Figured I'd get some input from the knowledgeable people on here.
347 SBF stroker with AFR 165s, custom cam, Pro-systems carb etc. etc. in a Panoz. Trying to help my father nut/bolt the car and it was making more noise than I generally like (I race a Z06 and know LSXs better than anything).
Shortblock was purchase used and completely rebuilt by a very reputable shop. Car ran good this spring but cracked a valvespring at VIR in July. Heads were gone through and freshened up. Then in October it chucked the water pump pulley on track.
The noise really sounds like it's coming from the center of the engine. Initially I thought it was more from the front, but after running it with both VCs off I'm not so sure. I put each piston to TDC and checked the pushrods and rocker arm adjustment and found no indications of a weak or collapsed lifter.
Thoughts? General noise from an aggressvie aftermarket valvetrain? Bottom end issue? It has comp pro magnum rocker arms, comp pushrods, isky guide plates etc. etc.
347 tick - YouTube
Thank You,
Brian
PS - Next up is to start pulling plug wires and seeing if I can isolate the cylinder.
347 SBF stroker with AFR 165s, custom cam, Pro-systems carb etc. etc. in a Panoz. Trying to help my father nut/bolt the car and it was making more noise than I generally like (I race a Z06 and know LSXs better than anything).
Shortblock was purchase used and completely rebuilt by a very reputable shop. Car ran good this spring but cracked a valvespring at VIR in July. Heads were gone through and freshened up. Then in October it chucked the water pump pulley on track.
The noise really sounds like it's coming from the center of the engine. Initially I thought it was more from the front, but after running it with both VCs off I'm not so sure. I put each piston to TDC and checked the pushrods and rocker arm adjustment and found no indications of a weak or collapsed lifter.
Thoughts? General noise from an aggressvie aftermarket valvetrain? Bottom end issue? It has comp pro magnum rocker arms, comp pushrods, isky guide plates etc. etc.
347 tick - YouTube
Thank You,
Brian
PS - Next up is to start pulling plug wires and seeing if I can isolate the cylinder.