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Old August 11th, 2017, 06:46 AM
George Bongert George Bongert is offline
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Join Date: Jan 2013
Location: Oshkosh Wisconsin
Truck: Former owner Repowered by GMC 305 V-6, 1963 Chevy 30 Series SM420 Long Bed (9') Step/Fenderside
Posts: 210
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Default Re: What type engine?

Quote:
Originally Posted by AZKen View Post
Plaid cover were in 63. Stories are: GMC wanted to snaz up sales and/or designate some update change. One year only. Never seen any actual documentation as to why plaid except some say Scotts were frugal and so was the GMC? or something like that.

I am not an expert on this, but have done it a few times. Others will have further ideas/suggestions/procedures.
Start up is generally making sure the motor is not frozen by hand turning it, with plugs out, to see that it is free. Then making sure there is fresh oil/filter and that the oil is circulating. You can squirt oil all over valve train. You can crank motor and see oil flowing up there which tells you the oil pump is working.

Depending on the known history and last time run, some folks will spin the oil pump using a drill to observe a gauge or see flow in valve train. Some will install a new pump. Some will take their chances and be sure to rig up a pressure gauge at the gauge sensor hole on filter housing. Some will squirt some oil into each plug hole and soak for a little while before cranking with plugs out. It is good to do this cranking using the starter, before actual fire up. Take off center tower wire on distributor, so it won't have spark.
You can search on this web site and others for general start procedures for motors that have been sitting. It's basically the same for all older motors, Chevy, GMC, etc.

Starting up and running a motor that is not circulating oil will cause damage. Don't get paranoid, just do the diligence. If you can not turn motor by hand using a socket on the crank pulley (plugs out), there will be a whole new procedure.

Greetings Fellow Club Members!

Adding to AZken's suggestions, it is also highly advisable to use compressed air to blow any dirt or other debris from around the spark plugs before removing them so that it (dirt) does not wind up in the cylinders. The GMC Big Block V-6 engines are the only ones that I know of where the location of the spark plugs would allow this to happen.
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