[DimebagDarrell]

hey i hvae the 3.42 rear end, and i usually only race up to like 60-80 mph, my truck hits 105 pretty quickly, and i will be modding the engine quite heavily, should i jump to 3.73s? can i find these off of a 2.8 at a junkyard? also, how would i replace the gears? thanks!

 

[SSOnFiyah]

Yes 3.73's will help u alot ur gonna pick up a couple tenths of a second in the 1/4mile maybe more! I'm not sure u can get 3.73's out of a 2.8 but if u can see if u can fid an extra and give me a holla

 

[Wicked X]

The change to 3.73 is not that much of a diff. Go to 4.10 for what you want to do. I Tried them both. The 4.10 worked out better
for racing. Just rember you have to reprogram the computer
for any gear change.

 

[DimebagDarrell]

how do i reprogram the computer?

 

[02REDXBLAZE]

Get yourself a Hyper Power Programmer. Yje difference is nill. your only bypassing a 3.55 ratio. will not cut more than maybe a 1/10 or 2 if that off your time. your 60 ft time will be better but you will also give up mpg..

 

[Twin-10s]

programmers only work on 96+ 4.3s.
you would have to get a chip burned, or the dealer might be ale to fix it for you. some shops that do gear ratio changes might be able to do it to.

 

[V8Blazer]

I gotta idea for ya,go to your junkyard and look in a S-10 blazer with a stick shift,mine came stock with a 3.73 gear in it and it was a 2.8,if you have overdrive dont be afraid to try the 4.10's