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66-67 327 w/4-spd Conversion Direct Fit Aluminum Radiator & Fan Combo (427 Style)
Item #:
RA-291
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As low as $1,339.99
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Upgrade your 1966-1967 327 Corvette's cooling system with the larger 427 style radiator. This new 24" aluminum radiator and fan package is designed to substantially increase cooling capacity while mounting into the original 327 18" radiator core support. Our conversion radiator features pins for the lower mounts just as your 327 Corvette was originally designed. Radiator mounts on the top with side brackets that attach to existing holes in your Corvette's radiator support.

Direct Fit radiators are completely manufactured and assembled right here in the United States. Along with that comes the quality that you would expect from a company that takes pride in turning out Corvette radiators. Each Direct Fit Corvette radiator begins life as an aluminum core with two 1" wide cooling tubes. This configuration more than doubles the cooling capacity by increasing the "tube to fin" contact area. This can only be achieved with an aluminum radiator since the aluminum material does not dramatically affect the radiators weight. Tanks are press formed and inlet/outlets are correctly configured for a drop-in installation. Each core is then brazed in a controlled atmosphere furnace; which eliminates the need for epoxy, ensuring leak free, trouble free service for many years to come.

Conversion package includes dual electric SPAL fans which eliminate the need for the stock fan shroud and engine driven fan. The kit also includes one SP195FRH and one SPFH relay harness. Increasing cooling performance while eliminating the power rob of an engine driven fan.

Note: This is a custom package and modifications are required to complete installation. Due to the length of the radiators, the horn relay and voltage regulator must be relocated. Cars with air condition will require custom lines to the condenser. Custom radiator hoses will be required. Made in USA. Zip also has radiators for LS conversions - contact a Zip salesperson for more information.

Direct Fit radiators are available in your choice of natural or black ice coated. Black Ice is an OE-style epoxy finish designed to turn an aluminum radiator into a factory look-alike without affecting cooling performance. Specify radiator finish when ordering. Additional costs will be incurred for black ice coated.

Dual fan kits are designed to turn on at 195F based on the output of the temperature sensor. Some aftermarket air condition systems prefer the fans to be turned on when the air condition system is engaged. Forcing the fans to turn on in an effort to keep the air condition system functioning at its highest level. For air condition equipped Corvettes, if the desire is to turn the fans on when the air condition is engaged, an additional SPAL relay wiring harness kit must be purchased. See Zip # RA-351 to complete the installation for an air condition engaged dual fan system.

Dewitt's Direct Fit aluminum radiators are warrantied to be free from defects in materials and workmanship for as long as you own the Corvette in which it was originally installed. This warranty is extended only to the first retail purchaser of any such radiator. Proof of purchase must be provided from an authorized dealer. If the radiator is used in any racing application this warranty is considered null and void. Radiators used without an adequate proportion of premium quality antifreeze coolant and distilled water are not covered by this warranty. DRI radiators require a correct proportion of quality coolant, which contains aluminum corrosion inhibitors in the formula and distilled water. All Corvette cooling systems must include a radiator pressure cap with the proper pressure rating. Distilled water and premium antifreeze must be used with all Corvette aluminum radiators!

Dewitt Item Number 32-4239025M, 32-4139025M, 4339025M, 4339025M-C

This item is proudly Made in the USA

Installation difficulty: 3

Our technicians have determined that the installation difficulty level of this item is a 3 on a scale of 1-5. Read more about our install ratings here.

Technical Articles:

Model Years

More Information
Generation C2
Model Year 1966, 1967
Additional Item Information

Dewitt

Based in Michigan, DeWitts Radiator is the only aftermarket radiator manufacturer in the US which owns an aluminum Nocolok blazing furnace. With a twelve-person crew, DeWitts builds custom and direct fit radiators for 1955-present Corvettes from start to finish at their Howell, MI plant. No epoxy is used in the making of their radiators, and their construction methods eliminate seams and possible leak points. Their Lifetime Warranty is industry leading, and Zip only recommends DeWitts Radiators to our customers.

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