TheZDeWolfe

Alright guys i got a full dsc1 8 rib dual 4.5 intercooler kit for my Z. although its stock bottom end. I was looking into 317 heads for mine. Is Cnc' needed on them heads to make good power????? I just wanna get into the mid 5's!!
I will invest in a alky kit as the spring comes. but just want to know your guys opinion on whether or not them 317 heads flow good as they are or def. need to be reworked to get me to the 5 range!!! any sugestions??

Bob@BruteSpeed

iTrader: (16)

The 317 heads are not going to give you more power unless you get them cnc'd. You would actually lose power with stock 317 heads do to the loss in compression. You might want to consider leaving the heads alone and adding a performance camshaft, as you'll get more power from a camshaft upgrade. Bob

LS1RedZ

iTrader: (19)

Mid 5's?

TheZDeWolfe

Okay so your thinking leave the stock ls1 heads and i plan on doing a cam swap and doing the dual valve spring upgrade also. but you can see mid 500 horsepower outta these ls1 heads??? Thanks for the help.

TheZDeWolfe

Also dont i want to drop compression to run higher boost levels off the procharger or do i got this all wrong?? My plan is to run 8 psi till i get the alky system and start finding a 6.0 block and forging it all. Also i do have a bigger pump and 60 pound injectors big red race valve. also will be going ls6 intake with ported tb soon. to give you a idea what im working with.

LS1RedZ

iTrader: (19)

I thought you were talking about ET wise lol. Heres my sign! haha

TheZDeWolfe

Hahaha oh yeah horsepower ways!! 5's et!!! I wish!!

hatcher1986

iTrader: (4)

I thought the same thing.. I didn't wana break the bad news to him.. Lol. Should make around your HP goals tho.

youngrigo

I made 523rwhp with the stock heads (241) and a 02+LS6 cam on 9psi

TheZDeWolfe

Awesome! That's what I wanted to hear! I just don't wanna invest a lot of money into these heads but maybe I'll just do dual spring kit on them.

Monte4ever

iTrader: (2)

As far as compression, most recommend 9.5 to 10.0. This gives you decent bottom end torque until the blower takes over.

02LS1ram

iTrader: (17)

I made 533whp on a very conservative tune with a P1 headunit. I would look into the brute speed blower cam. Sounds nasty and makes good power!

blue00ZZleeper

iTrader: (5)

I'd leave the heads, run meth and a good cam.

TheZDeWolfe

Okay. Glad you guys cleared that up for me. blue00zzleeper how much boost you run on your old setup with the stock bottom end? i seen them are some pretty impressive numbers! And also ill check into the brute speed cam!

Bob@BruteSpeed

iTrader: (16)

http://shop.brutespeed.com/Comp-Brut...n-Camshaft.htm

Thanks, here is a link to it. I'll bet you'll pick up 60 or so rwhp with this camshaft. Bob

blue00ZZleeper

iTrader: (5)

It was around 10psi with the 317 heads and methanol. 10psi and 17 or 18*. I have the 317's If your interested but honestly I'd run the stock heads if your only looking to run 10psi or less. The larger CC heads just help against detonation. She ran like a champ...I miss driving her lol

TheZDeWolfe

Thanks Bob. I will be buying the whole cam and everything from you when the time comes! Blue00zzleeper sounds like a beast im hoping to work my way into something you had!!

Bob@BruteSpeed

iTrader: (16)

Thanks, I appreciate it! Bob

TheZDeWolfe

Okay but now whats your thought of esp blower cam? Is it the same thing or whats your opinion on that Bob? just bouncing it off ya!

Bob@BruteSpeed

iTrader: (16)

I'm not familiar with an esp blower cam, what are the spec's on it? Thanks. Bob