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**wcstory** · 07-13-2015, 09:34 PM

Got the rest of the top end assembled.

I pulled the spark plugs out and put marvel mystery oil in the cylinders before turning the engine to install new push rods and set the cold lash to .020.

A little gas in the carb and she fired up. Let her idle as I added the rest of the coolant and tightened leaks.

After she got good and hot I set the lash to .012 on intake and ,018 on exhaust valves. I need to grab a timing light and set the distributor properly. She still spits and sputters under load.

Wondering if I should just drop in the new HEI, kind of wanted to address one issue at a time.

07-13-2015, 09:34 PM	#33
wcstory Registered User Join Date: Jun 2006 Location: Cape Cod, Ma. Posts: 236	Re: #$%@! Bent Push Rods Got the rest of the top end assembled. I pulled the spark plugs out and put marvel mystery oil in the cylinders before turning the engine to install new push rods and set the cold lash to .020. A little gas in the carb and she fired up. Let her idle as I added the rest of the coolant and tightened leaks. After she got good and hot I set the lash to .012 on intake and ,018 on exhaust valves. I need to grab a timing light and set the distributor properly. She still spits and sputters under load. Wondering if I should just drop in the new HEI, kind of wanted to address one issue at a time. Attached Images __________________ 1966 GMC 1 Ton 305 V6 SM420 4 speed - retired Fire Dept Support Truck from Little Falls, NJ My GMC Photos Last edited by wcstory; 07-13-2015 at 10:49 PM.