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Re: 326 Engine/Mr. PBody
Tim81ta,
You're confusing the Pontiac 326 and 350 with the Chevy 327 and 350. The Pontiac engine shares nothing with the Chevy. These are questions regarding early Pontiacs, when Pontiacs DID NOT have Chevy engines in them ('79 and older). Don't feel too bad. You're not the first to confuse them....
Chevy 327 is a 4" bore, 3.25" stroke, and the 350 is 4" bore, 3.48" stroke. The Pontiac 326 is 3.8188" bore and 3.75" stroke, and 350 is 3.875" bore and 3.85" stroke.
Also be careful comparing 400 Pontiac with 400 Chevy (small block). While the bore and stroke are very similar, that's where the similarity ends. Nothing interchanges. The Chevy block is inherrently weak (stretched too far for the original dimensions, unlike the 350). It takes considerable work to get it up to performance levels. The Pontiac is a good one, right from the start. Until you get past the 600 horsepower line, the Pontiac has an "edge", expecially in a street car, due to the low-end torque production of the Pontiac design.
Get Jim Hand's book "How to Build Max-performance Pontiac V8s" for an in-depth, current view of the Pontiac.
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