Slim Fit Radiator 68-77 Chevelle Auto Tran

The Slim Fit Radiator 68-77 Chevelle Auto Tran is purpose-built for classic Chevrolet Chevelle owners running automatic transmissions who need reliable cooling without sacrificing underhood space. Originally, first-generation radiators consumed significant real estate in tight engine bays, forcing compromises on accessory placement and airflow management. This PROFORM radiator solves that problem by delivering OEM-level cooling capacity in a compact footprint, making it the smart choice for restorations, street builds, and high-performance swaps where every inch matters.

The slim design achieves efficiency through optimized core density and aluminum construction, which dissipates heat faster than vintage brass-and-copper units while reducing overall weight to just 29 lbs. PROFORM engineered this radiator specifically for the 1968–1977 Chevelle platform with automatic transmission cooling passages, ensuring compatibility with factory inlet/outlet locations and transmission cooler ports without modification. The compact 20.5 x 7.5 x 35.25-inch profile allows fitment alongside modern electric fans, updated alternators, and power steering pumps—upgrades that typically demand extra clearance in vintage engine compartments.

Mechanics and restorers favor this radiator when upgrading Chevelles with fuel injection, serpentine belt drives, or mild to moderate performance builds where stock cooling falls short but space constraints prevent oversized solutions. Installation requires no fabrication—water necks and hose outlets align with original mounting bosses, and the transmission cooler circuit integrates seamlessly into existing or modern automatic transmission configurations. Whether you're completing a frame-off restoration, refreshing a driver-quality classic, or building a street machine, this slim-fit approach delivers the thermal management expected from a reputable manufacturer without compromise.