im gonna be swapping to tpi here soon, and to different heads. the heads that im gonna be installing are the 187 heads, but they are 2.02/1.60 valves, ported, polished, and 1.6 roller rockers. i also have 1.5 roller rockers sittin in the attic if i need to use those. the tranny is a t-5 and right now im running 3.42 gears. what cam do you guys think i should run. i like the sound of the Comp Cams Xtreme Xfi268 roller cam. also what valve springs should i run? i thought about the beehive springs. but i dont know if that would be overkill or what. what springs should i run?

 

i think that would be a great choice. the beehive springs would be prefect with that cam. i think they can handle something like .6 lift.
one idea i do have is that comp has a cam with the same lift and duration but the LSA is closer. if your using the tpi style intake you should try a 112 or even a 110 LSA. that will help the power build up faster. witch of couse is a good thing for LTR tpi's. and with the 110 LSA it shouldnt have too much over lap. so you can still tune it.

 

thanks for the input. there has been some change in plans though. for right now im not gonna run the 187 heads. because im stilling running with a 305. the heads on the 305 are still the stock tbi heads. but they have ported/polished, z28 springs, and 3 angle job. but the tpi system is still gonna be installed. and im still gonna slide a cam in to. now onto the question about beehive springs. what kind of beehive springs. i looked at jegs and summit and there is a bunch of them different seat pressures and sizes. i dont know which ones to get? i would like them to hold up to some rpm like 6000.