Big_Bird_WS6

iTrader: (7)

on a 1.7 ratio rocker. what is the biggest lift i can do in a LS2 before i need to flycut the pistons?

Thanks
D

speedracer5532

iTrader: (8)

Duration of the lobe is more of a factor than lift. You need to look at both.

Big_Bird_WS6

iTrader: (7)

115 LSA


cam i am running is a 228R ( 228/228 588/588 on 115 LSA) and that is with a 1.7 rocker. if i got to a 1.8 rocker it makes it a 623/623 on the lift.

i hope this helps

gtomama

It's all in the intake valve events, that cam your running has a minus 2.00° of overlap, you should be ok with that cam, my cam has .9.00° of overlap and a .620" of lift on a 112 LSA and no Fly cutting....my husband has the Lindy tool intake and exhaust valve Fly cutter for the L92's big valve and a dummy head laying around in the garage....he used it on his vette, but my Goat runs just fine with out Fly cutting...lol
475whp / 448wtq...and there was a lot more left on the table...but i rather play it safe not worry about being to lean and blowing up a piston...
Good luck on your quest.

Ciao,
gtomama