Al2011

Hi everyone!

Got a question. Is the gasket in the link below for the oil pump to main cap? My engine is Olds 455.

http://www.summitracing.com/parts/fel-13458/applications/make/oldsmobile/engine-size/7-5l-455

If i don't use a gasket do I just bolt the pump without any sealer or what sealer should I use.

Below are two other gaskets I found but not sure if any gasket is required.

http://www.schumannsdynamicperforman...ng-gasket.html

http://www.mondellotwister.com/PB-300.gif

gregvm

No, that summit gasket is the oil pump housing to oil pump cover gasket.
No gasket/sealant is needed for oil pump to main cap mating surface

64Rocket

http://www.schumannsdynamicperforman...ng-gasket.html

that is a oil pump to main cap gasket, with the oil pump pick up to oil pump gasket.
The gasket for the pump to main cap is a very thin copper gasket. I have seen one, but have not use it yet. Something new that some one think is needed.
From the factory it is metal to metal, no gasket used.

Gene

joades

I just saw this thread and have the same question on the 455 I am building. My gasket kit came with NO pump to main cap gasket. My shop manual is no wealth of information on the topic. Is the pump to main connection truly metal to metal? Would obviously leak but seems to me it would be so minimal that it could not affect the oil pressure.

Octania

Leak?

To where? The oil pan?

Certainly not enough volume in such a leak to affect the pressure in the engine.

The factory engineers did not use a gasket there.... hint, hint.

matt69olds

The oil pump to main cap doesn't use a gasket, nor is one needed. The surfaces are both machined flat, there is no place for oil to leak. The mondello part is baffle to keep oil from climbing up the back off the oil pan. It just happens to use the pump to cap mounting surface as a place to bolt it in. If a gasket was needed you can be sure the Olds engineers would have included one.

Run to Rund

Just bolt the pump onto the cap. No reason to worry. You are falling victim to the mantra "there is no end to concern."