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Auto to Manual Swap - 1st Gen

3741 Views 6 Replies 2 Participants Last post by  Brodrick_67
I have a 1991 S10 (4.3L with 700r4), and I was wanting to throw an NV3500 in there. I know I need everything from a shift knob to the pedal assembly. I know I'll have to cut a hole for the shifter, but as far as installation I don't have a clue. Would I have to get a new crossmember? Would I have to hack at the firewall for the pedal assembly? I have heard that I will need to remove the dash but I'm not entirely sure. Any input would be much appreciated.
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Just find another 89-93 4.3 5 speed and take everything you need off it. It's a fairly big project. I'd pull the seats, dash and steering column for starters. I think the crossmember will be OK. Not sure on the driveshaft. You'll need to do some re-wiring to eliminate the park neutral safety switch and add the clutch safety switch. Back ups are wired different also. A 91 S10 factory service manual and this wiring manual would be a big help:
This is a 1990 S10 Factory manual, but IIRC there should be no differences:
There won't be any cable to the pedal it's all hydraulic. You rear end is fine as is. It's based more on engine size than trans type.
Do a search on here for auto to manual swaps. I get the feeling you need to study the details bit more before tearing into your truck.
If it's a 4.3, some had 3.08 rear ends and got better mileage than the more common 3.42 which had worse mpg, but better acceleration. Particularly in the heavier models.
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