Im getting a hotcam kit and im wondering... Do i need to get a whole new factory timing set or just the timing chain? The car is a '94 Z so it does not have the vented opti and it has 33k mi. on it all original. Thanks

 

Get the whole high performance timing chain set from gmpp. That's what I did when I put in my hotcam. If you're gonna tear it down, do the whole thing don't half a-- it. JMHO.

 

I replaced mine too, with the cam change. Only had 28k on it, but what the heck. I used the stock replacement gears and chain. Replace all of it or none, don't mix and match.

 

I would throw in a new factory timing set for insurance. Keep the other as a spare.

 

At 33K you shouldn't need one, but your are there and have to take off the chain anyway - a new wouldn't hurt.

FYI - the GMPP chain kit is noisier than the stock - just so you know.

 

Mine looked just fine even at 90K, but I changed it anyway because of the mileage, and "I was already there".

Do what you want, but I think at 33k your set will be just fine if you don't. I probably wouldn't change it.

 

If my memory serves me correctly, if you do the LT4 chain that i think they are talking about you have to convert to the newer timing cover and vented style opti with the cam witht he longer dowel pin. I could be wrong.

 

^im pretty sure thats correct. the LT4 chain can only be used on the vented style opti's. a stock replacement should be fine

 

They are right, if you want to upgrade the timing set, you'll also need to convert the timing cover, etc. When I did mine around 80K miles, everything looked good, but I still put a new set, gears and chain. Do not replace the chain or gears only. Its cheap insurance and now is the time to do it since your there already.

Aaron

 

Yeah im not upgrading my opti or any of that. Thats why i was sure to post that it was a non vented. Thanks for the help guys ima go find the p/n for the factory timing set. Not just the chain... Sucks cause the chain is only like $30 Better safe than sorry though

 

'93 - '97 Timing chain: 10128485
'93 - '97 Crank Sprocket: 10128346
'93 - '94 Cam Sprocket: 10128349

 

Right on man thanks!