The Cold Case GMT558ALSSK is an aluminum radiator and Super Duty cooling fan kit for 1967-1976 Chevrolet and GMC trucks set up for an LS engine swap. It pairs the GMT558ALS 2-row radiator with a Super Duty electric fan kit and shroud, using two 1.25 inch tubes and 16 corrugated fins per inch with 100 percent TIG-welded construction and polished OE-style tanks, and has a 1/4 inch NPT steam port. It is meant to be used with a separate external transmission cooler.
- Type: aluminum radiator and Super Duty fan kit (LS swap)
- Included: radiator plus a Super Duty electric fan kit and shroud
- Core: 2-row, two 1.25 in tubes, 16 corrugated fins per inch
- Construction: 100 percent TIG-welded aluminum, polished OE-style tanks
- Core size: 28.5 in W x 18.4 in H
- Overall size: 34.21 in W x 18.82 in H x 3 in D
- Hoses: 1.5 in upper, 1.5 in lower; 1/4 in NPT steam port
- Transmission cooling: use an external transmission cooler
- Part number: GMT558ALSSK
Vehicle Applications
Direct fit on the following (LS swap):
- 1967 Chevrolet C/K Pickup
- 1968 Chevrolet C/K Pickup
- 1969 Chevrolet C/K Pickup
- 1970 Chevrolet C/K Pickup
- 1971 Chevrolet C/K Pickup
- 1972 Chevrolet C/K Pickup
- 1973 Chevrolet C/K Pickup
- 1974 Chevrolet C/K Pickup
- 1975 Chevrolet C/K Pickup
- 1976 Chevrolet C/K Pickup
- 1967 GMC C/K Pickup
- 1968 GMC C/K Pickup
- 1969 GMC C/K Pickup
- 1970 GMC C/K Pickup
- 1971 GMC C/K Pickup
- 1972 GMC C/K Pickup
- 1973 GMC C/K Pickup
- 1974 GMC C/K Pickup
- 1975 GMC C/K Pickup
- 1976 GMC C/K Pickup
FAQ
What is included in the GMT558ALSSK kit?
The GMT558ALS LS-swap radiator plus a Super Duty electric fan kit and shroud.
What vehicles does it fit?
1967-1976 Chevrolet and GMC trucks set up for an LS engine swap.
Does it have a transmission cooler?
No. This LS-swap radiator is meant to be used with a separate external transmission cooler.
Does it have a steam port?
Yes. It has a 1/4 inch NPT steam port.

