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have a k3500 7.4 has 4;10 gears is 4;56 gears better at times but cruz will it give better mpg ?

i just got a 98 silverado k3500 with a 454 , long bed it has a 410 gears .is it better to run 456 gears in it for every day driveing ( FREEWAY, TOWN) DUMP RUNS HERE and there ? it feels like i am flatting out when i do step on it

what is the best headers for a truck ? if can tell how much hp it can make

how much hp is to be found on a set of headman headers that hook up to your y pipe and are they worth getting a set ? i do have an air intake, 2 high flow cats, 2 highflow mufflers.

what can i do to get a little more power ? i have 33's so would a gear change help what can i use ?

what is the diff. in short headers and long headers ? what will i get out of them ?

iam looking in to getting 35s or 38s i now have 33s what gear change is best to go with if i do 38s i do drive it every day and off road every other weekend is there a better gear to run i heard to run 410s i get better mpg and tourq. than i heard to run 456. i do a lot of freeway driveing or...

what is the hp on a stock 1997 chevy silverado z71 350 4x4 ?

what carb is out there that is a good bolt on carb. for my o1 400ex ? and how much will it cost. my quad is full piped if that helps

need more low end power i have a k/n air intake and flowmasters . i would like more i was thinking a comp cam but dont know what to go with and a set of headers