Chevrolet Generation I & II V6 & V8 Universal MMX Series Engine Mounts



Our MMX series of mounts offer the most strength, adjustability, and modularity available for Chevy Small Block V6 & V8 engines, and Big Blocks in Jeeps.

Two kits are available for either narrow or wide frame style Jeeps, as follows:

Chevrolet Mounts for Narrow Frame Jeeps

Chevy Engine Mounts for Jeeps

Kit MMX-NC1, engine mounts, Chevrolet Gen. I & II V6 & V8 into narrow frame Jeeps

  • All CJ models
  • FC Series
  • Commando Models
  • Utility Trucks & Wagons
  • other vehicles with parallel frame rails and an inside to inside frame width of 25" - 27-1/2"

Kit contents:

  • Frame platform sets, sliding pairs
  • Frame anchor brackets
  • Upper urethane bushings
  • Lower urethane bushings
  • Engine block plates
  • Fastening hardware
  • Instructions
"Low Hood" Jeeps don't have the clearance needed for tall Vortec V6 and some V8 front accessories. One must install the lower profile intake assemblies (car style or aftermarket) for hood clearance and / or make accommodations with body lifts, though not always ideal.

Chevrolet Mounts for Wide Frame Jeeps

Chevy SBC BBC Engine Mounts for Jeeps

Kit MMX-WC1, engine mounts, Chevrolet Gen. I & II V6 & V8 into wide frame Jeeps

  • YJ Wrangler
  • FSJ Trucks, Wagoneers and Cherokees are recommended)
  • other vehicles with parallel frame rails and an inside to inside frame width range of 27-1/2" to 31"

Kit contents:

  • Frame platform sets, sliding pairs
  • Frame anchor brackets
  • Upper urethane bushings
  • Lower urethane bushings
  • Engine block plates
  • Fastening hardware
  • Instructions


Ease of Installation

These mounts are weld-in style and detailed instructions will guide to an ideal installation.


The Novak mounts feature thick 3/16” laser cut and CNC bent steel construction. Engineered using advanced CAD modeling and real world testing, these mounts have shown to handle even the wildest V8.

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.


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


The design on these mounts allows outstanding placement freedom in most any vehicle that meets the width requirements and has parallel frame channels. They have a large adjustment range for placement in the vertical, left-right offset, and longitudinal directions.

Engine Mount Finish

All parts except the frame brackets are zinc coated for resistance against corrosion. As the frame brackets are welded to the frame, any finish on the frame side brackets as well as the frame would be burned. The welded channels will need to be finished but you may enamel, powder coat or otherwise finish the bracketry and adjacent frame area to your own style.

CJ7 Jeep with Chevy Small Block ZZ430 V8

Customer A. Blackburn shows world-class work with his CJ7 and Chevy ZZ430, in front of an SM465 transmission and the factory Dana 300 transfer case.

Applications & Compatibility

Applicable Engines

  • Chevrolet Small Block V8, Generation I-II, 1955-1998+ (265-400, LT1, etc.)
  • Chevrolet Small Block V6, Generation I-III, 1978-2007+ (200-262, 4.3L, etc.) The "Low Hood" Jeeps really don't have the clearance needed for tall Vortec V6 intake manifolds unless a 3/4" - 1" body lift is installed and air intake modifications are done. Otherwise, the Buick V6 can be considered here.
  • Chevrolet Big Block V8, 1965-2007+ (409-454, 7.4L, 8.1L, etc.) - a real kick, but rarely appropriate for any of these smaller Jeeps this side of the CJ7 & CJ8.
  • Chevrolet I6 1962-1988 (250, 292) (if factory or specially requested Novak "V" brackets are installed on the block) - long and not a good fit for any short-hood Jeeps. They fit only in 1972-1986 CJ's. V6 / V8 swaps are far more common, but the Chevy I6 is an option for those who are into them.
  • Chevrolet Diesel V8 (6.2L, 1982-1993. 6.5L, 1992-1999) - probably only for FSJ Jeeps

Related Products

Headers for Jeep Swap Engines
Engine Mount Bushings, spares
Radiator for GM Chevy engines in Jeeps
Pilot bushings for Jeeps
Novak's Legacy Engine Mounts

Installation Requirements

Old Mount Removal

Unbolting or cutting is required to remove the factory frame mounts for factory Jeep engines. This process will vary from model to model. you will want to completely remove and smooth the surface of your frame rails for a nice fitment of the new engine mount channels to your frame.

Engine placement in these Jeeps should consider the following points:

  • Left-right offset location is similar to factory at ~1-1/4" to the driver's side
  • Avoid installing the engine too low (axle clearance and other issues)
  • Avoid installing the engine too high (transmission tunnel interference, etc.)
  • Set your engine to 4-7 degrees of tilt rearwards, like the factory engine & powertrain
  • It is usually best that Chevy and Gen III+ V8 engines install approximately 3" further forward, using the back of the engine block face as the datum
  • When mocking up your engine installation location, pay special attention to radiator and fan clearance.
  • Firewall modifications are not expected.


Driveshaft length changes may be required. Chevy engines (with their rear distributors) can install around 3" further forward than AMC engines (using the back face of the block as the datum point) for exhaust clearance, firewall access, etc.

Some installers, concerned about the expense of new or modified driveshafts, attempt to let the existing driveshafts dictate engine, transmission and transfer case location, often to the detriment of the project. Our recommendation is to prioritize the correct position of drivetrain components over saving a few dollars which is usually regretted in the long run with compromised positioning.

Jeeps that require extensive travel or specialty-built driveshafts have this option available through several fabricators across the nation. These are normally specified after placement of the new transmission and measured at vehicle ride height. As the rear driveline gets shorter, it is often advantageous to us a Double Cardan or “CV style” rear shaft with the correct geometry at the axle to minimize vibrations and possible binding.

Also See

Predetermined Bolt-In Mounts vs. Novak #MMXs

We at Novak receive many compliments on our engine mounts. Many customers find that it is liberating to install their engine where they determine is the best place.

Bolt-in mounts have their place, but a complaint we receive about other companies' predetermined bolt-in mounts is the lack of freedom in placement for the varying situations each installer encounters with their Jeep. Installing an engine based on what may have been a decent location for the manufacturer's design project often presents restrictions not present with a pair of our mounts. They offer the installer more options.

Image Gallery

Chevy V8 install into a YJ Jeep

Customer R. Fett shows a clean install of a Small Block Chevy into his YJ Wrangler

Chevy 350 in a CJ7

B. Lippert's CJ7 with a terrific Chevy 350... all themed in red.

Jeep CJ with ZZ430

Another view of this outstanding ZZ430 install into a CJ.