NewOrleansLT1

I'm about to do a cam swap and I was wondering if I can replace just the timing chain and reuse the old sprokets. The motor has about 50,000 miles on it. This is the chain I was intrested in http://www.jegs.com/i/Cloyes/220/9-193/10002/-1 can it be done?

Alex94TAGT

That looks like a roller chain. The factory GM timing set utilizes a stiff-back / link-belt design. In other words, I doubt that specific chain would work without the accompanying roller-style timing gears. And the accompanying timing gears won't likely work with a 1994 Optispark.

I'd just get the stock GM chain replacement if the stock gears look okay. The factory chain has a tendancy to stretch, but 50,000 miles isn't excessive -- might check how much play it has even before ordering a replacement.

Otherwise, if you're looking to upgrade, it looks like you already have an electric waterpump -- so, you don't have to worry about losing the waterpump drive teeth on the back of the stock cam gear, which frees up your options. You could swap to a 1995+ optispark and timing cover, then run the cloyes 9-3145 double-roller. That's what I've been running for years. Some grinding of the timing cover is required for the double roller to fit.

Rob94hawk

iTrader: (1)

Ed Wright recommended a Rollmaster timing set for my rebuild. SDCS1090, nitraded, double roller. Light as hell, good up to 1000 hp. This is if you're going to swap in a 95 vented opti. Don't know what your $$ is but just a recommendation. In the pic it's the one on the left. Best of luck.

bowtienut

iTrader: (1)

If anything, you should replace the crank sprocket. It wears as much as, or more than, the chain.
Get a Cloyes S505 oversized crank sprocket to take the slack out of the stock setup. And use either a stock chain or the Cloyes C506 chain. It's not necessary to replace the cam sprocket at 50k miles, unless you see some damage to it.

BOLO

iTrader: (40)

^^Do that^^ Or if you're going to a vented opti and running an ewp, just get the Cloyes 9-3157 timing set. You will also need a 95 timing cover(big hole in the middle).GL

NewOrleansLT1

What do you guys think about this one http://www.jegs.com/i/Lunati/638/93094/10002/-1 ?