Specifications

16
radiators, cooler lines & fuel systems
Spal Fan Kits: The Spal fans we offer are the high performance, curved bladed pusher
or puller fans. These 16” fans are 16.3” tall, 15.75” wide, and 3.39” deep at the fan motor.
The fans are rated at 2360 CFM and being that they are pre-shrouded, they are ideal for
cooling larger engines. Our fan kits come complete with the needed wiring harness, which
is compatible with both positive and negative ground vehicles. The 3/8” pipe thread send-
ing unit is designed to turn the fan on at 185 degrees and off at 170 degrees.
716670 - Puller Fan Kit
716671 - Pusher Fan Kit
Radiator Cap: The normal operating temperature on most engines is 180 to 200
degrees which generates a pressure of 8-12 pounds. This is true for both carbureted
and fuel injected engines. To blow the cap of the radiator the coolant would have to be
270 degrees. Hopefully, the engine would be shut down prior to getting this hot,
keeping the coolant inside the radiator. But for added protection, we offer a new 22 lb.
radiator pressure cap. This cap works on all of our radiators. P/N 716679.
Transmission Cooler Lines Kit: As you finish up a drivetrain conversion, there are
always a few last minute items that need attention. One of these is the transmission
cooler lines. You can surely bend up custom ridged cooler lines and route them up
to the radiator or splice into your old lines if your vehicle has a stock automatic.
We’ve found that the ridged lines are sometimes a pain to fit properly, and splicing
into your stock lines may not always be the cleanest installation. We now offer a flexible
stainless steel hose kit. These hoses are simple to route and easily installed onto the
radiator. The seven foot long hoses are long enough to fit most applications while having a
bit of extra hose to allow for body and frame flex. Our kit includes two 7’ stainless steel outer
braid lines with Teflon inner tubing. The ends have dash 6 female A.N. fittings that are pre-crimped
to the hose ends. The kit includes two 1/4” MPT to dash 6 Male fittings for aluminum Rad-a-kool
radiators, and two 5/16” inverted flare to dash 6 Male fittings for the transmissions.
P/N 23-1500 - fits TH350 and TH400 transmissions.
P/N 23-1501 - fit 700R and 4L60E transmissions.
Radiator Recovery Can: This canister will accumulate any “overflow” from the radiator cap. The accumulated
fluid will then be pulled back into the radiator once the engine has cooled. P/N 716672.
Radiator In-Line Temperature Sensor Adapters: We offer three upper radiator hose in-line temperature
sensor adapters. These adapters allow you to retain your vehicles stock temperature sending unit and stock
gauge. These units are offered in either 1-3/8” or 1-1/2” hose diameter as to fit most block and radiator
configurations. The sensor hole is either 3/8” or 1/2” on the 1-3/8 adapters or 1/2” on the 1-1/2” adapter.
P/N 716673 - 1-3/8” with 3/8” sensor hole
P/N 716673A - 1-3/8” with 1/2” sensor hole
P/N 716674 - 1-1/2” with 1/2” sensor hole
FUEL SYSTEMS
The stock fuel tanks are sufficient for all V6 and V8 engine conversions. If additional fuel is needed, there are several aftermarket
fuel tanks available to increase the fuel storage capacity. The fuel can be supplied to the engine in two ways: an electric fuel pump
and a mechanical fuel pump. The mechanical pump is normally part of the engine and, at times, does create clearance problems.
When the mechanical pump cannot be used, the alternative is an electric pump. On installations that are installing a fuel injected
engine, you will be required to install the corresponding high pressure type fuel pump. These high pressure pumps are available
from your local performance automotive warehouse. Later model vehicles have the fuel pump installed in the fuel tank. You can
retain this fuel pump as long as it will provide the correct fuel pressure for your engine choice. You can also use a aftermarket in-
line fuel pump if desired. The two fuel pumps listed below are Airtex brands in-line fuel pumps:
E8094 12-17 psi for TBI engines
E8228 100-125 psi for MPI engines