Roller rockers that DON'T require head mods

[turbov6joe]

Are there any 1.65 ratio shaft style roller rockers for the OE heads that do not require modifications to the heads...IE...grinding at the mounting towers for clearance? If so, who sells them?

I had a set of aluminum Harland Sharpe roller rockers years ago and they required me to grind reliefs into the mounting towers so the arm could clear at full lift...don't really want to go there right now with the heads on the motor.

TIA

 

[Just a Six??]

From what I read most if not all do but the T&D required very little for clearancing on the pedestals with my stock heads. Could be done on the car with a die grinder or even a dremmel pretty easily I'm sure.

 

[Jerryl]

From what I read most if not all do but the T&D required very little for clearancing on the pedestals with my stock heads. Could be done on the car with a die grinder or even a dremmel pretty easily I'm sure.

X2
FULL THROTTLE SPEED - Store Front Page

On the other hand;
Typical max flow occurrs at lift around 25% of valve Dia.
Not sure how much benefit 1.65's will give.

 

[turbov6joe]

X2
FULL THROTTLE SPEED - Store Front Page

On the other hand;
Typical max flow occurrs at lift around 25% of valve Dia.
Not sure how much benefit 1.65's will give.

If that's the case then max flow is taking place somewhere around .425" (1.70" valve) and .442" (1.77" valve") which is right around where my cam lift is at.