Pontiac 400 GTO Ram Air III V8 with 366 hp and 410 ft-lbs of torque. This engine features the following parts:
- Cast Crank
- GM Rods
- ARP Rod Bolts
- Pontiac 400 block-bored-decked-honed
- Pontiac heads - 2.11"x1.66" valves
- Speed-pro 288`-.465" lift cam (CS-1022R)
As with all our remanufactured engines, this Pontiac 400 GTO Ram Air III V8 features new pistons, rings, complete gasket set, oil pump, and valvetrain installed. The block is bored and honed and new cam bearings and freeze plugs are installed. The heads are resurfaced, featuring new guides and seals, then refinished with a 3-angle valve job. Crankshafts are reground and micro polished to factory specs. Each motor is pretested for compression, oil pressure, and oil flow before leaving the factory.
Our 12 month limited warranty covers parts for 12 months unlimited mileage.
History of the Pontiac 400 V8
For 1967, Pontiac introduced the 400 in?? (6.6 L). The 400 V8 was a bored-out 389 with 4.121 inch bore and 3.75 inch stroke (104.7 mm by 95.3 mm). It replaced the 389 and remained in production through the 1979 model year
Ram Air V - In 1969 Pontiac created several versions of their "tunnel port" engine: a special short-deck version of the V8 for Trans Am racing and a 400 standard deck version. The factory also experimented with 366 and 455 in?? versions. The cylinder head was patterned after the highly successful Ford 427 tunnel port head. So large were the intake ports that the pushrods ran through the center of the ports via pressed-in tubes.