First off i have a 03 RCSB 5.3 bagged on 20's . The mods that i have are gibson chrome shorty headers, custom exhaust, Hypertech PP3 93 octane tune, volant throttle body spacer,DJ motorsports cold air intake, 160 degree thremostat, posi 3.73's, TB coolant bypass, dual elecric fans. How much power am i making? It has definatly woke the truck up from what it was, but i have a long way to go. future plans are a turbo 408. what should i do in the mean time.

 

First, get rid of the spacer, its not helping. Toss the Hypertech too and get a tune, a true dyno tune if you can but a mail order if thats all you can find. I run shorties too but you'll get much more from long tubes if you can run them.

 

he probably cant run LT's since its bagged...

def get rid fo teh TB Spacer and Hypertech, Dyno Tune for sure, if not Nelson could give youa good mail order tune.

save ur money for the turbo 408 build..start buying parts for that. get a nice 6.0 block, have it bored out, buy the rotating assembly....

no point in wasting money in engine work if ur not gonna use it soon. but if ur 6.0 build isn't for a while...get a nice little cam liek a 212/218 or tr220 and a stall