Thread: 1970's Block & Gen5 Heads?

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Originally Posted by Constant840

Thanks.
Okay, so I know I have a Mark4 block.
I get that I can run the Gen5 heads; 7/16" studs recommended and not a problem.

I still need, and can't find, anything on the proper gaskets to use.

Didn't follow with the f1037 and f1047?

they are felpro numbers the f1037 is a mark v454 gasket . the f1047 is big bore v 502 . alot of the felpro are print out for both water ports older mark 4 and 5/6 the 1037 is the one i have used on the older block with 5/6 heads if mark 5 /6 heads i drill and tap them out for the older 7/16 top and bottom rocker stud ARP makes a stud that works in the mark 5/6 head thats 7/16 and 3/8 bottom but alot of builds i do i used the 7/16 top and bottom stud keeps them from busting off