Adapting the
Chevrolet & GM Standard Shift Bellhousings
to the
T98 Transmission
as found in Kaiser M715 & M72x Military Trucks

Kit C715, adapting GM small & big block bellhousings to the M7xx T98 transmission Part: #C715 Weight: 14 lbs. Price: $394.00 Buy: If using a GM bellhousing that has a 5-1/8" bore, you will require the following sizing ring: Ring, sizing, precision, 4-11/16" GM bearing retainers to 5-1/8" bore bellhousings Part: #BR4 Weight: 0.25 lbs. Price: $32.10 Buy:

These fine M715 & M725 "5/4-ton" trucks are great conversion candidates, and make even more excellent vehicles when converted to Small or Big Block Chevy power.

The Adapters
These plate style adapters are cast and machined of a high-grade aluminum alloy. Included are the GM bellhousing locator / throwout sleeve, seal and hardware.

GM Bellhousings
GM bellhousings typically feature either a 4-11/16" rear face bore or a 5-1/8" rear face bore, the latter typically only from Chevy / GM trucks from 1968-1991. Our adapter versions are available for both. If you are uncertain of your bellhousing bore, add our #BR4 spacer ring that can be used or omitted to cover either situation. The ring is easily returnable for credit if not used in the installer's application.

Installation
The adapter is easily and quickly installed onto these transmissions and no change of input gear or other transmission internals are typically required.

Choosing Your Pilot Bushing
Depending on the engine you choose, your pilot bushing will vary. See our Pilot Bushings page to choose this critical component for your conversion.

Clutch Release
Both factory mechanical and add-on hydraulic clutch release systems can be made fully compatible with this conversion. Individuals with mechanical releases should use Novak's #RAGM release fork.

Individuals wishing to upgrade to a hydraulic system can use Novak's #HCR3 hydraulic clutch retrofit assembly in conjunction with firewall and pedal changes as necessary.

Generation I through Generation III Chevy V8 engines are popular choices as are the Chevy V6s. The Buick V6 is also a good choice. Even Big Block engines are candidates for this swap, due to the enormous strength of the T18 transmission.

Engines & Engine Mounting
The Novak engine mounting system offers the best designs on the market for strength, ease and flexibility of installation. Whether you are installing a classic Small Block, a V6 or a Generation III powerplant, we've got you covered.

In any scenario, it is critical that the engine be installed (as the Jeep engines usually are) with an offset of 1" to 1-1/2" to the driver's side. Other engine mounts on the market - especially the bolt-in versions - do not take this into account and make other placement decisions for

the installer that do not take the full powertrain into account. Novak offers what we have found to be the most intelligent engine mounting system for Jeeps available, allowing the installer to make an easy and satisfying decision as to powertrain placement with the new engine, Borg Warner transmissions and Dana 20 transfer case all considered.

Novak's MM Series engine mounts, featuring excellent vibration dampening, superior strength and impressive adjustability - adjustable even after the engine is installed.

 

Driveshafts
No driveshaft modifications are required and the original transmission and transfer case location is retained.

The classic Chevrolet bellhousing, with the four-bolt rear pattern. Buick, Olds, Pontiac and other bellhousings with the same rear face are equally compatible.

Axles
Use of factory axles is completely encouraged. A Dana 70? Oh, yes.