@mike i appreciate that. Despite what i said earlier, i like the idea of a bigger displacement in these cars because of the history of the impala/ss of the 60s and early 70s. And the kind of legacy they left behind with those bad *** motors that came stock like the 350s, 396s, 454 etc. But im relying on my research to give me the final answer as it pertains to the 90s LT1 and what i can get away with doing to it. Lol.

 

Sounds good but the 454 was not a impala motor but the best motor for a impala was a 427 then the 396 in my thoughts lol am sure your car will move good with whatever choice you go with enjoy