oil pump alighnment

[skeet]

Do not use sealer between the oil pump and block. Also the alignment is not critical, the only pump that needs alignment is the dry sump on the ls7.

it may not be critical to you but any decent builder needs to feeler gauge the pump/crank sides in the spots across from each other, specially on a aftermarket pump. this way you know its centered in its bore thus not leaving any guess work if something was to go wrong with the pump. specially if you dont pull the bolts up equally

[TurboMic]

It is critical.... If its against the crank on any sides... Metal to metal... Unless u like that kind of thing going on in ur motor. I center all my pumps.

[TXSZ66AVLANCHE]

Weird even my service manual does not mention oil pump alignment (other than ls7)

[country_3030]

I just get the pump bolts finger tight then turn the motor over to check for no binding or rubbing before torquing them. It is a good thing to check, I have done it with feeler gauges but it is a little more than whats needed. I only use a sealer if I am putting in spacers for a double chain. Other than that none.