ms4z28

im doing a forged bottom end lq4 in my 98 z28 with a t76, 233/239 114 ,and a 4l60e does anybody have any suggestion on the the best set of heads i should use? i will be methenol injected and i plan on boosting about 14 pounds.

hellbents10

iTrader: (10)

Depends on your piston choice, also what kind of power you want to make. Not the number on the boost gauge.

trans2000am

iTrader: (49)

if your on a budget 317's are ur best bet seen ppl put 700+ down on stock ones...if your not on a budget then like etp's or all pro's

pozesd99'

iTrader: (3)

how about the afr 225cc's thats what im running on my 402

ms4z28

yeah im tryin to make around 700

RAGENZ28

iTrader: (5)

I like the AFR's

trans2000am

iTrader: (49)

ok if i was you then id do some 317's and save some money and throw that towards a trans cause that 4l60e isnt gonna last.

Josh@KY-Turbo

iTrader: (120)

I did stock 317's on my last 8.5:1 370ci. Made over 770rwhp at 15lbs of boost with a TC76.

The new shop car is getting a 9.8:1 370 with stock 317's. Shooting for over 775rwhp. Bigger turbo this time around.

HUNTER02SS

iTrader: (24)

Ona budget, use some 317's as stated and then buy a good rear end. The 4l60e if it is upgraded should hold you at the 700rwhp mark. That seem to be about the limit. You shouldn't break hard parts in the tranny,it's just that the clutches will not hold, from my experience with them. If you want to keep the overdrive, then you can buy a basicly stock 4L80e and you will be fine.

ms4z28

yeah thanks i think im goin to run 317's and i have a built 4l60e that is supposed to handle 850 but we'll see

HUNTER02SS

iTrader: (24)

If this tranny was in a vette, then I would say ok, but in a f-body, due to the weight they just don't handle the power. Mine lasted over 800rwhp on the dyno, but then turned it down for the street use, and that was around the 750rwhp mark.

ms4z28

i actually got a deal on some L92's and if the trans doesnt hold i might do a th350 or 4l80