False, one isn't any reliable than the other. Only people that try to jerry rig stuff then get mad when it doesn't work.

I dont really care about my speedo to work its more for offroad can my jeep start and just shift normally without changing ecu?

Yes, u need to make a kickdown for the trans

Wrong, more complex = more problems, besides they are allot more expensive to rebuild, in the money you save on rebuilds youd easily make up for the less mpg

It wouldn't be too bad in an off-road machine, the check engine light would stay on, but it would drive still. The TH350 would shift normally if you hooked up the vacuum line and kickdown linkage.

In a Jeep? I'm curious, whatcha building?

the only thing im concerned about with this swap is if the transmission is disconnected will it cause the engine to run bad? the way cars work now a days theres sensors controlling everything. i would just hate to put in a th350 then the engine doesnt want to start due to it detecting the trans not hooked up.... i guess you can just unplug it and see what happens.

one thing you will probably have to jump is the neutral safety switch.

if its just a offroad turd it should be fine as long as there is no problems with the engine. im running a np208 out of a 84 k5 blazer in my 93 s10. the VSS is not hooked up at all. truck does not shift unless you manually shift it. my truck is also a off road only truck, only time it sees 2nd gear is if it had a long open straight away and just wanna catch up with the group.

i was able to cut a hole and bolt the shifter set up to the floor on my truck, and i just stole a automatic transmission shifter, cable, and bracket out of a 91 camaro and it all bolted right up, im sure a hurst or any of that crap will work just as good

Its a 98 s10 blazer and i wanna put th350/np205 behind 4.3 ...and i dont care about shifting it manually i will have it inspected and on the road but only to go from home to the trail im not planing on going on a long travel with it

The engine should still run fine I think.

If you were to put a 4L60E behind an old 350 say, you would need the control computer to shift the trans as it's all electronic controls to shift the solenoids. th350 all you need is power in to make in move and a cable and vacuum line to make it shift properly.

Thanks ! I hope it works

U a diesel 4l60e controller when going that way