Are older S10s geared lower?

[dmbrisket 51]

another ? is, if i swap a 2.2l rear for my 4.3 rear, can i keep the posi and get more power from the lower geard rearend?

[NaKeDZX]

At least back to 94 and newer are limited to 100mph.

[dmbrisket 51]

96 was when it was mandated all vehicals by federal law, an hence the birth of OBDII (more then a speed limiter was installed so please no one point it out, it was an emissions thing)

[J-Ri]

Originally Posted by dmbrisket 51

another ? is, if i swap a 2.2l rear for my 4.3 rear, can i keep the posi and get more power from the lower geard rearend?

If the ring&pinion can be swapped, or if the posi carrier can be put in the 2.2L, then yes.

[dmbrisket 51]

and this will give me excellent low end and slower at the top end correct?

[J-Ri]

I'm not sure if they nescessarily have different gear ratios, but if the 2.2 is a lower ratio, then you are correct.

[smokey041369]

GM light duty trucks came with different transfer cases for the different engines and gear ratios

they are :

new process 205
new process 241
new process 231
borg warner 1370


my 89 s-10 has the 231 with 4.3, 700r4 trans, and gu 6 axles, my buddies 89 s-15 has a 4.3, 700r4 trans, gu 5 axles and 241 transfer

he put the 231 transfer in and lost speed, gm service told him the the gearing in the transfer case isn't geared for the gu 5 axles it's geared for the gu 6 axles

[Ducaire]

Originally Posted by J-Ri

I've got a 93 4.3L, it will go pretty damn fast. I was cruising down the highway well over the top of the spedometer. When I let off the gas, it took 10-15 seconds to coast down to 85. Those of you that can't go over a specific speed either have an exhaust restriction or a clogged intake.

Is there an easy way to tell if that's the problem? Also, could a dirty fuel filter cause the engine to have to push harder at higher speeds? (I want to get good gas mileage should I ever get on the interstate).

[Cam1959]

Originally Posted by Jerry80871852

Please remember the smaller V-6's do not have the power of the 4.3, so if the power is not there it will not do as your 4.3 does nor mine 92 S-10 Blazer with the Votec 4.3.

Also had a 1985 full size Chevy pickup, with the 4.3 and a 4 barrel carb., it did not have the power to pass someone on the open highway, but when you kept your foot in it, it consumed much gas, but it would not reach 90 MPH, to much truck and wind resitance for this motor.

The 4 barrel sound good when you steped into it, but the result of stepping into it were not much.

Correct I guess because my '83 s10blazer 4x4 2.8 carb will not stay in overdrive with any upgrade or attempt to speed up much when cruising at decent rpm around 60 mph. otherwise rpms gets high and temp starts to climb. in my opninion 2.8 poor choice for lot of highway use but fine for a little with reasonable speeds. think of it as the gas saving city s10 and the 4.3 the country powerhorse highway passer. pushing a 2.8 hard on highway a lot in my opinion will cause greatly accelerated wear on engine and tranny. be light on the gas pedal and patient with traffic and it will last ;-) keeping it in overdrive saves expensive gas and repairs.

[budshaver]

got a 1990 blazer with many boltons. The truck seems to beg for a higher gear. Was told I had the heavy duty axles withe 3.55 gearing. Think I need a 3.73 and it IS 4wd.

Where can I find a writeup on changing these two gears???

[dugie6551]

In 1987, the S10 line of vehicules had electronic fuel controls (TBI, fuel injection, etc.) and computers. Maybe there is a rev limter or speed limit setting in the computer.

Could this be a possibility? I would go to a dealership and ask the maintence shop guys the question.

[xtrememeasures10]

I have a 97 2.2L 2X4 and its top end is at 95. Something is different from mine. Couldnt tell ya tho

[budshaver]

may be a 3.42. Seen this 4.3 go 114 mph on the freeway...Thats with the digital dash. Got out of it cause got nervous

[Ducaire]

Originally Posted by NaKeDZX

At least back to 94 and newer are limited to 100mph.

What is it that keeps a newer vehicle from going faster than 100 mph? Is it a governor of some sort? Can it be taken off so that the truck will go over 100mph?

[I know with school buses, the governors only allow the bus to travel at 65mph (some only 55 or 60 ), but I've heard of the busdrivers removing them so that they could do about 80 if they had to get on the interstate ].

[dmbrisket 51]

its done by computer through the wheel speed sencor (wss) and the only way around it is to reprogram it, you can disable the sencor, but that is odomiter fraud, because the cluster quits working, your speedo doesnt work and you would quit racken up the miles