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GM Engines Conversion Radiator
for
Full Size Jeep SJ's, 1962-1991
This radiator features two, one-inch aluminum rows and a cross-flow, double-pass design. The integrated brackets will position the radiator in the optimum position. The right (passenger side) inlet / outlet design is generally a better fit for GM Gen III+ engine hose routing.
This radiator is 28 " wide by 19 " tall x 2-1/4" thick.
The side bracketry matches the existing holes provided in the factory Jeep radiator supports with no drilling required.
For Chevy Gen I-II Small Block Engines
This is our Chevrolet Small Block and Big Block version of our FSJ radiator. It features a top drivers inlet and bottom passengers outlet.
Kit contents:
- Radiator
- Radiator cap, 16lb
- Plugs, brass, 3/8" NPT
- Fitting, barbed, 1/4 x 1/8 NPT, overflow
- Anode, sacrificial
For GM Gen III+ LS Vortec Engines
This is our GM Gen III+ version of our FSJ radiator. It features a top passenger inlet and bottom passengers outlet. NOTE: Please make sure to measure the width of the radiator before ordering.
Kit contents:
- Radiator
- Radiator cap, 16lb
- Plugs, brass, 3/8" NPT
- Fitting, barbed, 1/4 x 1/8 NPT, overflow
- Anode, sacrificial
For Ford & AMC Engines
This is our AMC and Ford V8 version of our FSJ radiator. It features a top drivers inlet and bottom passengers outlet.
Kit contents:
- Radiator
- Radiator cap, 16lb
- Plugs, brass, 3/8" NPT
- Fitting, barbed, 1/4 x 1/8 NPT, overflow
- Anode, sacrificial
Coolant & Water Wetter
Your Novak radiator is aluminum, and the coolant needs to suit the radiator — not the cast-iron radiator your donor engine may have originally run behind. We recommend Zerex™ G05, a HOAT (Hybrid Organic Acid Technology) antifreeze that protects aluminum while staying safe on any iron or copper parts elsewhere in your cooling system. It comes premixed 50/50, so there’s no diluting a concentrate or guessing a ratio.
Red Line Water Wetter is a surfactant additive that reduces the surface tension of the coolant, letting it make better contact with the metal in your radiator and engine for improved heat transfer. It’s an inexpensive upgrade for a Jeep that works hard at low speed or off-road.
Both can be added to your radiator order with the dropdowns above, along with our polished stainless overflow tank.
Applications & Compatibility
Compatible Jeeps
These assemblies are designed to fit Jeep Full Size Truck, Wagoneers, Grand Wagoneer, and SJ Cherokees.
Compatible Engines
These radiators are compatible with their respective engines, as listed above. Note that we may contact you upon ordering to verify your set-up.
Related Products
Installation Requirements
Typical mechanics hand tools along with the appropriate hoses, clamps and coolant required with a normal radiator swap. After installing this upgrade radiator, we recommend that the installer should verify fan-to-radiator clearance and engine mount integrity before operating the Jeep.
Radiator Warranty Policy
Our radiators come with a 1-year / 100% warranty for defects in materials or workmanship, which is prorated and Novak will cover the cost as follows:
- 1 year, 100%
- 2 years, 75%
- 3 years, 50%
- 4 years, 25%
The above does not include incoming shipping of your radiator to Novak.
All prorated coverage above is measured from the original purchase date of the radiator, and a warranty replacement does not reset that date. If a replacement radiator is sent out 1.5 years after your original purchase and that replacement fails a year later, coverage is based on 2.5 years from the original purchase (75%) — not on the 1 year since the replacement (100%).
Coverage can be denied if it is determined that:
- Abuse has occured; no radiator can withstand shoddy installation or debris striking the radiator
- Electrolysis has occurred due to failure to ground the radiator to the frame
- Overpressured. We do not recommend exceeding 16psi on the cap
Our overall warranty and other policies are found here. We strongly recommend you educate yourself about cooling and the related topics here before taking on this or any custom vehicle cooling project.