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In 1967 the 421 was enlarged to 426.61 cu in (7.0 L) by increasing its bore to 4.12 in (104.6 mm). Both Chevy and Ford had 427 cu in performance engines, so Pontiac simply referred to its 427 as a 428 to one-up them. It retained the 421's 4 in (101.6 mm) stroke and 3 + 1 ⁄ 4 in (82.6 mm) main journal.
Do not confuse with later AMC 2.5 L engine that uses GM small corporate pattern . Chevrolet Turbo-Thrift engine (post-1962) Chevrolet 153 Inline 4 (Chevy II, pre-Iron-Duke - includes the Vortec 3000/181 industrial/marine crate motor) Detroit Diesel V8 6.2L and 6.5L; Duramax V8; Generation III V8s with modifications. These modifications include ...
1963-engines were available in 415 and 425 horsepower versions. 1964 was the final year of the Max Wedge option. The engine for the third year was named the "Stage III." Max Wedge cars equipped with four-speed transmissions were only produced in the final year, as prior to that point Chrysler did not have a manual transmission that could handle ...
Heads used on the high performance 409 and 427 engines had larger ports and valves than those used on the 348 and the base 409 passenger car and truck engines, but externally were identical to the standard units – but for the location of the engine oil dipstick, on the driver's side on the 348 and the passenger's on the 409/427.
As Chevrolets under the skin, Canadian Pontiacs including the Parisienne used the same engines and transmissions as full-size Chevys, including the 230 and 250 cubic inch 6 cylinder and 283, 307, 327, 350, 396, 400, 409, 427 and 454 cu inch V8s. These engines were mated to the same transmissions as Chevrolet, including 3 and 4 speed manual and ...
Requests from dealers (notably Don Yenko in PA, Baldwin-Motion in NY, Nickey in IL and Dana in CA) who had been dealer-installing 427 cu in (7.0 L) engines in the Camaro prompted Chevrolet to use an ordering process usually used on fleet and special orders (taxis, trucks, etc.) to offer 427 engines in the Camaro. Two Central Office Production ...
For 1958, GMC reduced the bore of Pontiac's 370-cubic-inch (6.1 L) to 3.875 in (98.4 mm), resulting in a displacement of 336-cubic-inch (5.5 L). (In Canada, however, GMC used the Chevrolet small-block engine rather than the Pontiac.) For 1959, as the Pontiac engine's stroke was lengthened to 3.75 in (95.3 mm), a further bore reduction to 3.78 ...
The Pontiac Executive is an automobile model that was produced by Pontiac from 1967 to 1970. [ 1 ] The Executive name replaced Pontiac's long running mid-range Star Chief , beginning for 1966 when all Pontiacs in this range were named Star Chief Executive for this one year only, before the series became simply the Executive for 1967.
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