1.6 rockers on exhaust

[RW57]

We run a 425 lift rule class new motor is ready all but cam would there be any advantage on a 400 lift cam and using 1.6 rockers on exhaust only it would still check right well within a few thousands I have found a cam I like it's a 400 lift or be best to just get a 420 or so lift cam.

[perfconn]

If you have the clearance.you will see better performance by having the 1.6 rockers on the intake.You won't see anything by having them on the exhaust.

[RCJ]

1.6 rockers will increase the duration at .050 by a couple degrees.I've used them with good results in classes with lift rules.