Marlin Crawler's Dual Transfer Case Installation

Mike's Toyota Page

Marlin Crawler's
Dual Transfer
Case Installation

My Carb transfer case converted to an EFI transfer case with 4:1 gears in it.

The only difference between an EFI transfer case and a Carb case is the internal shift forks. (two circles at the top of the face)

My second Carb transfer case mated to the Marlin adapter. This is only the low range part of the case.

Bar stock welded to the front shift fork. This keeps the shifter from sliding out of the fork.

Both cases put together.

The front case is shifted by a shifter that sits on top of the transmission, right behind the transmission shifter. The shift fork sticking out of the front slides into the tranny.

These are Mpegs of the rear output shaft flange
at idle, 1st gear , in various tranfer case gears:

4WD low range (44:1 crawl ratio)

4WD low range with 4:1 gears (77:1 crawl ratio)

4WD low low range (175:1 crawl ratio)

I ordered new driveshafts from Tom Woods Custom Driveshafts. He quoted me a price including shipping that blew away any of the local driveshaft companies near me. Because I have a short bed/standard cab, Marlin recommended that I run a front driveshaft with a CV in the rear as well as in the front. Figuring that Marlin knows what he is talking about, I did as he recommended. So, I measured the distance between the center of the flanges with the truck level and at rest. I came up with:

Front driveshaft: 34 1/2"
Rear driveshaft: 39 1/4"

These measurements will vary depending on your lift, axle placement, etc. I found another front driveshaft in a junkyard for $50. That's a little high, but I was desperate. I called Tom and told them that they were en route to him. 20 days later,(damn UPS ground) and I had them back, ready to install. They looked brand new adn were greased and ready to go.

Last updated: 02/21/00
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