Hey all,

I also posted this in the 335 forum, but there's more traffic here so I posted here too.

Recently had a 400 machined by TMeyer Inc.

I'm currently running into an issue when shimming it, at .80 I'm still quite a bit off a good pattern. I am using an adjustable pushrod set at the proper preload

I have to shim it to .160 to get a nice pattern on the tip, but by then I have completely lost the pedestal.

I'm thinking the heads have been machined too much, causing the valve to come up and now I'm having to compensate a ton with shims. I have .020 and .040 shims.

Here is no shims on #1 intake


I'll post more pictures of different shim combinations. If needed

NOTE: I've been doing the tip sweep with proper lifter preload, should I bottom out the lifter (I have adjustable pushrods I've been using) to simulate it being pumped up and get the true tip sweep?