brandoncw":2gjo9vl8 said:Do i need 3/8 chromoly rods or 7/16 dual tapered rods?? And what length push rods for these rockers and an 85-86 head?
A 3/8", .083" to .095" wall pushrod is sufficient. The biggest pressure is opening the exhaust valve against the high cylinder pressure during high boost levels.
You will need an adjustable pushrod to figure the correct pushrod length.
Comp 7903-1 if you have access to a 12" caliper. Comp 7706-1 if you don't have a 12" caliper.
The height of the roller rockers must be set so the roller tip rides equally accross the center of the tip of the valve stem as the valves open and close.
After the rockers are at the correct height then the adjustable pushrods are reset for the correct lifter preload giving you the correct pushrod length.