The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Difference in 250 oil pans and timing cover junctions

bubbasimms · 03-18-2018, 06:48 PM

Hello all,
I have what I thought were identical 250 six engines. I have one at the machine shop as we speak and I was collecting the best of the tins to clean and paint in preparation for putting the engine together. I noticed the oil pans and timing covers are different. One "set" has bolt holes where the pan and timing cover meet and one "set" does not. Can someone explain the difference to me? Seems the one with the extra bolt holes would seal better.

03-18-2018, 06:48 PM	#1
bubbasimms Registered User Join Date: Nov 2010 Location: Hollister Mo Posts: 137	Difference in 250 oil pans and timing cover junctions Hello all, I have what I thought were identical 250 six engines. I have one at the machine shop as we speak and I was collecting the best of the tins to clean and paint in preparation for putting the engine together. I noticed the oil pans and timing covers are different. One "set" has bolt holes where the pan and timing cover meet and one "set" does not. Can someone explain the difference to me? Seems the one with the extra bolt holes would seal better.