The Pontiac 455 has the most aftermarket parts available as well as the least expensive. The olds has less support than the pontiac, but still a few good places out there although more expensive. The olds is a great motor and can be built for a TON of power.
Full Answer
What is the difference between a Pontiac 400 and a 455?
Pontiac 400 always favored engine over 455. Buick. Olds was overstroked. Pontiac 400 always favored engine over 455. Ah, good info. Apparently the Buick 455 was also lighter and stronger than the other two from what I’ve read. Andrew, thanks for the block pictures btw. Which one of these is the most expensive to build?
Is a Pontiac 455 good for Junky cranks?
Where as an olds 455 from any year after 70, is well suspect for junky cranks, small valves so that makes Buick a bet in one sense, however that varies with how fast the guy wants to go. In this realm of super fast street motors with semi stock parts Pontiac blows both olds and buick away in terms of all out potential.
When was the last year a 455 was good forged?
Last of the super good forged old stuff beginning of 68, first good olds forged stuff was 65… small window of time.. Buick 455s that were setup with better factory parts were more common throughout the 70s.
Is the 455 a better motor than the rat?
The rat is the superior motor, however from a purist standpoint, the 455 (or any other brand correct motor) is proper per application. I for one, would never tear out a 455 or 400 from a Pontiac and throw a Chevy, Buick or Olds motor in it.
Is Oldsmobile and Pontiac the same?
Facing financial problems and restructuring efforts, GM announced in 2008 that it would follow the same path with Pontiac as it had with Oldsmobile in 2004. It would discontinue manufacturing and marketing vehicles under the Pontiac brand by the end of 2010.
How much horsepower can you get out of a Pontiac 455 engine?
How Much Horsepower Can You Get Out Of A Pontiac 455 Engine? During 1970 and 1971, the 455 High Output motor was able to output 335 horsepower and 480 feet of torque respectively. In 1972, Pontiac's torque decreased by 42 horsepower and weight to 415 feet-pounds from 300 horsepower.Feb 7, 2022
How much horsepower does a Pontiac 455 have?
360 horsepowerRated conservatively at 360 horsepower and producing a tremendous 500 pound-feet of torque, the 455 HO gave the GTO the powerful aggression needed to appeal to performance-minded buyers.
How much horsepower does a Oldsmobile 455 big block have?
How Much Horsepower Does An Oldsmobile 455 Big Block Have? The 455 Big Block offered with the Oldsmobile 442 muscle car offered from 310 to 400 horsepower and had a strong torque boost of 500 pounds.Mar 11, 2022
Is a Pontiac 455 a good engine?
Despite only two years in production run, the 455 H.O. is regarded by many Poncho experts as the most versatile street engine Pontiac ever produced. Gobs of low-rpm torque make it quite responsive in normal driving conditions, and it can instantly turn tires into a smoky haze by standing on the throttle.Apr 20, 2018
What years did Pontiac make the 455 engine?
General Motors produced the Pontiac 455-cubic-inch V-8 engine from 1970 through 1976. The 455 wielded massive horsepower, but a new horsepower rating system and tighter emission controls drove the 455's power lower each year until GM abandoned the engine in 1976.
Is a 455 Pontiac a big block?
Pontiac, Oldsmobile, and Buick each offered 455 cubic inch big block V8 engines in its muscle cars and full size models, but these engines didn't share any attributes other than their displacement.Jul 15, 2021
What Pontiac cars had the 455?
Of the three 455 cubic inch V8 engines offered by General Motors in 1970, the Pontiac 455 took the most unusual route to the market.May 20, 2021
What was the most powerful Pontiac engine?
428 HO. This engine was first offered in 1967 as the top engine option in full-size Pontiacs. It was rated at 376 bhp in 1967 and 390 bhp in 1968 and 1969.
How much torque does a 455 olds have?
As a result, the W-30 455 was rated at 350-hp gross and 300-hp net and torque was 460-lb. ft. gross and 410-lb.
What cars had 455 rockets?
Oldsmobile's 455 was produced from 1968 to 1976 as the Rocket 455. It featured a 4.126-inch bore and 4.25-inch stroke. Oldsmobile had cheated the 400-cubic-inch GM ban in 1968-1969 by offering it as an underpublicized Hurst/Olds option on the 4-4-2 models.
How much does old 455 weigh?
How Much Does A 455 Olds Weigh? The Olds 350 is about 560 lbs, and the 455 are about 620 lbs each.Feb 15, 2022
What year did the Camaro SS come out with a 396 block?
As a side note since you are a chevy guy think about this. Starting in 1970 a guy could get an F body Chevy Camaro SS with a 396 big block, but only in 70 and only a 396. However Pontiac offered a 455 in a Trans Am from 70 all the way through the 70s, but chevy NEVER offered a 454 camaro at any point, Ever.
Is a Pontiac the cheapest car?
As a ballpark the Pontiac is the cheapest of the three due to sheer volume and parts interchangablity. There are more good aftermarket parts for the Buick than olds, although yea, they can be costly. Good factory olds stuff like big valve heads and forged cranks are brutally expensive because they didn’t make that many.
Chevrolet 454 LS6 Big Block Engine
First, they have a classic 454 LS6 Big Block Chevy engine. This was a GM Performance Motor purchased in the mid-80s to power a classic 1957 GMC Truck.
Oldsmobile 455 Big Block Engine
Second, they ran an in-house built 455 Oldsmobile that will be powering Rich’s own ’65 Oldsmobile F-85. The factory crank and rods were checked and reconditioned then topped with a set of SpeedPro pistons, and an out of the box set of Speedmaster heads.
Pontiac 455 Big Block Engine
Third, came the Pontiac 455, mated to a set of 6X cast iron heads. This motor came out of Lucore’s own 1970 Pontiac LeMans and actually performed pretty respectably when tested.
Mopar 451 Stroker Engine
Finally, they have tossed a freshly built 451 Stroker Mopar on the dyno that will be the new heart for 73ChargerChic’s 1974 Dodge Charger known as “Momma’s Mopar”. It’s built out of a 1977 Dodge 400 block with the rotating assembly out of an early 70s 440.
What type of headers did the 1972 455 use?
The 455 SD used round-port cylinder-heads similar to those used on the 1971 and 1972 455 HO, with specific "LS2" intake and cast-iron exhaust header-manifolds. Still, it was the strongest American engine offered that year.
Was the SD-455 approved for production?
Without that it's highly unlikely that the SD-455 would have been approved for production. The SD-455 was the last of the true muscle cars. They were genuine 13 second cars when other so called '73 and '74 cars were struggling to manage 15 seconds in the 1/4 mile.
Is a 455 a new engine?
Pontiac used a revision of it's standard 455 emissions rather than classify it as a brand-new engine. Since the standard 455's were already emissions certified, it allowed Pontiac to skip the certification process required of all new engine's.
Is the 455 a grunt monster?
All of the 455's are grunt monsters. Take a look at the old published data for hp/tq and see if one looks better to you. Caution!!! do not compare 71 and earlier numbers with 72 and newer.
Can you use an oil filter relocation kit on a Buick 455?
Yes, but you can use an oil filter relocation kit, and that might solve your problem, or make it worse! The Buick 455 makes good power on it's own, the 73-74 blocks are supposed to be the best! Pair that with 70-71 heads, you have a potent powerhouse.
Guest
I'm searching salvage yards for a Buick 455. How can I tell they aren't trying to push an Olds or Pontiac 455 instead? <BR>
grisby
One of the easiest and quickest ways to tell ( at least for me) is that the Buick 455's have the distributor in the front, and the valve covers have 5 hold downs. 3 on top on the intake side and 2 on the bottom on the exhaust manifold side.<BR>hope this helps<BR>bill g
Guest
1. buick and caddy have front distributor. all other gms have rear.<P>you can tell the caddy, cause all the spark plugs are pointing slightly toward the front of the car. buick plugs alternate pointing front and rear. caddies also have a shorter distributor cap.<P>2. the buick 350 is basically identical to the 455 on the outside.
Guest
What would you like to know about it, just the year? Yes, the engines of those years were painted as you described. <P>I replied cause kitn0 is unregistered and may not show back up for a while. <P>------------------<BR>George C. Thomas<BR>70 GS 455 12.teens<BR>86 GN Low 13's/ high 12's
Guest
you seen to know a lot about 455's, i have an<BR>engine that i think is a 75 or 76, the code is SO i think, and it was originally painted<BR>a greenish color, can you help me
Guest
just wanted to augment something that someone said... Many caddys have forward pointing plugs on both sides, but the 5200 family (identifyable by the casting number engine in "5200") which includes 500, 472, and 390-something, have mirror-image heads.
camsbuick
i have several 455's want to build one for my 59'buick ,which is the better motor buick or olds, the years range from 70-74
How tall is a Pontiac engine?
Pontiac engines all have the same basic architecture, with common 4.620″ bore centers and a 10.24″ deck height, with the exception of the 265, 301, 303, and 366, which had 9.137″ deck heights. The latter two were made for SCCA Trans Am and NASCAR racing in very small numbers.
What is a 454?
The Chevrolet 454 was a derivative of the rat motor series available in these sizes some where used only in trucks, 366, 396, 402, No Pontiac first designed their v-8 engine in 1955 it was 287 cubic inches and the 455 is basically the same motor with larger bore and stroke.
How big is a LS engine?
The LS engine, now made in sizes up to 427 cubic inches has replaced all the big block engines in light trucks and cars mostly due to the fuel economy. However the Big Block chev sells lots of crate motors and their equivalent to Ford F-450 and larger trucks still use the big blocks as well as many racing boats.
Is the 455 a GM engine?
No. The Pontiac 455 is a totally unrelated engine, built by Pontiac as a proprietary design, as were Buick's 455 and Oldsmobile's 455. They have nothing in common other than having been designed and built by GM divisions when they still each had their own engine programs. The Chevrolet 454 was the largest of the Mk.
Is the 454 a rat motor?
He sure has some Mojo. The Chevrolet 454 was a derivative of the rat motor series available in these sizes some where used only in trucks, 366, 396, 402, 427, 454, 472, 498, 502, 572, 600 cubic inch and a few others. I think there are three or four series of the big block chev engine and these are still made today.
Is a 455 the same as a 454?
The 454 and 455 were the same in that they were both V8, pushrod engines. Other than that, not too many parts will interchange, if any. To muddy the waters a bit more, Olds and Pontiac also ran 455 engines, but the only thing they have in common with the Buick, or each other, for that matter, is their displacement.
Do you need a 455 crank for a 400?
In fact you don’t even have to use a 455. By using an aftermarket “stroker” crank available for the 3.000″ main 400, it’s now very common to build 400’s out to 461 cubic inches and more. I know because that’s ex. Continue Reading. Correction: As it turns out the 455 was available in 1975.