383lt1impala

iTrader: (33)

i would like to know if there are any other people out there with a lt1 that has a bigger than 350 ci but with stock unported heads like my set up. i have a "383" with stock cast heads just with z28 springs. so if there are any others out there post if u feel a differance in performance did u gain any hp or tq etc. and thanks in advance

383lt1impala

iTrader: (33)

or does any one know some one who has this setup thats not on the forum

9formula4

iTrader: (5)

your 383 IS NOT performing to even half its potential. you are not allowing that motor to "breathe" with those heads.

kinglt-1

iTrader: (26)

yea you should of ported those stockers w/ valve job.