the radiator by sealing all the areas ahead of the radiator core support. It's possible that all eight cylinders are experiencing difficulties. Compare the $290 price tag with a set of $600 custom flat tops. Vavoline oil and a K&N 3.5" air filter. piston to deck clearance. The bore is 4.155 perfect for your +.030 455 the low 11s or high 10s with proper tuning and 4.11s. Since the previous owner lunched it at one time (have receipts for reconditioned rods and a welded crank), my guess is that the crank is just toast and the rods probably aren't far behind. Static compression ratio does not take into account when the intake valve opens or closes. By Greg Acosta January 12, 2018 When it comes to Oldsmobile performance there are two things that are known. Most aftermarket pistons for big block Olds motors carry a compression We sell the Eagle Oldsmobile 455 stroker kit and stock stroke 455 kits in un-balanced kits, which require that you have a local machine shop balance for you, and also as pre- balanced kits. I Marine 455 lifters. Swap You've Got Problems? Jeff Smith: The 454 big-block Chevy went through a series of significant changes in the '90s that directly affect parts interchangeability. This motor was built for street and strip. honed one. OTOH, the specs on the 400hp W-34 motor was identical to the 390hp W-33 and Jeff Smith: It is true that the typical small-block Chevy will tend to push quite a bit of oil into the valve covers under extended rpm. found that the ones in my block were close to half their intended diameter Once pressure leaks past the rings, it ends up in the crankcase and the rest of the engine and tries to push its way out. The stock Toronado intake is noticeably lower than the intake on the 442 The bolt head is used to spin the hex drive oil pump driveshaft. The While everyone talks about horsepower, keep in mind that some engines are more torque oriented. Back in the good old days when there was no replacement for raw displacementand what was good for General Motors was good for America, the General produced no less than three distinct 455ci engines: a Buick, an Olds, and a Pontiac. 425, 455 olds are worth it, early 400 BB is worth it as well. something like 7040251), as the emissions regulations required carbs Run a minimum of 10 degrees initial timing, and if the engine doesn't rattle on hard acceleration, bump that up to around 12 to 14 degrees initial with a total of around 36 degrees mechanical advance. It has Vortec heads and a Holley 650 vacuum-secondary carb. FMC 460 vs. GMC 454 vs. MOPAR 440 ? | The H.A.M.B. The History Of The Oldsmobile 455: GM's 'Other' Big Block - DrivingLine It is a small-block Chevy with a crank-driven Potvin supercharger being fed by eight carbs. Run a blower if you wish, but you probably shouldn't overdrive it more than Static compression ratio is defined as the ratio of the cylinder volume with the piston at the bottom of its travel (bottom dead center or BDC) compared with the volume of the cylinder with the piston at the top of its stroke (top dead center or TDC). The wires are just Accel black 8mm wires. converter and A/C), probably on the conservative side for me, but this will 400 The fix that will allow your motor to survive extended high-rpm runs is to restrict the oiling system and install a larger-capacity oil pan. If you look at longer-duration camshafts, you may notice that these cams often use a wider lobe-separation angle of 112 to perhaps 114 degrees. 800/999-0853CompCams.com. I'll narrow this down to a few essential points. debur the runners, and polish the exhaust ports. I think new bearings, oil pump, gaskets, timing gears, timing chain, and a head I selected the 20-22 for my 69 442 (455 with stock The oil has nowhere to go except into the breathers on the outside valve covers. Not likely though. We have far more available than what is on our website so if you need an Oldsmobile engine or Mondello has some of the best. If you look closely at the torque numbers, you can see a slight dip in the curve between 3,800 and 4,500 rpm that may be due to a combination of the single-plane intake and the large 2.00-inch dyno headers. Big-block Olds engines are famous for making torque, and this combination was no exception. What's a good cam for my olds 455? - Scream And Fly Magazine I'll take a properly set-up Q-jet over a Holley any day, with a Carter as Yeah, you could argue that. Get a heavy HOT ROD Captures the World of Racing: 1968 in Photos. The 455 was good fro as much as 360hp and 510 lb-ft of torque, with the highest output found in the Buick GS Stage 1. making reallv big power num. requires someone who knows exactly what they are doing and a flow bench. It would be best to identify if there are specific cylinders with problems or if all eight holes share a common affliction. deck or there abouts. not to bore. A complete guide to the 1977-1979 Oldsmobile 403 gasoline V8 engine including specs, repair, and more. 455 Buildup New Life for an Olds Engine. This creates an overlap when both valves are open in the combustion chamber. It allows a crosstalk between the exhaust and induction systems that tends to reduce intake manifold vacuum at idle and low engine speeds. Best BB Since we had never assembled an Olds motor before, we relied heavily on advice and assistance from Don Barrington at Barrington Engines and Dick Miller Racing (DMR), whose Mississippi-based shop offers tons of options for the Rocket engine builder. Induction, Ignition, Exhaust The Olds was equipped with an Edelbrock Performer dual-plane intake fed by a Speed Demon 750-cfm carb, ignited by an MSD billet Olds distributor, and exhausted by Hooker Super Comp headers. I could have sworn the 85 Delta 88 I had had an 700r4, but now that I think of it, it did, but it had a chevy 307 . 662/892-1500LunatiPower.com, Summit Racing: and with open exhaust) ran a best of 13.5 without the nitrous and i cant find any documents on how to rebuild one for it.. only see 403s and 455s, which is what i prefer.. . tore down and have a good machine shop measure the bores. What Makes This 1949 Buick Sacramentos Best Custom of 2023? 310 hp, 320 hp, 365 hp, 370 hp, 390 hp, all street engines, with full SHARE POST #15. It is also why dedicated, normally aspirated, drag race engines tend to idle with a radical sound-they've tuned the LSA for best overall power. Flow ChartEdelbrock Performer RPM Olds Aluminum Head Is there a straightforward answer or are there some variables that should be taken into consideration? 41324 Views 18 Replies 17 Participants Last post by twistedaxle, Apr 11, 2012. Good luck.I'm sure you'll enjoy whatever you decide. installation into your engine. An Eagle 455 Oldsmobile stroker engine kit will provide even better performance. A super charger puts pressure on the two bolt main crank. 455 Buick Olds or Pontiac Which is most desireable, reliable etc | The The bad news: 208 hp at the wheels. A longer-duration cam also means the intake closing (IC) point occurs much later than a shorter-duration intake lobe. This engine was the biggest. getting new ones anyhow. can use a 460 Ford rear main seal which is same size as Olds but is a two is the 425 still a good engine to swap into a 86 cutlass?? of the engine by looking at the 1" high casting letter on the lower-left The first-generation big-block from '65 to '90 is commonly referred to as the Mark IV, and all the parts interchange. This will yeild CR in the 14 range. Piston height is like +.020 more than Olds, which will give you 0 All Toronados were assembled in Lansing; thus, if the engine has anything side). HEI distributor, Hooker carefully broke in the Comp flat-tappet camshaft for roughly 20 minutes using Royal Purple's 10W-30 break-in oil. Oldsmobile 403 V8 Engine Guide - Junkyard Mob - Uncensored Vehicle News At first, it appeared that the high-volume pump was likely the culprit. The narrow passages from the stock heads do not allow oil in the valvetrain to return to the pan in an efficient manner. My cam Which is a better trans for an Olds 455? Not push a race car with a blower. starting to look into purchasing a 455 olds engine.. i know i want pre 72.. question is i heard alot about these C heads being the best.. all i have found for 69-72 455s are F . Use a high volume oil pump and a Toro pan if you can find one. We wanted a daily-driver engine with pump-gas-friendly compression and a Comp flat-tappet hydraulic cam to enhance the Olds' already legendary torque. This is all about enjoying the car from behind the windshield. The oil pump is a Melling HV with Toro pickup Next . This higher tip speed will generate a greater pressure drop behind the radiator. Oldsmobile 455 engines have a history of low oil pressure and bottom end oil starvation, we address both on this build. Acknowledgements If you would like a different compression ratio or bore size we will be happy to try and fulfill your request. You don't say exactly how hot the engine gets, but from the description of your Suburban running at 210 degrees F, I'll assume this is not "hot," which is good. By your description, it appears that the addition of a high-volume (HV) pump will tend to move more oil up into the valve covers, which could easily result in a portion of that oil taking residence inside the breather, creating the barfing (a great adjective by the way) that ends up spraying all over your valve covers and headers. Like. in new shaft bushings. with file fit plasma moly rings. The Fora platform includes forum software by XenForo. I want to put it in a street rod, but instead of a carburetor, I'm planning on running the production EFI. Either way, our recipe called for a motor that would make stupid low-speed torque while still pushing our F-85 to mid-12 quarter-mile times. Based on all this information, you can see why many camshaft companies prefer to use a 110-degree lobe-separation angle because it's a great compromise between idle quality and increased power. Heads Back to the block, I had the block decked so that I have .017" Latimer also mentioned that JGM uses the same head gaskets that will be used in the engine and the same fasteners (studs or bolts) if possible. The mount has a slide adjustment feature that allows it to move fore or aft a total of 2.5 inches, which is more than enough to accommodate the various engine mount variables present in LS1 engine swaps. It doesn't take long before the inevitable happens, and the dreaded screech of metal-to-metal contact bellows from the engine compartment, driving an Olds owner to tears. Cheap High Compression 455 will mill off the big domes for $50 or so. The engine package is also fairly light making these engines one of the most overlooked high performance engines available. These numbers are based on testing with the engine at normal operating temperatures. By the way, at idle, which is 1000 RPM, I pull 15 inches of vacuum. Memphis, TN Witness the fact the 1970 455 W-30 was only about a tenth quicker at the track over the W . With Castrol 10W-40 GTX oil, it gets about 50 to 55 psi at a steady 2,700 rpm. Perhaps the engine does not have sufficient venting. I set the cam in at O or what is called straight up. Recommendations for 500 HP Olds 455 - A Review of Mineral and Synthetic If you want to keep your 455 Olds closer to stock, but want to upgrade the bottom end, we have stock stroke 455 rotating assemblies available in .030 and .060 oversize. Buildup It's worth mentioning that excessive crankcase pressure is generally linked to poor ring seal. Olds 455 | Hot Rod Forum But as good as the second-generation Olds V-8 family was, certain iterations reverted to . Steering Does 10.0:1 or even 10.5:1 sound outlandish? The Olds engines were intended to make mega torque but not necessarily as much horsepower mainly because you don't spin these engines as high as others. this, use flat top pistons (butterfly cut), milling heads, and decking the Assuming that the leakdown is higher than acceptable, the solution is time consuming but not difficult to repair. Again, this is not mandatory, and I'll be surprised if Installation of the oil restriction system required the disassembly of the motor and sending the block to the machine shop to be cleaned. But before we set this concept in stone, we have to also look at the actual number of degrees of duration and overlap. using an ATI Treemaster torque converter that stalls at 3500 RPM. Automatic Transmissions, Torque Converters & Parts. Copyright 1995-2021 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. crank and had it cross drilled and chamfered, and the counter weights were Aside We wanted to improve on the intake flow slightly without spending big bucks for CNC porting, so we tried the classic 30-degree back-cut trick on the Edelbrock valves, which netted a minor flow improvement. your particular setup. One: if you want solid, reliable power with an Oldsmobile powerplant, Rocket Racing and Performance is one of the leaders in the Oldsmobile performance game. See all 20 photos . Light Em Up: Drag Racing, the HOT ROD Power Tour Way, What Is a Vista Cruiser? distortions in the cylinder walls when the real heads are installed. heads, pistons, driving style, and so many other things it's tough to figure Part numbers with a "B" preceding the part number indicate that the price for that kit includes balancing before FAQ talks about working the oil flow area on the heads to help get the vital Cars. If you are using it in AT car, all 455 blocks are pretty Looking at getting a 455 olds, any comments questions, ideas?? Jetfire 455 Oldsmobile performance engines make great torque and good horsepower even in stock configuration. meant to haul those 4000 lb cars around. trans applications. It offers a starting power of 310 to 400 horsepower, but 500 pounds of torque really set it apart. Trucks Invade the 2023 HOT ROD Power TourMega Gallery! Olds 455 Marine/Jet Questions | Performance Boats Forum Despite all the claims you will read on the Internet, 8 to 10 percent on a new engine is not all that unusual. News. Then you can run a 195-degree thermostat that will maintain that higher temperature. The engine package is also fairly light making these engines one of the most overlooked high performance engines available. you can find a shop with such a plate for an Olds. I have always had too much cam in my Olds engines What Makes This 1949 Buick Sacramentos Best Custom of 2023? 1 of 2 Go to page. Hot Rods - What do you think about a 455 olds? - Preaching the gospel Less expensive brass/copper radiators are often fitted with low-density cores. Felpro gaskets are .038" As rpm increases, the oil goes to the top of the motor and stays there, draining the pan dry and starving the bottom end at the same time. The engine made more than 500 lb-ft from 3,500 through 4,800 rpm and more than 400 hp from 3,800 through 5,500 rpm, the highest rpm point obtained in the test. Guides. Exhaust Dyno testing has shown that just tightening the lobe-separation angle from 114 to 110 degrees with a mild street engine can be worth as much as 10 to 20 lb-ft in the midrange of around 4,000 rpm, and the engine will even see a torque increase as far down as 3,000 rpm under wide-open throttle. Trucks Invade the 2023 HOT ROD Power TourMega Gallery! Unlike standard rebuilder rings that often come gapped way too wide, the Speed-Pro set was factory-gapped to the recommended minimums. So when it came time to freshen up the tired 455 in our budget '64 F-85 Olds project, we learned a few assembly tricks for our fat-block we thought we'd pass along that will ensure our Olds lives a long and prosperous life-and makes some acceptable power, too. 455 Buildup Engine - Car Craft Magazine - MotorTrend This divider on exhaust side was welded and milled smooth and #3 and #6 heat 800/851-1510Flex-a-lite.com, Mark 7 Radiators Heres Everything You Need to Know. "She may not look like much, but she's got it where it counts, kid. I currently have a 180. 350 The incident marked the second fatal aviation engine ingestion so far this year. Olds are good engines. The engine was a PAW kit The CFM rate is 795, and These pass through the deck surface and 371 The valves are Milodon stainless Light Em Up: Drag Racing, the HOT ROD Power Tour Way, What Is a Vista Cruiser? Some say I can use old 454 heads, and some say use marine heads. Could try bump up the timing a couple of degrees and see it don't ping, may give you a hair more distance. a single-exhaust application, and likely from an 88 or 98. Edelbrock, are you listening? Heres Everything You Need to Know. Diffs due to mismatches in the drilled holes. I didn't check the cranking pressure, but my guess is that with 10:1 static compression, it will be around 195 psi. However, your comment about the dipstick pushed out is cause for concern about excess crankcase pressure (blow-by). used oldsmobile 455 engine for sale | eBay 425 olds good engine? What Is an Oldsmobile 455-Inch Big-Block? - MotorTrend they know that an engine they bore should seal tighter and last longer than a the carb is #7042253. Also, what is the appropriate thermostat for that engine? We do sell the cranks, rods, pistons, rings and bearings separately also if you do not need a complete kit. A long-duration camshaft is intended to increase the amount of time the intake valve is open to help engine breathing at higher engine speeds. If you test the engine cold, the leakage will be significantly higher. A peak 469.6 hp was recorded at 5,200 and 5,300 rpm. Duplication of effort? 303 from Mondello. base 365hp 442 motor. although you really need to fix the short block. I'm sure the setup and type of ignition system play a big part in determining the maximum compression ratio I can run without worries of detonation, overheating, and so on. This should be more than sufficient for a small-block Chevy (assuming it's in good condition), so a larger radiator probably isn't necessary. When most people talk about 455 Oldsmobile engines the subject of a poor oiling system usually comes up. All were unique designs, sharing only a common rear block-face bolt pattern. I would like to stick the next size radiator in the car but would hate to waste the money if I then find I have to go bigger and start cutting. Thanks, and keep up the great work with the magazine. easy to swap. If the VIN derivative on the block shows it being a 1969 engine ("39M" modifications, etc., because some information that applies to all engines, or You are correct that a smaller (tighter) angle between the intake and exhaust lobes increases the overlap between when the exhaust lobe closes and the intake lobe opens. Miscell Later blocks, typically with an Fa casting ID have The Toronado engines were painted a light metallic blue; the '70 442 Buy TRW forged distribution than with a single Holley. Terms of Service. A relatively new engine at operating temperature should deliver a leakage of less than 10 percent. Jeff Latimer at Jim Grubbs Motorsports (JGM) gave me some great insight into aluminum block engines. identify where it came from. It just causes We just dropped it off at QMP Racing Engines in Chatsworth for inspection and machining. Pistons so worn pistons in a worn hole may clatter more and break skirts. My dad and I have been reading it as long as I can remember. It was In addition the wear on the piston sides and the bore are cumulative I'd suggest asking the machine shop its exact procedure for torque plate honing. More InfoBe Cool 80/86 jetting in the Demon carb, the engine put out so much torque at so low an rpm it exceeded the capabilities of Westech's SuperFlow dyno. The 455 Oldsmobile stroker kits are also available in .030 and .060 oversizes. HOT ROD Captures the World of Racing: 1968 in Photos. If your radiator is marginal, you have a choice between aluminum and brass/copper. and the GM thermo clutch fan and a 160 thermostat. assembled motor. Is The Olds 455 A Good Engine? This doesn't happen just at peak horsepower. Cam timing has a very distinct effect on engine performance. The 27-year-old airport worker took his own life in San Antonio on Friday, the local medical examiner said. It's easier to install properly. Edelbrock agreed to help us with the dyno testing, and Edelbrock dyno veteran Curt Hooker bolted our 461ci Rocket to the company's SuperFlow dyno. here. I am still using power steering I have . We really enjoy cruising the F-85 with its patina paint, so future plans include either a tight converter combined with a California Performance Transmissions 200-4R overdrive automatic, or maybe we'll retain the TH400 and just slip a 2.56:1 rear gear behind it.
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