I am in the process of installing a Cloyes dual roller timing chain. I noticed the clearance between the cam thrust plate bolts and the sprocket is very close. Do I need to grind the bolt heads some or replace them, or will it clear OK. I don't want to put it all together to find out it is going to rub. I want to put this together today to have the car for the weekend.
This install is on my GTA's 305. Any help is greatly appreciated.
Thanks,
Ozzy

 

I wasn't aware that Cloyes made a dual roller for roller cam motors. Make sure you have the right chain set, you may have one for a non roller cam.

 

Jegs catalog:
PN: 220-9-3145.....SB-Chevy With Factory Roller Cam 87-90...$79.99
The parts I got checked OK too.

Anyways, to check the clearance I put some antiseize on the thrust plate bolts and installed the sprocket. The antiseize did not contact the sprocket, which means there is enough clearance. I had a hard time putting the crankshaft sprocket in though(very tight). I verified the allignment on the sprockets and just getting ready to finish the job.
Thanks anyways,
Ozzy

 

Make absolutly shure that you have the crank sproket all the way up on the crank this can cause a bind in the chain and make the cam sproket not go all the way on there. You shouldn't have to grind anything to put that timing chain on your car

 

Thanks Poncho, I didn't grind anything and there was enough clearance behind the sprocket. It just looked like it was going to be very close and wanted to get a second opinion.
As far as the crank sprocket install, I bolted the cam sprocked without the chain and then started pushing the crank sprocket in. With the sprocket going in, I used a metal straight edge to make sure both sprockets were aligned. I had used a mark to indicate when the sprocket was very close to the end.
The new chain fits nice and tight. The old one had so much slack that it would move as much as 3/8". I guess you can expect that after 100K miles.