4x4 transfer question or 2

4x4 transfer question or 2

Postby markmitch [OP] » August 30th 2020, 1:11am

Anyone know of a 4x4 transfer that will handle a V8 and not have electrical to the ECM? like pre 94? Thanks Mark
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Re: 4x4 transfer question or 2

Postby dcsleeper » August 30th 2020, 2:19am

All 98 and previous Borg Warner 4772
Get the driveshafts to make it a bolt in swap.
They handled the Typhoon/Syclone's boosted (and modified) outputs, so no worrys.
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Re: 4x4 transfer question or 2

Postby dit » August 30th 2020, 2:23am

Most NP or NV transfer cases are not electrically shifted: 231, 241, 242, 249 etc. All have been used and abused behind V8s. The 231 was found in many S10 pu and blazers and is the easiest bolt up for an astro, no AWD though. People have been using the 231 manual shift in Astros for decades!

If you want awd/4wd manual shift you can use 242 or 249; I've been running the 242 for a long time. It was behind a V8 in a jeep Cherokee. Extensive write up in the old site. Be prepared for a lot of fabrication!
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Re: 4x4 transfer question or 2

Postby markmitch [OP] » September 16th 2020, 2:56am

Does the BW 4472 require being wired to anything such as the ECM I ask because I have a 98 front AWD frame with the BW 4472 I wish to know if I can use it with my 89 which is TBI/700R4
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Re: 4x4 transfer question or 2

Postby MechBob » September 16th 2020, 4:42am

Many answers,Mark.The BW is non electric,except for the speed sensor for the speedometer.BUT it is not 4x4, it is AWD.I think your 89 is electric speedometer also? A 231 is manual shift 4x4,a 233 is usually converted from electronic to manual,cable or linkage,and so it goes.The thing about fit,as long as you have the trans to t/case adapter for the right year transfer case.The back of a 4l60 is the same as a 700. But,you will have to change out the output shaft of the transmission.
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Re: 4x4 transfer question or 2

Postby markmitch [OP] » September 16th 2020, 6:12am

OK Thanks for the answer, I asked this because I may do the frame swap and leave the AWD transfer in my van till I can afford to buy a transfer from a S-10 at a pick n pull. Just in case I decide to do that I will hold onto the stock transfer. Now is there way to do the 4x4 transfer and have it so I can lock out the front axle when I wish to? Or is that not possible I am talking like I used to do with my K5. It had locking hubs but is there a way to do the same thing without the locking hubs parts? Thanks, Mark
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Re: 4x4 transfer question or 2

Postby MechBob » September 16th 2020, 12:53pm

Yes.The S10 front diff.is "split" at the rf inner axle,by a cable/vacuum unit,controlled by a vac. switch on the transfer case.That is what I have on my 94.But,also,they also make a manual cable conversion,so using the vacuum stuff is not necessary.
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Re: 4x4 transfer question or 2

Postby markmitch [OP] » September 16th 2020, 2:52pm

Cool that is exactly what I need to know. I am gathering all this info and putting it on an old hard drive labeled 4x4 Astro RS. so in the future I can access it to give info to anyone that needs it. Mark
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Re: 4x4 transfer question or 2

Postby Leeann_93 » September 18th 2020, 12:22am

MechBob wrote:Yes.The S10 front diff.is "split" at the rf inner axle, by a cable/vacuum unit, controlled by a vac. switch on the transfer case. That is what I have on my 94. But, also, they also make a manual cable conversion, so using the vacuum stuff is not necessary.


And that's what most of the Blazer/Jimmy/S10 guys do because the vacuum line runs under the battery tray on those trucks and gets eaten...often. So they install a manual cable instead.
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