Radiator for LS and LT Swaps in 1963-1966 C/K Series Chevy GMC Trucks
If you are planning an LS or LT swap in a 1963 to 1966 C or K series Chevy or GMC pickup this radiator addresses the precise fit challenges of manual transmission layouts by matching stock rails and hose locations without trimming. Built from TIG welded aluminum tanks and a full aluminum core the assembly channels coolant evenly through a fin pack engineered to shed heat rapidly while resisting corrosion in salt prone or moisture heavy environments. Factory aligned mounting tabs for C10 C15 K10 and K15 frames maintain required clearance around the heater box and brake booster to avoid interference during installation. This direct fit solution simplifies the plumbing process and sustains stable engine temperatures under towing loads or spirited runs.
Precision TIG Welded Aluminum Assembly
The radiator tanks and core are joined using a fully TIG welded process that creates exceptionally clean joints and uniform heat distribution. This method focuses the welding arc to fuse thick aluminum panels deeply while minimizing distortion, preserving original frame clearance around the heater box and brake booster. Rigorous weld inspection ensures every seam withstands repeated vibration and thermal expansion cycles from LS and LT power output. By avoiding weakening of the tank walls, the assembly resists stress cracking and maintains leak free operation under heavy towing loads or spirited driving. Locally made fabrication upholds tight tolerances and consistent quality for each radiator.
Optimized Core Design for Rapid Heat Transfer
The full aluminum core incorporates an array of closely spaced tubes and fins crafted from high quality aluminum to channel coolant evenly from end to end. This layout maximizes surface area exposed to ambient air, enabling quick shedding of engine heat even under towing demands or hill climbs. Lightweight aluminum reduces front end mass and helps preserve the handling balance of classic C and K series trucks. Uniform coolant flow prevents hot spots that can lead to local stress, thereby sustaining stable engine temperatures during extended runs or sudden shifts in load. Consistent performance enhances durability and driver confidence in demanding conditions.
Protective Aluminum Oxide and Epoxy Finish Options
Each radiator is offered in a natural aluminum state that forms a protective oxide film or in an optional black epoxy finish applied in multiple layers. The oxide layer bonds tightly to the metal surface, blocking moisture and road treatments from penetrating aluminum pores. In contrast, the epoxy coating undergoes oven curing to deliver a durable surface that resists chipping and fading in harsh environments. Both finishes undergo strict inspections to confirm even coverage and strong adhesion before assembly. These options allow restorers to choose a finish that matches both aesthetic goals and corrosion defense needs.
Seamless Direct Fit Installation for 1963 to 1966 Chevy GMC
Engineered to align perfectly with stock rails on 1963 to 1966 C10, C15, K10, and K15 frames, this radiator requires no trimming or custom brackets. Factory positioned mounting tabs and hose connections match manual transmission plumbing and maintain clearance for the original heater box and brake booster. By preserving proper firewall to core spacing, the design ensures maximum airflow through the fin pack and reduces installation time. This precise fit minimizes the risk of leaks due to misaligned hoses and secures reliable cooling under LS or LT swap conditions. The result is a straightforward upgrade that respects the original truck geometry.
Trust in this radiator's precise fit and cooling consistency. For the same radiator but with fans please see our 1963-1966 GM Truck Radiator (Manual Transmission) with Fans.