78C10BigTen
Full Access Member
- Joined
- Apr 12, 2017
- Posts
- 15,948
- Reaction score
- 25,339
- Location
- pennsylvannia
- First Name
- Ted
- Truck Year
- 1978
- Truck Model
- C10 BIG TEN
- Engine Size
- 350
Ive had that issue before tooAfter the new cam install I started hearing a loud metal to metal clang. I set the truck aside and started pulling the engine apart to find the culprit. The top end moved like it is supposed to with just a little rocker slap. No sticky valves or pushrods, no broken springs so that wasn't the issue. I took the oil pan and timing chain cover off; nothing amiss there. But when I put everything back together the clang was still there.
So last night I'm under the truck staring up into the guts of the engine and can't see any cracked connecting rods, there's no play in the crank and there's oil on my face. I threw a little tantrum and in smacking things I found what was making noise. The torque converter had come loose from the flex plate.
Moral of the story: hit things and you find out what's not right.