roller rocker problem

[bluenotch]

ok so I have gt40p heads and I bought crane 1.7 bolt down rockers and they hit the valve retainer idk what to do cuz arnt they suposed to just bolt on without any problems. any help would b appreciated thanks

[383taman]

ok so I have gt40p heads and I bought crane 1.7 bolt down rockers and they hit the valve retainer idk what to do cuz arnt they suposed to just bolt on without any problems. any help would b appreciated thanks

Need to change the pushrod length to fix the problem. Be best if you had a adjustable pushrod to do it.