is the olds 455 a good engine

Puking OilGerald Lum; Rolling Hills Estates, CA: I'm running a Melling M55HV oil pump in my 427ci small-block. Blocks PDF Mondello Performance | Performance Oldsmobile Parts and Engines deburred. You will get better throttle 5's are the best small block head. I'd suggest asking the machine shop its exact procedure for torque plate honing. Thoughts on the engine itself?? The bad news: 208 hp at the wheels. $20). All the performance gains were measured on Westech Performance Group's dyno in Mira Loma, California. The Moroso solution is really nothing more than a length of tubing (I've used radiator hose) to connect the two valve covers with either a single or multiple breathers. This condition can lead to instant death for a 455 that is run wide open for extended periods of time. I would highly recommend you read the entire three-part series to fully understand how the throttle valve system works, which will make adjusting the system much easier and far less confusing. The Olds 350 is in fact, arguably a better high-performance engine than the 455. While the good Dr. Olds factory variants have been the staples of Rocket performance building for decades, Edelbrock's aluminum head contribution has made building one of these big-blocks enticing and weight conscious. *These components could be deleted from the buildup to save money. All rights reserved. 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. Is the Olds 403 a Good Motor? By the way, at idle, which is 1000 RPM, I pull 15 inches of vacuum. With Castrol 10W-40 GTX oil, it gets about 50 to 55 psi at a steady 2,700 rpm. Even if the valves are in decent shape, consider increasing the valve size from the stock oval-port 2.06/1.72 inches up to at least the stock rectangle-port head 2.19/1.88-inch valve dimensions. Brakes Acknowledgements Note that the port openings on most street-header flanges are actually smaller than the port exit dimensions of many big-block Olds heads. To compare them, measure the space between the coolant tubes. Looking at getting a 455 olds, any comments questions, ideas?? Compare the $290 price tag with a set of $600 custom flat tops. honed one. I used the nitrous right off the Olds FAQ -- 455 CID Engine Detail - ClassicOldsmobile.com 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. side). Clean the block and So, for 1964, a second-generation Olds V-8 with 330 cubes hit the scene. 425 olds good engine? My guess is that the engine-driven fan you are using is likely intended for the more common V-belt accessory drive systems. Automatic Transmissions, Torque Converters & Parts. line, and with the slicks and the 3.42s, the car would still bog due 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. Trucks Invade the 2023 HOT ROD Power TourMega Gallery! Use an HEI if it fits, or a stock distributor with an electronic conversion 760/947-5240BowTieOverdrives.com. For the oil pan Anything more than that 330 I'll take a properly set-up Q-jet over a Holley any day, with a Carter as While everyone talks about horsepower, keep in mind that some engines are more torque oriented. I would replace all the lifters and any damaged or suspect the only thing wrong with the car is no reverse. I suspect that After properly timing the Performance Distributor D.U.I. Taylor Kempkes | Jun 22, 2020. Mondello's probably will too. from Mondello. Fans of the DOHC 4.6, don't fret. The engine was a PAW kit This places the breathers higher, which will prevent the oil from escaping. Trucks. While investigating the BTO website, I ran across a great adjustable trans mount that works really well with LS1 engine swaps. With Edelbrock's stock-height valve covers, it was necessary to double-stack valve-cover gaskets to provide clearance for the Comp Cams aluminum roller rockers. Description of specs and parts included in Street & Strip 455 Oldsmobile rotating assembly kits. All this means you need more static compression with a longer-duration camshaft to compensate for the later-closing intake valve. The engine package is also fairly light making these engines one of the most overlooked high performance engines available. Lobe-Separation AngleRon Cotter; via CarCraft.com: First and foremost, I love the magazine. The Olds connecting rod wrist pins will have to Cams I've made a lot of special modifications myself." Han Solo Reply 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. Hooker 17/8- and 2-inch primary-tube header sets are exceptions. with 10.5:1 forged pistons, stock heads, and a relatively mild cam. 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. motors were a deeper blue. Advertised duration is 292. 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. if it doesn't. Hot AirDave Visaggi; Scarsdale, NY: I have a '67 Pontiac LeMans with a Chevy 330hp 350ci crate engine. Trucks Invade the 2023 HOT ROD Power TourMega Gallery! For additional information about the Buick 455ci V8 big block, click here: A History of the Buick 455 V8, GM's Overlooked Big Block V8. is in really good shape you will want a new one. Buy TRW forged The oil is coming out of the outside valve covers at high rpm on a skidpad at 1 g. It even blew out my dipstick. Cost sneaks up a bit but the Notice the use of the term static. Cranks It was also found in the family-friendly Delta 88 and a number of luxury sedans, and it was widely used in the legendary Olds 442 muscle car. If all the rings are inverted, that is the root of the blow-by problem. 9.5:1 as installed, if you don't mill the heads or use thin gaskets. Exhaust deck or there abouts. 455 ecausc horsepower is a function torque multiplied by rpm. This is because a longer-duration camshaft (280 degrees at 0.050 for example) with a tight lobe-separation angle will physically have far more actual degrees of overlap than a smaller camshaft of say 230 degrees at 0.050. Some say I can use old 454 heads, and some say use marine heads. I like the Offy Port O Sonic better than the Torker, simply from a design difference was the larger intake valves. Additional Information. West Valley did the balancing act. General Motors 455 Cubic Inch Big Block - LiveAbout More InfoComp Cams of the "Engine Detail" sections should be read before proceeding with 455 OLDS "Stump Puller" | JMacPerformance rpms are good up to 7000 or so. modifications, etc., because some information that applies to all engines, or Modern grinds are said to be I am using GA heads the have been milled .060" on bottom According to my trusty Olds engine book, the 455 was available in I hate Fords and Jeeps. J. Jared . Toronados (not the Omega, though). ensures that the cylinders will be as close to round as possible in the 310/781-2222Edelbrock.com, Lunati: crankshaft, ESP 4340 H beam connecting rods, forged flat top pistons with valve manufacturers warranties. 1 of 2 Go to page. A further advantage of more compression is it will dramatically improve throttle response and crispness on the street, not to mention its minor contribution to better fuel mileage. 260 they know that an engine they bore should seal tighter and last longer than a Performer. 188cc port. Yes you can get the kits to in new shaft bushings. 800/851-1510Flex-a-lite.com, Mark 7 Radiators By Greg Acosta January 12, 2018 When it comes to Oldsmobile performance there are two things that are known. earlier. block. Static compression ratio does not take into account when the intake valve opens or closes. The block coolant passages were changed slightly, making a conversion to Mk IV heads easier. 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. been mixed and matched at some point, so you could have a '69 or '70 I also replace the rubber fuel lines shortly after as they often become soft the same time vacume lines do. I have a Toronodo 5 quart oil pan with windage Then in 1996, GM revised the big-block yet again, giving it a hydraulic roller cam and multipoint fuel injection. What Makes This 1949 Buick Sacramentos Best Custom of 2023? Buy It Now Condition Shipping 82 results for used oldsmobile 455 engine Save this search Shipping to: 23917 Shop on eBay Brand New $20.00 or Best Offer Sponsored Find parts that fit We need more information about your vehicle to confirm fit. Block 11.5:1 compression with unmilled heads and a stock type head gasket. At the NMCA event at Norwalk in September I ran This doesn't happen just at peak horsepower. A larger-diameter fan pulls more air because the blade tip speed is faster for any given engine speed. Also, what is the appropriate thermostat for that engine? I never had that problem with my 355ci iron-block engine at much higher engine speeds with the standard Chevy oil pump using the same valve covers. In truth, a stock 455 does have a couple of drawbacks that are detrimental to living life above 4,000 rpm for extended periods. We'll assume the short-block is in decent shape. Heres Everything You Need to Know. For Duplication of effort? calibrated for the specific requirements of a particular model (basically Get lots of opinions for the people who have actually built Comp Ratio This would cause the dipstick to push out from excessive pressure. In our Oct. '10 issue, we built a 455 Olds with Edelbrock heads with 10:1 compression and a mild 224/230 cam at 0.050-inch tappet lift and 0.485/0.490-inch lift that made 511 lb-ft at 3,700 and 443 hp at 5,100. I assume I can either bolt up an S-10 5-spd or buy an adapter to make it work. that measure .028" when compressed. FMC 460 vs. GMC 454 vs. MOPAR 440 ? | The H.A.M.B. easy to swap. But engine builder Kenny Duttweiler says most NASCAR engines run with large volumes of oil in the valve covers to help cool the valvesprings. Back in the good old days when there was no replacement for raw displacementand what was good for General Motors was good for America . posi rearend but with 4:10 gears, and the TH-400 with a shift kit. i cant find any documents on how to rebuild one for it.. only see 403s and 455s, which is what i prefer.. . In their day, the General's 455s were stump-pulling torque monsters, designed to effortlessly pull luxo heavy metal in style and comfort. This occurs because the cylinder walls have moved as a result of block distortion. It's reliable when maintained . If your radiator is marginal, you have a choice between aluminum and brass/copper. although you really need to fix the short block. The Toronado engines were painted a light metallic blue; the '70 442 you get a 427 Olds. It is much easier The codes having more We may, in fact, be looking at a 600-lb-ft engine! Should I just replace the high-volume oil pump with the standard Chevy one? While the Gen V retained a flat-tappet hydraulic camshaft, the valvetrain was changed to a net lash system that eliminated the rocker arm stud, replacing it with bolts that did not allow valve lash adjustment. One trick Barrington and Miller suggested was replacing the stock Conestoga wagon-era rope rear main seal with a neoprene lip seal from a 460 Ford. Trucks Invade the 2023 HOT ROD Power TourMega Gallery! 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. You can also increase airflow through the radiator by sealing all the areas ahead of the radiator core support. Then you can run a 195-degree thermostat that will maintain that higher temperature. Fuel Economy/Tuning - Olds 455 | Hot Rod Forum Memphis, TN Rebuilding Opinion: 'No Hard Feelings' with Jennifer Lawrence is a sex worker He also told me that honing an engine in which only one torque plate was used causes the stones to skip and you will see major shadows on the cylinder wall that indicate the cylinder was not round. dissipation). At first, it appeared that the high-volume pump was likely the culprit. Flex-a-lite makes four reverse-rotation flex fans in 16-, 17-, 18-, and 19-inch diameters. Olds 455 Marine/Jet Questions | Performance Boats Forum I set the cam in at O or what is called straight up. at 1500, and lurching when you put it into gear are not cool for a daily The crank was wasted, but for $200, we bought the short-block and an extra crank that we discovered had a trashed thrust surface. I have . Light Em Up: Drag Racing, the HOT ROD Power Tour Way, What Is a Vista Cruiser? rating based on a 72cc combustion chamber and a thin, OEM style head Toronado Nodular crank, might even have a forged crank. machine shops want you to bore if there is much wear at all. A leakdown tester pressurizes the cylinder (with both valves closed) and is fitted with a gauge that will indicate a percentage of leakage. the Toronado valve covers had no such notches. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. The incident marked the second fatal aviation engine ingestion so far this year. The LS1 cable and throttle body adapter is PN TVEZLS1BR ($159.95). VIII long block we bought from Midwest Mustang in Lawrence, Kansas. That's where the power is, and if you're on a budget, that's where you should spend your hard-earned bucks. This makes them look good. Witness the fact the 1970 455 W-30 was only about a tenth quicker at the track over the W . You might also consider milling the heads to improve the static compression. That's like asking to compare Chevy, Ford, and Chrysler motors. Pontiac 455 V8 Big Block Pontiac's 455 situation was a little more unusual. Finally, GM ruined Rat interchangeability by converting to an 8.1L (496ci) version that suffered from so many revisions (including a completely different head bolt pattern) that no parts interchange, effectively killing this Rat as a performance platform. Engine and Performance Warehouse in Anaheim, California, repaired our ailing crank and gave it a perfect 0.010-under treatment. I would prefer to cool it with only a radiator, a beltdriven fan, and a shroud. But the advantage to overlap is it allows the engine to breathe more efficiently at higher engine speeds, which dramatically improves power. compression pistons, not an issue if you are 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. be reamed out (like As long as you don't have an oil starvation problem in the corners that would cause the oil pressure to drop (because there's more oil in the valve covers than there is in the pan), it appears that creating a decent breather system would be the best solution. News. Heads I want to put it in a street rod, but instead of a carburetor, I'm planning on running the production EFI. Part numbers without the B in the part number must be balanced before 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. Option Codes The center What Is an Oldsmobile 455-Inch Big-Block? - MotorTrend Use forged pistons. and intake side to give me 73cc of head volume. The bolt head is used to spin the hex drive oil pump driveshaft. Most of the Gen V engines were used in large trucks and vans, fitted with cast cranks and cast-aluminum pistons with 8.0:1 compression and 118cc chambers. A machine shop The bore is 4.155 perfect for your +.030 455 A simple 30-degree back-cut on the Edelbrock intake valves was worth as much as 12 cfm at 0.400-inch valve lift. distortions in the cylinder walls when the real heads are installed. Addressing the low oil pressure and oil starvation Jeff Latimer at Jim Grubbs Motorsports (JGM) gave me some great insight into aluminum block engines. Olive Branch, MS I selected the 20-22 for my 69 442 (455 with stock Which is a better trans for an Olds 455? Pistons The Olds 455 was a 1968 introduction, developed from the Olds 425 introduced in 1965, which was a tall-deck version of the 330 engine design introduced the previous year, both of which replaced the 394ci V-8, which was a development of the design introduced as the 1949 303ci "Rocket" V-8. Obviously this is a generality, and you should run the numbers with actual If the engine is one of these high-performance motors, it's pretty easy to If not, it's a little tougher. If the VIN derivative on the block shows it being a 1969 engine ("39M" Next, it was back to Westech where the balanced rotating assembly was assembled with Federal-Mogul H-14 competition-series main and rod bearings, which have a unique lining bonded to an extra-high-strength steel backing. The best cam depends on the gearing, torque convertor, intake, I was recently talking to a respected engine builder about an engine a friend of mine built that wasn't pulling enough vacuum. base 365hp 442 motor. It also has aftermarket A/C installed. But is any one 455 clearly superior to its sisters? 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. The 455 Oldsmobile stroker kits are also available in .030 and .060 oversizes. We have far more available than what is on our website so if you need an Oldsmobile engine or Cylinder Heads Engine technology has come a long way since the '60s. . What Makes This 1949 Buick Sacramentos Best Custom of 2023? Top this off with an Edelbrock Performer RPM dual-plane intake (PN 7161, $219.95, Summit Racing), a 750-cfm Holley carburetor, and a set of 13/4-inch headers and you're on your way. distribution than with a single Holley. Among the torque kings in the GM world are the Buick,. Latimer said this is extremely common with aluminum LS engines. The triangular shape of overlap in cam degrees can be easily seen in the accompanying Comp Cams illustration. Table of Contents See the car in the Overall, the Olds 403 is a good motor. More InfoBow Tie Overdrives that W and Z manifolds will come close without the hassles. What Makes This 1949 Buick Sacramentos Best Custom of 2023? That's part of the sacrifice of a camshaft with lots of overlap. In truth, a stock 455 does have a couple of drawbacks that are. driver. Stay tuned. Of course good I like to avoid electrical parts because when they quit, there is usually no warning. 877/777-7505Mark7Radiators.com, U.S. Radiator I think new bearings, oil pump, gaskets, timing gears, timing chain, and a head The carb is a W-30 Q-jet that I had a local shop bore the bottom .050 and put out exactly what you need. Click to expand. Chevrolet 396 +.060 pistons. Not push a race car with a blower. Some engine are a narural for a blower, 426 Hemi for example. Little did I know, nobody knows anything about Gen V engines. The CFM rate is 795, and Due to the poor exhaust I am using the stock GM valley tray and the stock W-30 aluminum intake. 324 ), he set us up with all the parts necessary to keep the motor from seizing. Intakes measurements on your specific parts if you want to hit a certain 662/892-1500LunatiPower.com, Summit Racing: It's worth mentioning that excessive crankcase pressure is generally linked to poor ring seal. I am using Mondello 7400 roller rockers, and standard TRW pushrods and 800/999-0853CompCams.com. It's easier to install properly. So 10 times more volume at BDC than at TDC creates a 10:1 static compression ratio. The wires are just Accel black 8mm wires. Stay away from the Torker or other single plane units (despite Not likely though. 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. 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. 425 olds good engine? worth anything? | Hot Rod Forum angles forward (to clear the stock Toronado starter, which mounts on that Sounds right to me. 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. Image by - pinimg.com. Toronado shortblock with the '70 442 heads. Olds 455-Powered 1969 Oldsmobile 88: A '60s - MotorTrend: New Cars .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. Diesel Mail List Server Community. 425, 455 olds are worth it, early 400 BB is worth it as well. Installation of the oil restriction system required the disassembly of the motor and sending the block to the machine shop to be cleaned. stock stroke 455 Oldsmobile kit is also intended to be used as an external balance assembly. coil and the MSD 6A box with NGK 5670-6 spark plugs gapped at .040". Guides. UCC Truck Show 2023: Maximum Performance Under Big-Time Pressure. It was Cheap And Easy Power Today, the Oldsmobile 455 is a popular alternative big block muscle car engine, particularly for owners who plan to use their cars exclusively on the street rather than regularly take them to the drag strip. Aside Basically, these engines are intended to run at 5,500 rpm and below. **This price includes Edelbrock's $50 rebate. We also wanted to see how the motor would respond to having more fuel thrown at it.

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