hirdlej

iTrader: (31)

Hi gang,

I'm up to no good again. I got 12,000 miles on my truck so it's time to void that warranty and split the motor apart. My truck is entirely stock other than a wait4me tune and I found a 01 ZO6 cam with valve springs for only $100. I thought it was a good deal considering the comp cam I wanted was $400 So here's a few questions I wanted to fire off to you guys. First of all, by doing a swap to the corvette cam will I need longer or shorter pushrods? The cam has 36,000 miles on it, is this going to be a problem with my stock lifters? Will they "handshake" appropriatly or could I potentially have problems? Another thing is how stiff are the Z06 springs compared to what's already on my 4.8? Is it worth swapping out even? And now finally, last but not least. By going from the stock 4.8 cam to this one, do you guys see where I will run into driveability issues? Will I lose lowend power? Will this cam enhance my current powercurve and just shift it up higher overall? Will this also enhance gas mileage? Also, what about the exhaust note? Right now I have a silverado ss cat back I jimmy rigged up and you can barely hear the engine at speed and just a little burble at idle. Will the cam change that at all as well?? I just don't want to put this cam in and find out that I don't like it because it's too aggressive for the little 294 What is everyone's thoughts?

Much appreciated,


Joe

hirdlej

iTrader: (31)

ne1???

FarmerBeau

iTrader: (2)

My thought is that it will work fine. Im about to go with the 02 Z06 cam and everything will match up. Stock pushrods should be fine. If im not mistaken, i pretty sure that the LS6 springs can handle up to .570 lift which is more than enough for your cam. Your stock springs are gonna be a little weak because they are made for the stock cam which is 191/190 .457/.466 114 lsa so you are going to have a big difference in the lift. If I were you I would definately install the LS6 springs because if you hang a lifter...It will be hell fixing it. These motors have roller lifters rather than flat tappet lifters of the past gen II small blocks, therefore 36,000 miles on a cam is not much and there is little or no wear on them. I switched back in my stock cam and when I had them both out, sitting side by side, they were damn near identical. My stocker had 76,000 miles on it and the Lunati custom grind had like 100 miles on it. As for your power curve, I think your cam is on a 116 lsa and thus will move your power band up in the rpm range. Im not sure if you will lose power down low but you will definately pull harder up top. Your gas mileage might go down a hair, but hell the power is worth the price. There is a guy on here that runs a low 12 with that exact cam. (204/211 .525/.525 116 lsa...right?) The drivability shouldnt change much if not any. Its a good cam for doing just that. It is not aggressive at all so you will like it. There are guys that will run the TR 224 which is on a 112 lsa and they seem to be running just fine. I dont know what kind of exhaust the SS has but you will still feel a power difference and maybe a little sound but nothing anyone will notice. If you set two trucks side by side one with the stock cam and the other with the vette cam, you might be able to pick it out. Nothing to worry about soundwise. Everything should work fine. Here is a website that should help you out. www.LS1Howto.com Good luck with the install.

dug

iTrader: (10)

lol, I had my eye on the same cam. I never researched it but I assumed it was pretty much bolt it in and go. I think the 2001 cams have the same base circle so the stock pushrods should work. Definitly change the springs to the ones with the cam.

I thought the specs were 207 217 525 116. Maybe I am wrong.

Good luck

FarmerBeau

iTrader: (2)

Im not sure. I got those numbers from the How to Build HIPO LS1/LS6 V-8s. BTW this book is a great investment and is very helpful with all the nitpicky details and such. There is even a 1200hp motor build in it which is pretty cool. It seems that cam numbers will fluctuate from time to time. The one you might be thinkin of is the 02 Z06 cam which is 204/218 .550/.551 117.5 lsa. Screw it, I Dunno.

ls1ow

iTrader: (1)

ok guys heres my story, i had a 99 TA and did a 02+ ls6 cam and springs and yes there is a diffrence between, the 01 springs and 02+ dont run a 02 cam with 01 springs they dont hold enough pressure! honestly if you compared the 01 cam to the 02 its really worth it to find a the 02 in a LS1 they have seen as much as 20rwhp diffrence between the cams, i plan on running another 02+ in my new 4.8 here in the next few months, the 02 cam is great its completly stealthy and sounds just like stock but you can see gains of 35 to 45 Rwhp, my 99ta with that cam with just bolt ons, made 381 rwhp not too shaby if you ask me. hope this info helps, good luck with it keep us up to date on what kinda of power it makes.

FarmerBeau

iTrader: (2)

Definately use the 02 springs. I didnt know that the springs are different. I heard the 02 Z06 cam in a buddys WS6 and it sounded bone stock and he was running 11 second runs.

4.8shorty

So LSA will decide where your power range is in your RPM band?
I'm guessing low LSA=high RPM power, and High LSA=low RPM power?

FarmerBeau

iTrader: (2)

Not really. Actually i think its the opposite. The higher the number (116) the higher rpm range it will pull hardest at. The lower (112) the lower rpm the power band will start up and pull at.

4.8shorty

So those Z06 cams' power band must be through the roof!