Priming new GM crate 376/525hp HELP !!!!!
11-22-2015, 12:59 PM
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Priming new GM crate 376/525hp HELP !!!!! New to the site. Just installed my new GM crate and having some concerns with priming the oil pump. So far here's what I've done. I removed all the plugs and disabled the fuel pump/coil packs. I turned it over 4-5 times at 10-15 seconds each time and still not reading pressure on mechanical oil gauge and no oil coming up to rockers. How long should this take and should I be concerned ? I've been told to just fire it up and the pressure will come up.....any advice would be appreciated.
11-22-2015, 06:03 PM
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The best way that I found to work for oil pressure was to use a pressurized gallon lawn sprayer filled with oil and pressurize by adding a ball valve to the line that dispenses fluids along with a fitting that will hookup to the internal oil system externally via one of the external threaded ports. ie. oil gauge sender etc. Then externally connect the sprayer line to oil system through the external port and pressurize the engine until you have a pressure reading to the oil gauge and oil flowing from the rocker arms. Using this method insures that oil pressure occurs at startup and no engine wear or failures occur because of lack of oil pressure.
PS Walmart sells one gallon sprayer around $10.00 that perform perfectly for this application.
PS Walmart sells one gallon sprayer around $10.00 that perform perfectly for this application.
11-23-2015, 09:16 AM
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Ive heard by numerous folks to just start the thing, it just makes me nervous.....looks like I'm just gonna have to be nervous. I will start it up today and pray to the motor gods it primes within seconds of it running !!
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11-30-2015, 02:20 PM
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Got her goin !!! Used the garden sprayer method, pumped 6 quarts of oil in it through the the oil sending unit port and got it coming out of the pushrods. Fired it up and had oil pressure immediately. She's purring like a kitten !! Thanks for all your help