What is the difference between the factory 454 ss motor and the aftermarket 454's...i know that one rates in at i think over 400 hp and the factory one that came in the 454ss is around 260..sorry if my numbers are off...

 

Better heads on the aftermarket. Cam and intake differences also. Headers are probabbly recomended too. Along with some fuel system upgrades.

 

compression, cam, heads, etc. they aren't really comparable. a 454SS isn't much of a midsize or compact either though...

 

Yeah, I'll agree that this is the but it's not like it's taking up too much space here lol

 

All of theee above. The aftermarket ones don't have all the enviorment friendly crap on the either

 

The factory 454ss engine has an RV cam, crappy intake and peanut port heads.

 

RV cam is a term from the early 90's, like 3/4 cam from the 60's. there is no such thing. the 454 TBI engine just had a small cam. it didn't have any upper rpm power at all.

 

thnx u guys for the replies...yea sorry it was in the wrong forum but i didnt kno which to post in...thnx again