Can i use this rockers http://www.summitracing.com/int/part...-856/overview/
for A Heads or must i found other Studs or rockers?

 

Those will not work.
Yes, you will need a stud with a 3/8 bottom and a 3/8 top and then use Comp cams roller tip rockers. I would replace the nuts in the kit, with poly locks for adjustment. Also you will need the guide plates and harden push rods. I would double valve cover gaskets or use thick gaskets, for polylock clearance.
OR, you can locate what I call a reducer. A steel reducer to reduce the 3/8 hole down to 5/16. Then you can use the kit you listed.
I prefer the first choice I listed, gives you adjustable rocker sys. Easy on the valve train, makes for better lifter preload.

Gene

 

Isn't the tap drill for 3/8 threads right about 5/16, thus leaving just about no material for a reducer?

I think a STI such as heli coil would be better. Just lose a little metal after 4-5 threads as the 16 TPI of a 3/8 bolt hole becomes 18 TPI while using the STI tap.

 

Very good idea.


Let us know what you do.

Gene

 

Any way to get 3/8 Rockers ?

 

See how much room you have on the pedestal and drill for the 3/8
I don't think there is enough room, but take measurements.
Gene


QUOTE=64Rocket;922065]Very good idea.


Let us know what you do.

Gene[/QUOTE]

 

I will measure and and let you know!

But is there any place to find stock 3/8 rockers for the A Heads?
And if i found studs with 3/8 bottom and 5/16 top i can use summit rockers ?

´thankitas

 

Drilling hole for 3/8" is not an option! Like 64 Rocket say not enough Material- (to be safe)!



But let me know if this is an option: 3/8 thread drilling in pedestal