Higher top speed?
 

Hey guys. I have a stock '95 3500 4x4 with an auto tranny with 235/75 tires and 4.11 gears. Only thing done to it is cold air and a 4" straight pipe to a 9" stack.

Right now on the highway I can only hit a top speed of about 70 mph before I start defueling and can't go any faster. I would like to be able to reach at least 85-90. I was thinking to get maybe some 3.73 gears and I bet 3k governor springs would help tremendously. I was wondering if I was on the right track and if there are any other ways? I would appreciate any thoughts!

find a guy with 3.54 axles and swap him. 70mph is about 1900rpms if i recall correctly in my truck.

Yeah. How is it around town driving though? Does OD bog really bad going around 45?

yep evrytime. gotta push the little button when your in town.

i will trade you 355s for your 410s

Oh I gotcha. What do you cruise 45 at?

Hey pukie, i already promised a buddy of mine my gears when I get some new ones :/

like 1100 in OD

Cool, thank you!

I had the same problem with my truck so I put a bigger tire 33" and did the 4k gsk now I have no problems going those speeds on the highway