1967-1987 C/K Series Trucks Blazer Suburban LS and LT 20.75 Inch Tall Radiator
When swapping an LS or LT powertrain into a 1967 to 1987 C/K Series C10, K10, Blazer or Suburban, managing engine temperature under load poses one of the most critical concerns for classic truck builders. This 20.75 inch tall radiator installs directly to factory mounts for automatic transmissions and increases coolant volume beyond stock levels to maintain stable temperatures during steep climbs and sustained towing. Crafted from corrosion resistant aluminum with precision fin geometry, it promotes uniform heat exchange across the entire core and protects vital engine components on extended highway runs and off road trails.
Precision Core Height and Fin Geometry for Stable Engine Temperatures
The radiator's 20.75 inch tall core expands coolant volume while its precise fin spacing maximizes surface area for efficient heat exchange. Uniform fin geometry exposes every coolant channel to airflow, preventing hot spots that can compromise head gaskets or bearings. This design maintains even temperatures during steep climbs, slow speed towing, and prolonged highway runs. By smoothing out thermal peaks, the tall core protects critical engine components under varied load conditions.
All Aluminum Construction for Fast Heat Transfer and Light Weight
Built entirely from aluminum, this radiator delivers rapid heat rejection thanks to the metal's excellent thermal conductivity. Aluminum also forms a natural oxide barrier that resists corrosion, ensuring the unit performs reliably over many seasons. Its light weight reduces front end mass, easing stress on mounting brackets and improving suspension response. The bare metal finish further aids cooling by avoiding insulating surface coatings that could trap heat.
Expanded Coolant Capacity Designed for Heavy Tow and Extreme Heat
With a core taller than factory units, this radiator holds significantly more coolant to buffer against sudden temperature rises. Whether hauling a trailer up mountain passes or crawling over rough terrain, the extra volume dampens thermal spikes and sustains engine stability. In stop and go traffic or during summer heat waves, the increased reservoir prevents overheating and supports extended maintenance intervals, safeguarding critical components from premature wear.
Bare Metal or Epoxy Black Coating Options for Durability and Style
Select the bare aluminum finish to maximize heat transfer or opt for the black epoxy coat to protect against road debris, moisture, and corrosion. Each option is applied in house to guarantee even coverage without blocking airflow to the core. The epoxy layer adds a durable barrier while preserving the radiator's slim profile. Both finishes simplify cleaning and deliver a refined look that complements classic and modern engine bays alike.
Trust MuscleRods to keep your engine cool and for the same radiator but with fans see our 1967-1987 GM Truck Radiator 20.75" Tall (Automatic Transmission) with Fans - HD Cooling.