Page 210 - 2021-22 Auto Performance_Hot Rod and Early Muscle
P. 210
HERE’S A COOL SUGGESTION:
wetting agent.
Direct Fit Radiators
bolt in place of the stock
radiator and provide a vast
improvement over stock cool-
ing. Some applications have
internal oil coolers for auto-
matic transmissions. Available in the Standard series with 1" tubes or the Pro-Series with 1-1/4" cooling tubes.
Ford Universal Radiators Ford* radiators have two
rows of 1" diameter cooling tubes. Outlets are top right, bottom left.
Part No.
General Motors
Description
Part No.
GRI126182X
GRI126241X
GRI126242X
GRI126272X
Description
19" x 22" x 3"
16" x 27-1/2" x 3"
19" x 27-1/2" x 3"
19" x 31" x 3"
GRI8-00008
GRI8-00013-LS
A-G Body, LS1/LS2 And Early LS3,
1-1/4" Tubes Without Trans. Cooler, 28" Wide Core
1967-81 C/K Series Trucks, Early LS1/LS2 And LS3, 1-1/4" Tubes Without Trans. Cooler, 28" Wide Core
* Will also fit some Mopar applications.
Pro-Series Universal Radiators Two rows of 1-1/4" diameter
cooling tubes for greater cooling.
Part No. Description
GM – Outlets Top Left, Bottom Right
GM Universal Radiators GM radiators have two
rows of 1" diameter cooling tubes. Outlets are top left, bottom right.
GRI155202X
GRI155222X
GRI155241X
GRI155242X
GRI155272X
19" x 23-1/2" x 3"
19" x 26" x 3"
16" x 27-1/2" x 3"
19" x 27-1/2" x 3"
19" x 31" x 3"
Part No.
GRI125182X
GRI125202X
GRI125222X
GRI125241X
GRI125242X
GRI125272X
Description
19" x 22" x 3"
19" x 23-1/2" x 3"
19" x 26" x 3"
16" x 27-1/2" x 3"
19" x 27-1/2" x 3"
19" x 31" x 3"
Cooling System Update
When it's time to update the cooling system with a new radiator, there
replaced, a new cap should be used. If the wrong pressure cap is used on a new system or the rubber seal is worn out, the entire cooling system will be affected. The more pressure that can be held in a closed system, the higher the boiling point. It is recommended to run the highest pound pres- sure cap the system can handle. For every pound of pressure in a closed system, the boiling point is increased by 3°F. Thus a 16psi. cap increases the boiling point to 260°F. If the cooling system cannot hold pressure, en- gine heat builds more quickly, causing the engine to run hot much sooner than normal. This means that an improperly sealed system will boil prema- turely. Another often overlooked item is the thermostat. If a thermostat warm up period can result in the creation of engine sludge, increased - terior heating system will take longer to operate. The last item that needs enough coolant the system will be totally inadequate. One reason for lack - lower RPM's, the water pump is being driven at a slower speed, causing a
208 2021 HOT ROD AND EARLY MUSCLE
