This was all covered about two weeks ago. Total gutless wonder of an engine. They can make power with some parts from Clifford. Factory manifolds and cam are terrible.
Completely phased out the 292 by 1990 in North America, but Brazil held on to their fuel injected straight-6 through the 1998 model year. 292 The 292 was only used in Chevrolet and GMC trucks; the block deck is taller, along with a relocated passenger-side engine mount. These were produced between 1962 to 1990; production of the engine shifted to Mexico after 1980. Year 1988 (only) 115 hp @ 3400 rpm and 215 lb. ft. @ 1600 rpm [edit]L25. Larger six's
302 The 302 GMC inline six was produced from 1952 to 1960, when it was replaced by the V6. It has a 4.00" bore and 4.00" stroke. Connecting rod length was 7.000". This is the largest raised-deck engine. It was originally designed for the GMC military M135 and M211. It was used in military 2.5 ton trucks with the HydraMatic transmission, however the engine was a sealed engine for snorkel/submersion use, had an electric fuel pump, and other features such as a deep sump oil pan. From 1952-1959, GMC manufactured the civilian 302 engine which was not sealed, had a mechanical fuel pump, and used a "standard" oil pan. This engine is popular with hotrod enthusiasts because it delivers tremendous power for an inline six engine, is truck built with a heavy cast block, and can take quite a bit of abuse. [edit]426 The 426 GMC inline 6 appeared in 1940s 4x4 Cab Over Engine (COE) trucks made in Pontiac, MI. It also appeared in large GMC trucks in the 1950s. [edit]503 The 503 GMC inline 6 was more numerous than the 426 inline 6, but beginning and ending dates are unknown. The GMC 630 Series of the early 1950s offered the 503ci inline 6 engine.
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Today's Featured Article - Tuning-Up Your Tractor: Plugs & Compression Testing - by Curtis Von Fange. The engine seems to run rough. In the exhaust you can hear an occasion 'poofing' sound like somethings not firing on all cylinders. Under loaded conditions the tractor seems to lack power and it belches black smoke out of the exhaust. For some reason it just doesn't want to start up without cranking and cranking the starter. All these conditions can be signals that your unit is in need of a tune up. Ok, so what is involved in a tune up? You say, swap plugs and file the points....now tha
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