Comp 224 cam - noises - pushrod length question
Thread Starter
Teching In
Joined: Sep 2003
Posts: 30
Likes: 0
From: DFW
Comp 224 cam - noises - pushrod length question I have stock heads with a Comp Cam 224/224 .581 .581 112lsa cam and 918 springs. Push rods are Comp 7.4s hardened. Oil pressure is good, yet I get a fairly loud clacking sound that comes and goes. Usually comes when driven under slight load, partial throttle, at cruise. The sound is definitly sourced on one side only. This motor was unknown to me as it was bought with 35k on it and I put the cam in before ever running it.
I thought for sure this was a lifter issue. So I pulled the heads, installed new Comp replacement lifters, checked the valves, found no other issues, and put it back together. Started up and within a minute the car sounded great. Took it for a drive and the sound has returned!
The local speed shop has suggested to put in 7.35 push rods. I'm no expert, but it seems to me the 7.4s should be fine. I'm going to try it and check the results, but wanted to get some opinions.
Are there any negatives and is this sound advice? It seems like a good move to me and I can't really see where this might be a problem.
Thanks
I thought for sure this was a lifter issue. So I pulled the heads, installed new Comp replacement lifters, checked the valves, found no other issues, and put it back together. Started up and within a minute the car sounded great. Took it for a drive and the sound has returned!
The local speed shop has suggested to put in 7.35 push rods. I'm no expert, but it seems to me the 7.4s should be fine. I'm going to try it and check the results, but wanted to get some opinions.
Are there any negatives and is this sound advice? It seems like a good move to me and I can't really see where this might be a problem.
Thanks
