[Chevelle-List] 327 Question

[Rhonda Stalker]

Hi all,   We took your advise on having the 327 heads rebuilt .... good thing to - the original motor has the power pack heads with small combustion chambers and the 350 heads had 76cc combustion chambers.  We would have lost tons of compression.   Anyway - another problem.   My son installed an Edelbrock high prof. cam, high prof valve springs, Edelbrock timing gears and chain, Crane roller rockers, and crane push rods.   He already has an edelbrock manifold and Hei ignition.  We rolled back the crank to 5 degrees before TDC and then dropped the distributor (as edelbrock instructed).    We have set the valve lash 3 times now and dropped in the distributor twice.   the darn thing doesn't seem to time up right.  Lots of power but runs like shit, misses and pings.  Any Ideas???   We've been told the crane rockers and push rods are compatible with the Edelbrock cam but I'm getting a little concerned about the clearance.