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1SILLYGT 07-27-2001 10:22 PM
Big problems need help
 
I just dropped a rebuilt 302 bottom end in my 90 GT and put a pair of GT-40 heads on it. I have a 160 thermostat in it, but whenever she heats up I lose oil pressure. Can someone please tell me whats wrong.

exgmguy 07-28-2001 05:14 PM
This post will get moved to Windsor Power by Kevin.

How much does the pressure drop when it gets warm? It it idles at 50-60 psi cold, then idles at 30-40 hot that is nothing to worry about. If you warm idle oil pressure is around 25 psi or lower on a brand new shortblock, you have problems. Too much bearing clearance.

You do have a mechanical gauge, and are not going off the factory dash unit right?


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