posted July 30, 2003 09:30 PM
I bought a set of heads that have been milled but I dont know how much. when I tried to bolt my intake to them the bolts wont start. On the ends of the heads they are stamped 75.4 cc. I would like to know how much I need to get my intake milled. I didnt see it stamped anywhere how much the heads have been milled. Is this usually stamped on the underside? The heads are 487x. Thanks
posted July 30, 2003 10:35 PM
THE INTAKE SIDE OF THE HEAD ARE USALLY MILLED AT THE SAME TIME THE SURFACE OF THE HEAD IS DONE.THERE IS A CORRECTION FACTOR BUT IS HARD TO CHECK IF YOU DONT KNOW HOW MUCH THE HEAD HAS BEEN MILLED.TAKE AN SLIDING PROTRACTOR WITH A ANGEL FINDER AND SLIDE THE ADJUSTABLE SIDEON THE INTAKE SIDE OF THE HEAD AND THE 0THER RULER SIDE FLAT AGANIST THE SURFACE OF A HEAD THAT HAS NOT BEEN MILLED AND COMPARE IT TO YOUR HEADS. IF THE PROTACTOR IS NOT A THE SAME ANGEL YOU NEED TO HAVE IT CORRECTED.
posted July 31, 2003 02:12 PM
I had the same problem what i did was set the intake on the engine w/o the intake gaskets in place.The intake bolted up fine w/o the gaskets so i had the machine shop mill the thickness of the gasket off each side of the intake and the front and back.This solved my problem,hope this helps.