[GOSFAST]

I believe the "093" heads are the same configuration as the "092's", recently delivered a pair with this setup.

Fairly easy deal, used ARP studs (134-7103), Isky adjustable plates (AGP-200), and some Comp's roller rockers. Comp also has the guide plates available now (4835-8).

You drill the OEM stud holes to 1.000" deep, same size as original (7/16"), then machine .250" off the original boss heights, and finally, heli-coil (7/16"-14) all the original rocker stud holes.

I placed this info up here a while back, a "search" might locate it??

The final machining is open up the OEM pushrod holes in the heads, they aren't needed at this point!

Thanks, Gary in N.Y.

P.S. Here's a before/during/after shot of the studs/plates. Wasn't all that bad. We also did exh seats with no issues, but did require "custom" sized inserts with a large corner radius!

[SD421]

Originally Posted by GOSFAST

I believe the "093" heads are the same configuration as the "092's", recently delivered a pair with this setup.

Yes, the only difference is the chamber size. The 092's are 70cc & the 093's are 68 cc's (10.5 vs 10.75 ) compression

Don

[Poncho-V]

Be sure to use thread sealer on any that are drilled into ports or water passages!