I am currently saving money/making plans to do some upgrades to my engine. I am going to get a port and polish job done by Super Six and the say that they can mill the heads to .010, .020, .030 for free, so with this CAM and 1.52 roller rockers how much can I take off without blowing up my engine. Thanks for any info.

 

Any of the listed amounts will be safe, esp with that cam and near stock rockers...Redraif's are milled .020, and she is running lots more lift and duration. Even milling over .030, you'll run into sealing problems before interference problems.

 

BE CAREFUL MILLING THE HEAD.

If you mill the head, you MUST mill the intake-to-head surfaces as well, or you will not get the gasket surfaces to seal correctly.

 

i thought you could safely mill the heads up to .020 before the intake needed to be milled?

 

Not sure about that... lol, any time I've had a head that needed to be milled, I just tossed it. These iron head 2.8s are plentiful

 

According to my machinist, you can go up to .030 on these engines with no problems.

 

Thanks for the info. Im not lookin for anything major. I was looking at the .020 just to be safe. If anyone has any more info that couls help,feel free to chime in. Thanks again.

 

i know firsthand that on a virgin head u can take more then .050 off but u need to mill the manifold to match.anything more then that and u may run into pistion/valve clearance issues one reason why my pistions were machined but i also run a aftermarket very high lift cam,and u can run into valve train problems/custom pushrods and stuff depending on what cam u have