Help in chosing LT1 oil pump??
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Teching In
Joined: Apr 2005
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Help in chosing LT1 oil pump?? I am rebuilding my LT1 and i have stock crack shaft and stock oil pan.
What type of oil pump do i get?
Do get melling pn# M55 or M155, High volume or standard volume?
Please i need to know.
What type of oil pump do i get?
Do get melling pn# M55 or M155, High volume or standard volume?
Please i need to know.
high volume, always, the LT1 comes stock with a GMPP high volume pump anyway. dont forget to get the feed tube welded, and set the feed at the correct depth (about a 1/4" from the bottom of the pan) some doughy substance works good for measuring this.
I thought with stock pans you are supposed to use std volume? I was under the impression a high volume will pump too much oil up top and leave your bottom end dry. Just what I thought. With the 6 and 7 qt pans you got extra oil for the bottom end and the high volume works well. If the stock LT1 had a HV I didn't know it.
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I don't think there is any need for a high volume pump with a stock oil pan. STD volume pumps are plenty, even for a built engine. Besides oil system capacity I believe another determining factor would be how the bearing clearances are set. I know a few engine builders that run almost all std volume pumps, and change the spring to raise oil pressure.
