drifterwanb666
OBS Enthusiast
Technically it did, i mean i swapped the cam but not the cam bearings, and lost 10psi of oil pressure. And my pump was pretty wore out after i swapped it, it was ran dry a few times it seemed, galled and the gears didnt really mesh well.unless it has a Specific NEED for a Hi-Volume oil pump; Don't !
OE L31 (& L30 305 & L35 V6) have improved M155 repeat M155 pump having larger 3/4" OD pickup tube.
*just saying ...of course the pump ain't causing drivability issues ... but installing HV pump is rarely a good idea ... lotsa monkey see-monkey do.