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Chevrolet Generation I & II V6 & V8 Engine Mounts

for

TJ & LJ Wrangler Jeeps

Novak's engine mounts for the Jeep TJ & LJ Wranglers provide great strength and a precise GM Gen I & II Small Block V8 and V6 engine installation.

Chevrolet Small Block V8 Version

Small Block Chevy V8 Engine Mounts for TJ LJ Wrangler Jeeps

Kit MMTJ-C1, engine mounts, Chevrolet Small Block V8 engines to TJ & LJ Jeeps, weld-in style, prepositioned

Kit contents:

  • Frame platform sets
  • Upper urethane bushings
  • Lower urethane bushings
  • Engine block plates
  • Fastening hardware
  • Instructions

This version of our TJ / LJ mount is for Chevy Small Block V8 engines, entirely replacing the existing Jeep I4 or I6 frame mount.

Removal of the factory frame mounts for both 2.5L I4 and 4.0L I6 engine Wranglers is required. This is best done with a separating disc, plasma cutter, torch, or reciprocating saw, followed up by a grinder or flap-wheel.

TJ Chevy Mounts welded in
The Novak frame bracket, as welded to the Jeep frame rail

Chevrolet Small Block V6 Version, Replacing I4 Engines

Chevy V6 Engine Mounts for TJ LJ Wrangler Jeeps

Kit MMTJ-CV6, engine mounts, Chevrolet 4.3L V6 engines to TJ Jeeps, bolt-in, replacing the I4

Kit contents:

  • Frame platform sets
  • Upper urethane bushings
  • Lower urethane bushings
  • Engine block plates
  • Fastening hardware
  • Instructions

This version of our mount allows you to retain your 2.5L I4 engine frame horns when using a Chevy V6 engine. Trimming of these factory frame horns is required, then they will be bolted through the top then drilled and bolted or optionally plug-welded at the flanks.

TJ Wrangler I4 2.5L frame bracket replacement
The Novak MMTJ-CV6 frame bracket, as attached to the Jeep frame horn and the engine

Features

Ease of Installation

These mounts are available in either weld-in style or bolt-in style, and detailed instructions will guide to an ideal installation.

Strength

The Novak mounts feature thick 3/16” laser cut and CNC bent steel construction. Engineered using a welded box design geometry to provide maximum strength and assure that they will survive even the wildest V8's. When the option is available, we recommend the weld-in version for strength, simplicity and just a cleaner installation. If a welder is not available the bolt-in is an excellent option saving that step.

Vibration Isolation

Each mount kit comes with our high-grade urethane isolators that are specified for that ideal balance of isolation and firmness with the power of modern engines. Substantial 5/8” through bolts capture the assembly. Replacement bushing sets are available below should replacement ever be needed.

Compactness

Geometry of the mounts is compact to provide clearance for all stock components including steering shaft with its pillow block and the recommended exhaust headers below.

Engine Mount Finish

As the mounts are welded to the frame, any finish on the frame side brackets as well as the frame would be burned. you may enamel, powder coat or otherwise finish the bracketry and adjacent frame area to your own style. Engine plates are coated in a rust resistant finish but may also be painted.

Applications & Compatibility

Compatible Jeeps

  • MMTJ-C1: These mounts fit all 1997-2006 Jeep TJ / LJ Wranglers
  • MMTJ-CV6: These mounts fit all 1997-2006 Jeep TJ Wranglers originally equipped with the inline 4 only

Compatible Engines

  • MMTJ-C1: These mounts will fit the Chevrolet Small Block V8 engines, Generation I-II, 1955-1998+ (265-400, LT1, etc.)
  • MMTJ-CV6: These mounts will fit the Chevrolet Generation I & II V6 Engine only.

Related Products


Radiator for Chevy engines in TJ LJ Wranglers

#K-TJ10H, Radiator, KryoFlow II, Jeep TJ Wrangler with GM Gen I-II Engines. Aluminum, high-efficiency crossflow. TD/BP

Novak's KryoFlow II radiator for TJ and LJ Wranglers with Chevrolet V6 & V8 engines uses the limited grill space for maximum cooling. These radiators are extensively tested and endlessly improved over their many years on the market. An electric cooling fan is also available, adjacent. Learn more.

Electric cooling fan for TJ Jeeps

Kit FX3300-T, fan and shroud assembly, electric, maximum performance, YJ / TJ KryoFlow version

This is our recommended high-performance #FX3300-T fan and shroud kit, rated at 3300 CFM. Their durability and power are respected across the planet, whether in an exotic sports car, kit car or your Jeep. Best used in conjunction with a fan controller relay kit, adjacent.
Order with your radiator and we'll attach them for you and ship together.

Electric fan controller sensor relay kit

Sensor kit, engine coolant temperature, with wiring harness, relay and terminals, switches at 195F, #FC-FRH195

This is a terrific standalone temp sensor, controller and relay kit for our FX series fans. It's best suited for classic engines that don't have PCM fan control. It features a 30 amp & 40 amp fuse option. Switches on at 195F.

Electric fan controller sensor relay kit

Sensor kit, engine coolant temperature, with wiring harness, relay and terminals, switches at 195F, #FC-FRH185

This is a terrific standalone temp sensor, controller and relay kit for our FX series fans. It's best suited for classic engines that don't have PCM fan control. It features a 30 amp & 40 amp fuse option. Switches on at 185F.

Chevy Small Block V8 headers for Wrangler Jeeps

#CC158C, Headers, exhaust, Chevrolet Gen I & II Small Block V8 engines, short, block hugger, silver ceramic

These are our recommended headers for classic Chevy V8's in Wrangler Jeeps. They stay out of the way of the surrounding components, flow a lot of exhaust and this ceramic coated version will look fantastic for years to come. Read more about them, here.

Chevy Small Block V8 headers for Wrangler Jeeps

#CC158, Headers, exhaust, Chevy Gen I & II Small Block V8 engine, shorty, block hugger, natural steel finish

These are our recommended headers for classic Chevy V8's in Wrangler Jeeps. They stay out of the way of the surrounding components and flow a lot of exhaust.Read more about them, here.

Pilot bushings for Jeeps

Pilot Bushings for your Jeeps

Many engine conversions will be up against manual transmissions. We offer pilot bushings for just about all of the combinations that we've encoutered over the years. See them here.

JK Tachometer Emulator

Module, crank position emulator for CAN Bus Jeep tachometers with GM engine conversions, #E-TX

Convert your GM tach signal to one readable by the Mopar Jeep PCM, which will operate your tach for you. Read more about these innovative modules.

Engine Mount Bushings, spares

Kit #MM-B, isolators, Novak MM & MMX engine mounts, upper and lower replacement bushings

While we expect our urethan bushings to last a good long time, you can these spares into your Jeep's toolbox just in case. Our engine bushings are backwards compatible with Novak engines mounts going as far back as the 1970's.

Shifter Kits for New Process Transfer Cases

As this combination will frequently be paired with Jeep New Process chain drive transfer cases (NP231, NP242), this shifter kit will make the conversion go not just smoother, but will improve your shifting action and reliability significantly over factory. Read about them here.

GM Fuel Injection Pump for Wrangler TJ LJ Jeeps

GM Fuel Injection Components for Wrangler Jeeps

Take advantage of your Jeep fuel pump module, while upgrading it to feed your new GM engine. There are two kits available depending on your engine situation. Learn about them, here.


Installation Requirements

Engine Placement

We have predetermined engine placement for the installer. There is a small window in which the GM Gen. I & II engines can properly fit into the TJ Jeep, and we've done this design legwork already.

Read Novak's detailed and most recently updated TJ Gen I & II conversion instruction package as provided with our engine mounts.

Steering Bracket

These mounts feature an integrated platform for the reinstallation of your steering shaft carrier bearing bracket, as you may be removing the factory version. If installed correctly, the safety of your steering system will meet or exceed the factory specifications. Whether and how this is done varies with the original engine in your Jeep and the type of mount selected. Some (but not all) models use an additional spacer bracket that is supplied.

Also See