I'm running the LPE 211 cam right now with 1.5 rockers and lift is .503/.525. Do you think I will see a gain if I increase the lift with 1.6s? I'm running ported Trick Flow heads, fully ported Slp runners, Accel base, 3200 stall Vigilante,3.42 gears.

 

you will notice a gain with the 1.6s but if ya want you can also use the 1.7s as well both are worth the money and time

 

The Trick Flow heads flow pretty good at .500 inch of lift. So the more time the valve is open above .500 lift the better the overall flow will be which means more HP. I agree with the above post on the 1.6RR's.

I'am in the process of having my engine rebuilt and using similiar componets including the Trick Flow heads. The stock Accel base flows 251CFM which is the same as the Trick Flow heads. I'am using the Edelbrock base and having it Extrude Honed. Flow for the Edelbrock base should be around 275 CFM. In my opinion the extra 25 cfm is well worth it and helps the heads flow as much as they can.

Like you I'am also using the SLP runners. One side of mine are fully siamesed from one end to the other from the factory. The adjoining side is siamesed about 2 inches in from the top at the factory and I had the bottom end siamesed in about 2 inches. This will sort of match the other side. Again the flow should be good to support the heads and the total runner length will now be the length of the runners in the Edelbrock base.

In my opinion with good flowing heads and the intake/exhaust system to support them you don't need a big cam. Sounds like your cam will be good for your TPI system. I would guess your cam is good until the 5200-5500 rpm range which is about right for a modified TPI. By the way I will be running 10.5:1 compression and a ZZ4 cam and 1.6/1.5 RR for openers. Allen