Here's my deal. I've got a 440 in my coronet with a .528 solid lifter camshaft. I ran it with iron heads for years and lashed it just a little tighter than specs. It made a little noise but no big deal. Then I put on a set of cnc'd Stealth heads. Now when the motor gets hot, it rattles like a bb in a beer can. I know that the aluminium heads swell when they get hot and I always lash hot. But here's my question; can I run .018 on the intake and .022 on the exhaust and not wipe out the cam?? Thanks.
