Title: Message
I've been through some of this myself.  It is really easy to pop off the valve covers and test a few things.  If there is a bent pushrod, it will be obvious.  If your engine has cork valve cover gaskets, it should be a really easy time to remove and replace the covers.  If not, then you have to budget some time for cleaning the old goop off and a new cork gasket.
 
My bet is that you will have a loose rocker.  If something is bent, you will not be able to tighten it enough to correctly adjust the valve.  You can then loosen it and pull the pushrod to check it out.  If the pushrod is good, then you know it has to be the valve (or a really rare problem with the rocker or stud).  If you have the time and want to learn, you can pull the heads and have them worked on, or buy a set of aftermarket heads and do the swap. 
 
It is not too bad a job, mostly wrenching.  You will need a torque wrench to do this, but nothing else specialized. The heads are heavy but manageable. If you want to do the head swap, you remove the intake, then the heads.  Installation is the reverse.  The hardest part is getting the intake to seal well at the front and rear of the block...

Brad Waller     ([EMAIL PROTECTED])
'66 Corvette | 327/dead | 4-speed   | Wilwood Brakes | 245/45/16 BFGs
'67 Chevelle | ex-SS396 | 355/700R4 | '79 F-Body Brakes

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED]
Sent: Friday, June 27, 2003 8:34 AM
To: [EMAIL PROTECTED]
Subject: Re: [Chevelle-List] Where 2 Buy an Engine??

  Thanks Tom... I'll check on that ZZ4 crate motor... I wish I knew what the difference between what a valve, lifter, and pushrod was :) ... I'm gonna check my Haynes and see if I can figure it out. Jim told me that by putting my notches on the timing sprockets together that I set the timing to the 6 cyl or 180 degrees out of timing. I tried to set the timing correct and turn the distributor 180 degrees.. it would even start then. So no matter what it spurts gas out the carb like the engines going... turn, turn, turn, spurt... turn, turn, turn, spurt... I'll look into those pushrods.
  Thanx again,
       Charles

C. Campbell - Detroit, MI.
'70 Chevelle Malibu 4 dr., 307
Detroit Chevelle Club
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