It depends on the application. More fins per inch generally increases the heat rejection capability of the radiator, but also increases the pressure drop through the radiator. The radiator needs to be properly designed to meet your specific engine cooling requirements.
Griffin doesn't recommend a 4 row radiator for street use; because of high air side restriction, excessive fan power would be required to meet idle requirements. All or most of our street radiators will use one of our 2 row 1" or 2 row 1 1/4" tubes. However, if you specifically need a 3 or 4 row aluminum radiator, Griffin has the capability to custom build one for you.
Griffin recommends cradle mounts but will weld brackets to the radiator if specifically requested by the customer. This will require an additional charge.
Since most racers don't use a drain, Griffin does not put one on the race radiators. Also, given the variety of chassis, it is impossible to find one location that would suit every application.
Griffin uses 3003 as a base alloy. Our braze alloy is either 4004 or 4104. These alloys contain a significant amount of magnesium making them stronger than any alloy that can be used in a CAB or COB (also known as NOCOLOC) process.
