do you have correct lenght push rods? please dont say you used 7.4s without a proper measurement of what you actually needed. that right htere could be yoru sole problem with noise.
hahaha. yeah thats what i used. guess I will go and get a correct measurement when I swap the heads.
Last edited by blackout; 12-17-2010 at 04:02 PM.
2003 GMC K1500 ECSB running an Iron 383 Stroker ......