Did Pontiac Make A 455 Big Block?

Did Pontiac Make A 455 Big Block?. I was talking to someone with a pontiac that said he had a 455 big block. Engine block and cylinder heads were cast at saginaw metal casting operations then assembled at tonawanda engine before delivery to.

NO RESERVE 1977 PONTIAC GRAND PRIX 455 BIG BLOCK The Electric Garage from bid.theelectricgarage.com

The big / small block thing was a chevy item. This motor came out of lucore’s own 1970 pontiac lemans and actually performed pretty respectably when tested. Pontiac 455 big block engine.

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Buick and oldsmobile 455s were big blocks, but a pontiac 455 was not. A chevrolet 348 was a big block, but a chevrolet 350 was a small block.

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That’s right, the 455 was not a big block because pontiac never had a. The biggest news that year, however, was pontiac’s newest performance engine, the super duty 455.

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Again, camshaft specs (.475/475 lift) nudged the big block's. A chevrolet camaro 396 had a big block, but a pontiac firebird 400 did not.

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Can someone verify if pontiac had different blocks? There were short and tall deck versions, and small and large journal versions, but the basic block and architecture was the same for all pontiac v8’s from 1955 on.

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Again, camshaft specs (.475/475 lift) nudged the big block's. Can someone verify if pontiac had different blocks?

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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 455 didn’t come out until 1970, and this car does not have a “big block”.

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The 455 powered the pontiac gto and firebird. The pontiac v8 engine is a family of overhead valve 90° v8 engines manufactured by the pontiac division of general motors corporation between 1955 and 1981.

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The 455 didn’t come out until 1970, and this car does not have a “big block”. They used the ho moniker to counteract the perception of lost performance.

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For the 455, pontiac expanded the cylinder bore to 4.152 inches and the stroke to 4.21 inches. Again, camshaft specs (.475/475 lift) nudged the big block's.

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I thought that all pontiac 8’s used the same block. A chevrolet camaro 396 had a big block, but a pontiac firebird 400 did not.

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The 455 didn’t come out until 1970, and this car does not have a “big block”. What about that pontiac 455 not being a big block?

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Firebird engine production at pontiac’s plant 9 appears to have continued though. The 455 didn’t come out until 1970, and this car does not have a “big block”.

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The latter two were made for scca trans am and nascar racing in very small numbers. Again, camshaft specs (.475/475 lift) nudged the big block's.

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To accompany the freshly rebuilt heads we ran the factory crankshaft, eagle forged rods, and srp forged pistons. The latter two were made for scca trans am and nascar racing in very small numbers.

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Pontiac only had one v8 block. Again, camshaft specs (.475/475 lift) nudged the big block's.

I Was Talking To Someone With A Pontiac That Said He Had A 455 Big Block.

Engine block and cylinder heads were cast at saginaw metal casting operations then assembled at tonawanda engine before delivery to. This motor came out of lucore’s own 1970 pontiac lemans and actually performed pretty respectably when tested. The 455 powered the pontiac gto and firebird.

I’m Talking About To Late 60’S Early 70’S Timeframe

Engineers did their best to squeeze out as much horsepower as they could. The latter two were made for scca trans am and nascar racing in very small numbers. Can someone verify if pontiac had different blocks?

In 1970 Pontiac Increased The Displacement In An Attempt To Make Up For Reduced Compression Required By New Government Regulations.

While both pontiac and oldsmobile would also introduce 455 v8s in the same period, each design was unique. Trw (pn l2359) forged flat. They used the ho moniker to counteract the perception of lost performance.

Again, Camshaft Specs (.475/475 Lift) Nudged The Big Block's.

At first glance this didn't transcend the 370hp on offer by the ram air iv version of the 400 v8 available in the gto that same year, or even pontiac's 366 horsepower ram air iii 400 motor. Cars and equipment laid in state on the assembly line while negotiators fought to reach an agreement. That’s right, the 455 was not a big block because pontiac never had a.

Buick And Oldsmobile 455S Were Big Blocks, But A Pontiac 455 Was Not.

The pontiac v8 engine is a family of overhead valve 90° v8 engines manufactured by the pontiac division of general motors corporation between 1955 and 1981. Although it reported 20 less horsepower than the hurst/olds, it featured forged connecting rods, aluminum pistons, and a balanced rotating assembly. 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.