Quote:
Originally Posted by Mikes66
Those are universal plates, not adjustable plates. There is no adjustment to them. They sit based on where the centerline of the rocker stud ends up. The slider in the center just allows for installation on any stud girth.
They do have wide rod holes. Not really sue that is a good thing either. Could be enough slop to get the roller tip traveling all over the place.
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I've used the Iskys before on the ProComps and they are indeed adjustable. The total amount of adjustment depends on the diameter of the pushrod holes. If the pushrod hole allows, you can move the the pushrods either closer together or farther apart. You do not want the pushrod to end up rubbing on the side of the hole in the head.
The pushrod slot diameter is set up for a Chevy 5/16" wide pushrod, which is the same diameter as a stock Ford. Ford requires a deeper slot. Supposedly Isky makes up a few hundred Ford sets at a time with the deepened slot. I can not confirm this though.
I deepened the slot on the mill. Then I installed them on the engine and adjusted for the best rocker arm angle on the valves. Finally I tacked the 2 halves in place, after clamping the 2 halves together and taking them to the work bench. Do not expect the rocker arm studs to maintain the distance on their own.
If there is no other way for the OP to get the geometry right, this is an acceptable option. As mentioned by another poster, the old fashioned way was to cut a standard guide plate in half and then weld it back together at the new distance.
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Dennis
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65' STANG (3330 lbs), 393W NA, Toploader 4 Spd, 4:11 TrueTrac, AFR 205's, Vic Jr. Intake, CI Custom SFT, 750dp, 11.0 CR
11.52@121.29mph
