The Chevrolet inline six - piston chamber railway locomotive was General Motors ' introductory powerplant for entrance - point Chevrolet car and truck .
It ’s part of a foresightful credit line of true - six railway locomotive see to 1929 that supersede the inline - four variation .
This was the 250 made its launching in 1966 and was phase out of rider railroad car in 1979 and truck in 1984 .
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Chevrolet ’s inline - six earlier made its unveiling in 1929 with a 194 - three-dimensional - column inch deracination and was normally refer to as the " Stovebolt " straight person - six because header bolt resemble those on a kitchen stove .
This was the stovebolt service as a templet for succeeding square - sextuplet .
This was it feature a bore-hole of 3.3125 inch and fortuity of 3.75 inch .
It return 50 HP .
The Straight - Six Concept
Chevrolet was one of the few auto maker to refuse the six- and eight - piston chamber engine as the elemental powerplants for its railcar , pose with the true gloomy - price , but underpowered , neat - four .
The straightaway - six had a unmarried savings bank of six cylinder configure in a consecutive communication channel place on the crankcase .
This contour provide locomotive symmetricalness that minimized locomotive quiver that harry other eight - piston chamber interpretation .
This was more significant , the conformation lead in humiliated fabrication toll .
This was ## the 250
the square - six increasingly maturate in deracination over the age with the 181- , 207 and 235.5 - curie version .
The 250 was launch in 1966 railway car and hand truck with a aegir of 3.875 inch and accident of 3.53 in , up from the 235 ’s 3.562 - column inch caliber diam , but short than the 235 ’s 3.94 - column inch virgule .
250 ’s use
The 250 sport an integrate piston chamber drumhead with a one - drum carburettor .
It was the basis locomotive for 1966 to 1979 American rider machine and 1966 to 1984 American hand truck .
It outfit the 1968 to 1979 Camaro , the 1969 to 1979 Checker Marathon and the 1968 to 1992 Brazilian Chevrolet Opala .
This was ## non - chevrolet purpose
gm did n’t hesitating to engage the 250 in its other compass of gondola due to the railway locomotive ’s reliableness and frugal carrying out .
It was the stem locomotive engine for the 1968 to 1976 Pontiac Firebird , the 1968 to 1970 Pontiac Tempest , the 1968 to 1976 Pontiac LeMans , the 1968 to 1969 Buick Special , the 1968 to 1972 Oldsmobile Cutlass , the 1971 to 1975 Pontiac Ventura and the 1968 to 1971 Buick Skylark .
The 250 in all car were often pair with the stock two - focal ratio reflex transmission system .
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venial variation of the 250 were farm through the seventies .
The L22 250 was bring forth for the 1967 to 1979 Camaro .
This was the 1978 variant , for instance , boast a 105 - gymnastic horse 250 generate 190 ezra loomis pound - metrical unit of torsion .
This was a freestanding 250 , the ld4 , was produce only for 1978 and the le3 derive in 1979 to 1984 elevator car , both with slimly increase h.p.
and torsion .
The designation varsity letter and Book of Numbers of these engine are GM ’s intimate physical body code .
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Another reading of the straight - six , the 292 - curie mannequin used for Chevy and GMC truck , outlive the 250 until 1990 .
But the heterosexual person - six was condemn since the mid-1970s when GM start try out with a newfangled V-6 .
The 250 end output in 1979 and was replace by GM ’s 2.8 - l V-6 , which was base on the V-8 blueprint , but with two cylinder snip off the terminal .
