I have a 4.2L w/ Volant cold air intake, and an exhaust. Does anyone have any other ideas for more pulling power. Can't get a new truck, so I gotta work with what I've got.

 

twin turbo!

 

Spark plugs, wires, Fuel additives, High performance oil (ie: Mobil 1), high performance oil filter (Mobil 1, K&N, etc.), I'd put a centerforce clutch on there (since it sounds like ur clutch takes a beating with pulling or racing, whatever ur thing is)-presuming it's a manual, There might be a performance chip for it (but I dunno), Underdrive pullies (if they make them for a V-6), Don't run the A/C, Get trannie fluid changed, Don't run ANY accessories, Eliminate as much weight as possible, Improve aerodynamics (by keeping windows up, etc.), Run heater at full blast (this helps cool the engine, supposedly), Use a higher octane fuel (mid-grade, not premium), keep tires inflated to about 4-5 below the MAX cold air inflation PSI, and definately look at turbos, supers, etc.

Good Luck.

(BTW-- if ur crazy enough, get nitrous, but I strongly reccommend NOT getting it, as you can ruin ur engine easily)

 

actually, you cant twin our trucks. a single turbo can supply enough boost by it's self. (about 10 psi stock) a twin setup would just be a waste of space.

 

I got the XCAL2 for my truck. What a difference custom tuning makes, even for our 4.2L. Next for me is some gears, 4.30 I'm thinking.....

 

what is xcal2? how much is it and where do you get it? thanks for the replies

 

how and where do you get a turbo for a 4.2? how much does that cost. What else needs to be done along with the turbo. Thanks

 

you have to make your own. no one makes a kit. you can buy a supercharger "kit" from need-4-speed.com but I've herad it sucks.

 

The Xcal 2 is a handheld tuner. It has feature you would never use unless you go to the track or want to change tunes often. If I were to get a tune I'd go with a switch chip. Swap tunes on the fly without shutting down.

More torque? Get gears...Not sure what you have right now but you could go with 3.73 or 4.10 to 1 ratios. That is probably the quickest way to go. You will need a speedo adjust because it will throw it off by about 10%.