GregWS6&z28

iTrader: (8)

I need some suggestions on cams to match my setup… I currently have a 99 Z28 (65K on engine) with Stage 2 ported heads. 2.02/1.60 Stainless valves with 65cc combustion chambers. There’s currently Comp 941 springs (.600) with about 20K miles on them. The heads are very slightly milled. I have a built A4 trans with a 3800 stall and 3.42 rear. I’d like to make power from 2500 to about 6700-6800rpms and have about +50rwhp.

Here’s my heads flowsheet.


I’ve been looking at the TSP Torquer2, F14, MS3, 231/237, 233/239. It doesn’t need to be too radical and rev the hell out of my motor. I'd like a 113 LSA

Other upgrades…
-what would be the best springs? PRC duals? Would my 941’s be sufficient for a cam in the .595 lift range?
-Do I need to do an LS6 oil pump?
-Ls2 timing chain
- TSPChromemoly pushrods

Thanks for the help and suggestions guys!

PREDATOR-Z

A 232/234 .595/.598 113 will fit nicely with stock gasket. PRC dual spring kit will fit bill nicely.
However, what type of valves do you have? and how much is the mill?
Are those LS1 heads? they seem low on flow.

GregWS6&z28

iTrader: (8)

so not a good idea to keep on using the 941's heh? The valves are aftermarket "Stainless Valves" which were put on by Agostino racing way back in the day for my friend I bought the heads from (Mightymouse). I'm not sure on the brand though. Yes, they are LS1 heads, 98 casting, maybe 853's. not sure because that was ground off the head corner when ported. He told me they were milled very slightly to fix something. i'm not sure and will have to ask him about that. So the Torquer is looking like a viable option. any more ideas???
Thanks for your help Predator

GregWS6&z28

iTrader: (8)

little more info.....
will be purchasing a new torquer v2 (232/234 .595/.598-113 from a friend and I am trying to figure out what springs and pushrods I will be able to run. It may be difficult to figure out. here's my setup. I currently have.....

Agostino Racing Stage 2 Ported 1998 heads with 2.02/1.60 valves, 65 cc chambers, COMP 941 springs and titanium retainers. The heads have been cleaned up a few times but never "milled". I'm using stock GM 6.0L gaskets i believe. My friend I bought the heads from claims they were probably cleaned 0.01" 2 or 3 times. I'm running stock pushrods now on a stock 1999 cam. I know the torquer has a smaller basecircle and have read online that some use 7.425" pushrods just fine. Here is what he told me about my spring selection...... "you have to be careful on the spring selection because those heads are set up with small block (gen 1) springs and valves. for instance the comp 921's i wanted would not fit without rebuilding the heads with new guides and valves, seats locks and retianers.. so i just bought new heads"

I was looking at the PRC duals but I have no idea on their diameter or install height issues. is there a spring I can get that will work with the high lift of the Torquer 2? Is there a spring retainer that i can use to work with a GEN 1 valve?


pic of heads:


^ fullzise http://www.fastrides.com/photos/z-ra.../original.aspx




Thanks for any help guys