Rebuilt my '94 motor to a 383. Had the heads squared off and the block prep as well. Now when I install the intake I have about 1/16 inch where you would apply the sealer. Installing the bolts does not close the gap.

Any ideas as to why????

 

Too much milled off the heads and/or block surface. No biggy. The book says that if more than 0.020 is removed then the intake side of the head should be milled sense the geometry is different. I have seen people here be ok w/ 0.030 removed but some have had leaks. BTW, they must of removed alot of material to have a gap that big. If you know how much they removed I can tell you how much they need to mill off the otherside. All the milling can be done on the intake to make it easier instead of the head. It doesn't matter.

The most important thing is to make sure you measure you pushrod length. You will almost definity need shorter pushrods.

Jeff D.

 

That's what I was affaid of. Is it possible that using a thinner head gasket .029 vs .039 also be the issue as well. Should I use .039 instead?

 

Ok, I managed to close the gap to .019mm. Does anyone know if the two surfaces should mate with no gap?

 

I have never read of anyone having problems with 0.020 gap. The book just says that is when you should "start" to look at counter milling.

Jeff D.