RocketCutlass

FIRST, i'm slowly getting together what i want to put in my motor. got a Yank SS4000 on the way to replace my broke TCI. going to order a t-rex cam, wondering about which AFR heads to get, i've been told to go with the 205's and thats what i was wondering about which heads to go with that cam, and what are the odds of having a PTV clearance issue with those heads and that cam? SECOND, obviously the t-rex cam is a mid to upper range cam and i was curious what can i do to safely rev the motor up around 7k? i just heard about comp cams rpm kit and what is that kit have in it that lets the motor rev higher? and just out of curiosity how high can a stock LS1 rev?

RocketCutlass

oh i forgot, recommendations on valve springs?

STL2SLO

iTrader: (1)

You are gonna have to have some dual springs.. I would suggest the Comp 921s. As far as which AFRs to get, I dont know. Others will chime in though..

RocketCutlass

yeah i hope so cause i swear everyone around here is tellin me different things and i am undecided

Steve Burger

iTrader: (33)

AFR 205s are fine. Make sure the springs will hold that cam. Not sure what AFR uses. PTV could be an issue if the heads are milled. Check it before you fire the motor. The rolled valve angle heads will give you a bit more clearance. (ETP TFS). IF it is a stock bottom end change the rod bolts to the Katech ones at least.

The bigger issue will be a 4000 stall is not enough for that cam. Trust me I know.It will be OK but marginal at best.

RocketCutlass

i'm going to buy all new parts, dont really want to mill the heads, what heads would you suggest for best ptv clearance, i want the most power obviously but i'm doing this in my driveway and dont want to have to machine or fly cut

STL2SLO

iTrader: (1)

If you arent totally stuck on the AFRs, you might wanna check on the TSP PRC LS6 heads. I dont know if they will clear that big stick or not, but they seem like an excellent budget head.

N4cer

iTrader: (11)

I'm sure AFRs will clear. And yes, they're expensive but they're great heads. I would just call AFR or PM Tony Mamo and ask which AFR intake runners you need.

Steve Burger

iTrader: (33)

Again, ETP or TFS will give you a bit of clearance based on the rolled valve angle. The stock angle is 15 Deg. TFS is 13.5 and ETP is 11.

RocketCutlass

yeah im not stuck on the afr's but a lot of people swear by them, i just wanna get the best bang for the buck really