GM SB oil pump spring

[Patrick B.]

I am trying to make sure the old GM oil pump I have is the right one for a 70 LT-1. Is the GM production oil pressure spring color coded or otherwise identifiable? Also what is the correct one piece oil pan gasket for the original 1970 timing chain cover?

[Joe L.]

Re: GM SB oil pump spring

I am trying to make sure the old GM oil pump I have is the right one for a 70 LT-1. Is the GM production oil pressure spring color coded or otherwise identifiable? Also what is the correct one piece oil pan gasket for the original 1970 timing chain cover?

Patrick------


The spring used for the LT-1 oil pump had a stripe of white paint and was of 21 coils. GM #3848911. The paint stripe may or may not be discernible after long use in the pump.

There is no 1 piece oil pan gasket available from GM for pre-1980 small blocks. The Fel-Pro # is OS34509T (blue) and the Mahle # is OS32458 (black).

[Patrick B.]

Re: GM SB oil pump spring

Thanks Joe