After some thought, I've decided on putting 3.42 gears in my [2-wheel
drive] '86 Silverado... it has the 700R trans, a 305 ci, and soon; the
3.42. Does anyone have a similar set-up, and if so what are your "likes"
and "dislikes" of this combination?
Thanks for any help and for your thoughts... GC
You are REALLY gonna be lugging that engine! Your final ratio is gonna be in
the area of 2.40...
| After some thought, I've decided on putting 3.42 gears in my [2-wheel
| drive] '86 Silverado... it has the 700R trans, a 305 ci, and soon; the
| 3.42. Does anyone have a similar set-up, and if so what are your "likes"
| and "dislikes" of this combination?
| Thanks for any help and for your thoughts... GC
it's not that bad... my brother's '93 C1500 has that basic setup..
(4L60E, 305, 3.42) with his 235/75-15's it's not bad at all on the
highway and he gets about 18mpg. of course, I could drop my 88 K2500
in 4 low and rip his frame in half, but that's for another day.
I have a 1999 K1500 with a 5.7 liter and automatic transmission. The gearing
is factory 3:42 and has factory P265/75 R16 tires and have no problems with
lugging the engine. The 5.7 liter has plenty of torque to pull that gear.
The gear now in the truck is a 2.73... it's definitely doing some major
With a 3.42, I'd have slightly more first gear torque than a TH350 with
a 3.73 [typical combination in older Chevy PUs]... slightly less torque
in second and third... and overdrive for highway mileage.
A 3.73 would have more power in third, but would turn almost too much
torque in first... a 3.73 with the 700R's first gear of 3.06 would be
brutal on a little ole 305ci.
Wadda ya think?
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