Mate your GM transmission to a multitude of transfer cases with the Advance Adapter T case adapter.
It's length makes it a good fit to replace your stock trans without having to modify driveline lengths. A good way to help offset the cost of these little goodies. These conversions are not for the faint of wallet.
Q: Do you have an adapter that will mate my th350 to my Dana Spicer 18 transfer case? Answer this question
A: Please reach out to our sale team or Advance Adapter direct for further assistance on this one: Toll Free: 1-877-474-4821
Answered by Kelly from 4WP Corporate Headquarters on 07/23/2021
Q: Do you have this in stock? Answer this question
A: We do not stock this item. It would ship to you from the vendor. Please call our sales team, they can call the vendor to see if they have it in stock or not: Toll Free: 1-877-474-4821
Answered by Kelly from 4WP Corporate Headquarters on 05/04/2021
Q: i have a pristine 1978 gmc jimmy high sierra 4x4 with a 3:40 posi gear ratio350 motor and 3 speed auto trans.my question is i have a gm 4l60e trans out of my 2002 ram air ta that id like to put into my jimmy with the stock motor and tranfer case do you have a kit in order for me to do this? i dont off road the truck only has 50k original miles and has been in storage for the past 14 yrs.more of a show truk and drive when its nice out,any help would be greatly appreciated. joe lufkin from buffalo n.y. Answer this question
A: Hello Yes there is a new output shaft that will adapt the 4l60e trans to the 203 case. The adapter between the 305 and 203 transfer case is the same for the 4l60e. Here is the correct part number you need. ADV 50-6900 the kit runs 162.99 Thanks
Answered by Rody on 04/09/2015
Q: I have a 4L60 auto trans with a 4/wheel drive rear shaft, will this shaft be ok to use to adapt your 4L60 to my 1997 NP231 transfer case. Also, if my shaft will work can I buy your adapter minus the out put shaft and then what will the adapter kit cost. Thank you Bill Stephenson Clearwater, Fl. Answer this question
A: Hello Bill What year is the 4L60 transmission? There are a few different kits that don't require a new shaft depending on the year.
Answered by Rody on 02/04/2015
Q: can you simply slide on and bolt up a d300 to a th350 4wd trans or is there a modification needed to the tailshaft for application veheile yr '78 to '86 th350 trans Answer this question
A: Hello Both of these transfer cases would need an adapter kit to be mounted. The kits are different depending if it is a 4wd turbo 350 or 2wd. Then there are different input splines on the 231 and two different Dana 300's.
Answered by Rody on 11/13/2014
Advance Adapters got its start in Downey, California in 1971 with a single adapter mating a Muncie car 4-speed to a Jeep Dana 18 transfer case. Eventually headers, overdrives, motor mounts and linkage brackets were added to the offerings to complement their core adapter components. When interest in rock crawling spiked in the mid-1990s, Advance Adapters offered low ratio transmission swaps then switched gears into the ultra-low gear transfer case arena. Today, the company is based in Paso Robles, California and their engine and transmission conversions for Jeeps are in kit form and sold as individual components. Shop Advance Adapters Now
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