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my67c20 · 05-16-2011, 08:43 AM

Had the same problem. What i found was that the piece of #%$^ chrome holdown was snug up against teh manifold and had just enough pressure to make me think it was locking down the distributor. With the engine off see if you can rotate the distributor. Went back to the stock holdown problem gone.

05-16-2011, 08:43 AM	#12
my67c20 Registered User Join Date: Jun 2002 Location: Tucson AZ by way of WI & CA Posts: 507	Re: 72 Jimmy w/HEI Wont Stay Timed! Had the same problem. What i found was that the piece of #%$^ chrome holdown was snug up against teh manifold and had just enough pressure to make me think it was locking down the distributor. With the engine off see if you can rotate the distributor. Went back to the stock holdown problem gone.