Ok so i no almost everyone on here has asked this question at some point or has just gone out and done there mods on there own but what i need to no is how to get performance out of a 5.9 wqithout screwing with the computer or emmissions im talking like cam headers tb ect anyone have any input

 

52 mm Fastman TB, gibson headers (or equiv) K&N FIPK (50 state legal) flowmaster exhaust, crower 1.7 roller rockers... are good starting points.

 

Yeah thanx for the input got any big ideas cam heads?

 

KRC performance.com for cam info and Hughes engines.com for the heavy duty heads. bare castings are something like $270ish IIRC... and they will outflow the r/t's. stock heads crack between the valve seats.

 

Awsome thanx for the quick replies

 

oh by the way can i have slightly cracked heads now and not even no and get a slight miss now and then out of the truck?

 

Miss now n then could be cracked heads. As far as adding upgraded heads and a bigger cam go, better do something with the computer cause I guarantee you will be running lean if you dont.(may needbigger injectors as well depending on cam duro/lift) Youwill not see as much gains without pcm upgrade (B&G flash).

 

Yeah i hear that nice motor Rm_indy and nice times thats what im looking for

 

You can't put a big cam in these without reprogramming the computer. It won't know what to do with such a big cam and it will run like crap. Reason being they're not Mass Air Flow Engines, it kinda sucks.