widopn

I was wanting some opinions on my set up. I have an lq4 with a tsp228r with the stock 317 heads on it. Iv managed a 12.33 @109 with it in my s10. I feel like there is alot more to be gained. I know the low compression sure isn't helping anything so ive been pondering on pulling the 317's and getting them milled or doin some port work on a set of 706 heads I have and sticking them on. I know more compression is a big + but I'm running a 4000 stall, so bottom end isn't much of a concern. I just wanted to get some opinions about the heads and see what is the better route. Any help is greatly appreciated.

widopn

Anybody ?

Fosnot

iTrader: (15)

something you might want to note is the flow numbers on a stock 4.8L head, that an the smaller intake valve (1.89 vs 2.00"). If you port them out and blend the bowl a bit and smooth out the casting you could probably outflow the 243 heads (LS6) despite the smaller valve

widopn

Thanks, what I had in mind was taking the swirl ramp out and blending the bowls on the 706's. I had also considered putting the 2.00 intake valves from the 317s in them. Do you think that would be better suited for a n/a lq4 vs milling the 317s ?

widopn

bump... anybody else have any input on this ? any help is greatly appreciated..

garygnu

I feel it would be cheaper to mill and port the 317 heads.practice porting on the 706 heads.