donsrods
Well-known member
The past few nights I have been assembling the 350 Chevy engine that I have had sitting in the shop for a while. I had my machinist go through it all and do the normal stuff like line boring, decking, honing, etc. I also had the heads done.
Tonight I slipped in the cam and when I went to put the timing set on it had slack in it, even though it is brand new. The reason is, I had the engine line bored and that sometimes changes the distance between the crank and cam, so you need a shorter timing chain to compensate.
I called Summit and ordered a set that is .005 shorter and a set that is .010 shorter.........one of those should work and I will return the one I don't need. I had to do that one time on a 302 Ford I had line bored, so it is a common problem.
Just thought I would pass this along in case someone else ever runs into this. Most companies, like Cloyes, make sets that are shorter just for this reason.
Don
Here is where I am right now on the engine:
And in this picture you can see the slop in the timing chain:
Tonight I slipped in the cam and when I went to put the timing set on it had slack in it, even though it is brand new. The reason is, I had the engine line bored and that sometimes changes the distance between the crank and cam, so you need a shorter timing chain to compensate.
I called Summit and ordered a set that is .005 shorter and a set that is .010 shorter.........one of those should work and I will return the one I don't need. I had to do that one time on a 302 Ford I had line bored, so it is a common problem.
Just thought I would pass this along in case someone else ever runs into this. Most companies, like Cloyes, make sets that are shorter just for this reason.
Don
Here is where I am right now on the engine:
And in this picture you can see the slop in the timing chain: