what top end pkg for a 383 ls1
#3
TECH Senior Member
iTrader: (8)
425 is easy on 383. I almost make that on 346ci stock bottom. Raise the bar. I have a friend making 47x and running upper 10's with TSP 5'3's, unported Fast 90/90, and MS4. Don't know for sure but think he is milled to 59cc and pistons have 4cc valve relief. I'll ask tomorrow