The 1965 Pontiac Catalina 2 2 wasn’t just another full-sized cruiser—it was Pontiac’s brute with brains. Under the hood sat the massive 421-cu-in V8, putting out 338 hp in the base version and up to 376 hp with the Tri-Power option, along with around 460 lb-ft torque. GM’s mid-size rules capped engines at 400 cu-in—but that didn’t apply to full-size Catalina bodies. Pontiac exploited that loophole, stuffing the 421 into the Catalina shell with heavy-duty suspension, dual exhausts, and optional f