Flareside302

Mine makes power from idle but really opens up at 2k..

Ya gotta realize you get to 2k rpms so fast there will be virtually no difference..

Close to sea level.. I think 600 or something

oldcelicaracer

OK so elevation is a contributor,you see the original point of these mods was to pull my camper better(don't like being the slowest thing on the road and hills)this summer I pulled my camper up to glacier national park and was going through mtn passes and high elevations so I need the power right off of idle,its a 19 ft plumber pull and she's heavy,

nosebleed

ive thrown the estreets out the window at this point. heard they have some casting problems which suprised me. so its between the gt40x heads and the tfs. its gona be my dd for awhile to come so it does need to be street able. and i dont wana get to aggressive with the cam. if i could make 300 id be like a fat kid in a cake factory. the truck weighs around 4000lbs. so it would be quick

351stroker

I think they cant handle lift over .550. I did say before they were made to compete against some chinese junk heads and they do but not much better. I would go with the GT-40's Trick Flow are good too but the GT's are cheaper i believe.

nosebleed

i am starting to lean towards the gt40s. they seem like theyd be more streetable and better bottom end