Scuncio Chevelle ex-L78

[Too Many Projects]

Originally Posted by TomN

Thanks WILMASBOYL78 - one friend had mentioned the radiator cap leak tester, and I thought about it. But this engine is far from being a really good hp maker. So I've decided to come up with a fresh engine.
This one is a used standard bore 2-bolt main block with some used standard bore L-78 pistons from a different engine in it. That is not the best condition for making power.

Sounds like you got a back yard mutt build. Who knows what heads and cam too.
I agree, build an engine with modern technology and know what you have. The dome on those L78 pistons are antiques in the modern engine world. Most builders want flat or very little dome to achieve a zero deck height. Hydraulic, roller cams can perform better than the old school stuff too. 600 hp on pump gas is not uncommon.