prime oil pump problems...

[denson1932]

OK so now need to verify good oil pressure and adequate oil flow up to all the rockers in the fresh built 409...i have the intake not installed yet and use a EBay SBC primer it works but i get only about 10PSI (on my gauge screwed into the block above the oil filter) because the oil rises up in the dist. shaft well and overflows into the lifter galley. i cut a piece of rubber mat and punched a 1/2" hole into the center so as to plug the top of the well...unfortunately even when pushing down on the improvised gasket, and since the casting for the intake in the back is higher that the rest of the well so not doing me much good....and yes the drill is rotating CW looking down the well... do i need to sacrifice a 409 truck dist??? note: 10W 30 plus cam additive....
luckily all the oil overflow is flowing into the lifter galley not on the floor.

 

[Fathead Racing]

The 348/409 pump oil primer and distributor is 409/348 only. The small block Chevy pump housing is different. To get oil to the engine property you will need to use a 348/409 primer designed for the W engine or as you said sacrifice a truck distributor.

 

[denson1932]

Thanks for the verification...i just got home from a trip to fetch a truck dist.......tomorrow cut and grind it....or i guess i could order a SBC to W dist sleeve?

 

[4speedman]

I used the adapter sleeve and a sbc distributor modifed for a primer on my last w motor start up a few weeks ago and it work good

 

[denson1932]

Here the sacrificial 409 truck dist. modified...cut the shat at the upper groove, added a sleeve and a cotter pin thru the 'governor?' hole down lower in the shaft....Success... got 55PSI and took awhile but verified oil to all 16 rockers.

 

[63impalass409]

That's what we like to here