Performance transmissions;
Borg-Warner T-10 (manual 4-speed)
Borg-Warner 3-speed (automatic)
Rear-end
Dana 44 (w/4.55 Gears and Posi-unit)
The 'R-3' 304/335 HP, also came equipped with factory cast iron headers (Tri-Y shaped) and large tube exhaust pipes.
A special factory prepped aluminum intake manifold, with blocked-off heat riser.
And as Blue Oval Ralph stated, ported and polished cyclinder head (ports and combustion chamber).
Check out these 'sweet heads from the factory'
Intake valves (1.875"), Exhaust valves (1.625"),,,,,,Dual-rate Valve-springs #110 lb. pressure w/valve closed)
