My 422 smallblock build

SSG_Karg said

Thanks for the reply and pics. Those look like the same Smith Brothers pushrods that I have.

Do you guys think that the adjuster being too far through the rocker is restricting oil to the cup? And moving the cup closer to the rocker will prevent the overheating?

@9secRR , are you running different length rods for intake and exhaust?

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It will help for sure. You can get away with the oil holes being off if your spring load and rpm are relatively orthodox.

I think at 300 on the seat and 8k we would nip an adjuster now and then.

When I hit 325 on the seat and 8800 rpm you could barely get heat in the engine before it would kill an adjuster. And the pushrod.

So it gets expensive right quick.

I always run two different length pushrods.

IIRC the intake is .050-.060 longer than the exhaust. Don’t quote me on that but it’s pretty close.

When you start playing with the stuff you are, you should do everything you can to eliminate any weak spots you find, and as you can see the Chrysler numbers for adjuster protrusion are pretty specific. For good reason it appears.