91z28TPI

will the ZZ4 camshaft work with TPI? i bought my camshaft off of ebay and the guy told me it would work with TPI. but i read something from GM that camshaft wont work with computer controlled cars?

whats are the facts on the street?

jbbiggs

From what I undersatand the zz4 cam is a graet match with the TPI engine.

91z28TPI

thanks for your input, i have also heard the same but i would to verify first hand before i continue with the combination.

i would also like to hear from people who have done the combination and thier results?

Shaun 90 Iroc

yup, works really well.. i got it in my setup right now

91z28TPI

what mods do you have on your camaro? did you have to mod the EPROM?

L98IROCZ89

Works great!

Captain C

I'm running that cam as well in my 350 equipped 85 IROC-Z. Works well with the stock 85 Vette chip. A custom chip is needed for ultimate HP. You might need one just to run since you are running MAP instead of MAF. I'm not a MAP expert by any means. I just know they are way touchier than the MAF when it comes to cams...

To take "full" benefit of the cam you will need better than stock heads. Something that flows along the lines of 240 CFM intake and 185 CFM exhaust. You will also need headers and an aftermarket intake/runner setup. Also a 52MM TB will help and put in some 28 lbhr injectors.

I have everything listed (but the larger injectors) and yesterday the engine pulled to 6K with power. Usually it tails off at 5500 but I replaced the MAF and that seems to have awakened the beast. I'm only running 10* of timing right now as well. It really likes 16* the best at the track....

You will want at least 3.42's with an automatic, and a 2500 stall converter minimum if you run the big heads/induction system. If you plan on running the stock heads/induction you won't need the converter although the headers will still help. The engine should still pull hard to 5k in a 350 with no problem. Then again, I had an aftermarket intake with the stock runners. I've never run the stock intake on the 350.... As far as running it in a 305, you will have to ask someone else.




Duh!!!!! I should have read your specs better, You are running a 350. Everything above is for a 350.....

mrr23

click the blue banner. i have dyno sheets of it in my engine. and the green banner shows it with the HSR.

D's89IROCZ

hay Mrr23 what were you running in thw 1/4 if you don't mind ....with tthe ZZ4 and Edlebrock base , and SLP runners . I didn't see it in your mods and results page ..... just the siameseed base and stock runners



I am running that set up next season with 3.73's ....and I can't wait untill I get 'r running ...

mrr23

i must've forgot that one. 13.68 was with the edelbrock and slp runners with zz4 cam. i forgot to list them. will fix that later.

D's89IROCZ

thanx sounds like a satisfying # for me to get ....instead of a 15.1

Kevin91Z

iTrader: (1)

I went a best of 13.23 @ 107.19 MPH with my previous combo and ZZ4 cam. My dad has gone 13.01 @ 103 with his ZZ4 cam and Vortec heads. Yes it will work fine with the stock prom, but for best results you'll want a custom chip tuned to your combo.

bigals87z28

Im gunna test the ZZ4 in my 305 to see it. Hopefuly this winter break.