[HWYSTR455]

Originally Posted by pastry_chef

What is the highest N/A HP per cube Pontiac V8?

Factory? 470hp I believe. 70 GTO/GP 455? Just going off Wallace head chart:

http://www.wallaceracing.com/head1.htm

Strokers? you can fall off a log and make over 500. Most range in the 550-620 range depending on how it's cammed, etc.

GM plays with the numbers on the LS engine. For example, usually, in-car numbers are rear wheel, flywheel for 'crate' engines.

As for 'performance' LS crate engines, I don't think the GMPs are really that 'performance' oriented. People like MAST are more like actual, true performance engines. Costs?

https://www.mastmotorsports.com/collections/ls-engines

Keep in mind that is for engines only. No electronics, no supports systems or transmissions, like the GMP 'Connect & Drive' offerings.

https://www.gmperformancemotor.com/category/CC.html

Just to say, some are having issues with the connect & cruise stuff, first, they are dirty, like all GMP engines are. Personally, I would tear one down and clean them up, inspect, before I put one into service. One friend has a 69 Camaro, he is on his 3rd engine in a fairly short period of time.

FormulaJones - Used, yeah, not many IA2 or MR blocks for sale used, but people keep them until they can't be rebuilt anymore, though not sure how that compares to LSX blocks, not sure of production numbers on any of those, but bet there's not many used LSX blocks out there for the same reasons. There are still making them though. Hard to say.

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