What ratio roller rocker to go with?

[KevinB]

I have a set of ported irons, a cam from Full Throttle (copied from their web site) with these numbers:
Intake 215 @ .050 .516 lift
Exhaust 220 @ .050 .529 lift
112 L/S (installs at 110)
(lift with stock rockers)

Looks like the T&D's have ratios of 1.5, 1.6 and 1.65. What would be the best ratio for me?

TIA

 

[KevinB]

I just talked to my engine guy...looks like 1.65's

 

[bison]

What spring do you plan on running? You better check your springs vs lift. Sounds like your too close to coil bind with 1.65's and stock diameter springs. Most irons flow stallls not to far after .500in so its not worth chewing up springs or risking smacking the valves at high rpm running to close to coil bind. Just my .02 though. You will have .549 intake and .563 exhaust with the 1.65's. I would go with the 1.50's or 1.55's.

 

[johnb1686]

wow when did you get the heads and the cam?