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  2. Valve guide - Wikipedia

    en.wikipedia.org/wiki/Valve_guide

    In the 1980s, many U.S. production engine remanufacturers began reaming valve guides, rather than replacing them, as part of their remanufacturing process. They found that by reaming all the valve guides in a head to one standard size (typically 0.008 in. diametrically oversized), and installing remanufactured engine valves having stems that are also oversized, a typical engine head can be ...

  3. Saginaw Metal Casting Operations - Wikipedia

    en.wikipedia.org/wiki/Saginaw_Metal_Casting...

    In the past when it was called GM-Saginaw Product Company (SPC) a cloverleaf casting symbol mark was cast onto the iron component. [1] [2] The location has been the primary source of engine block and cylinder heads for all of GM's engines, to include Oldsmobile, Pontiac, Cadillac, Chevrolet, Buick and GMC for most of the 20th century.

  4. Chevrolet small-block engine (first- and second-generation)

    en.wikipedia.org/wiki/Chevrolet_small-block...

    The Vortec 5700 L31 (VIN code "R") is a 5.7L V8 truck engine. It is Chevrolet's last production first-generation small-block. The cylinder heads feature combustion chambers and intake ports very similar to those of the LT1 V8, but lacking the LT1's reverse-flow cooling and higher compression.

  5. Iron Duke engine - Wikipedia

    en.wikipedia.org/wiki/Iron_Duke_engine

    The Iron Duke engine (also called 151, 2500, Pontiac 2.5, and Tech IV) is a 151 cu in (2.5 L) straight-4 piston engine built by the Pontiac Motor Division of General Motors from 1977 until 1993. Originally developed as Pontiac's new economy car engine, it was used in a wide variety of vehicles across GM's lineup in the 1980s as well as supplied ...

  6. Cylinder head - Wikipedia

    en.wikipedia.org/wiki/Cylinder_head

    In sidevalve engines the head is a simple plate of metal containing the spark plugs and possibly heat dissipation fins. In more modern overhead valve and overhead camshaft engines, the head is a more complicated metal block that also contains the inlet and exhaust passages, and often coolant passages , Valvetrain components, and fuel injectors .

  7. Chevrolet small-block engine - Wikipedia

    en.wikipedia.org/wiki/Chevrolet_small-block_engine

    The Chevrolet small-block engine refers to one of the several gasoline-powered vehicle engines manufactured by General Motors. These include: The first or second generation of non-LS Chevrolet small-block engines; The third, fourth, or fifth generation of LS-based GM engines; The Chevrolet Gemini small-block engine

  8. Talk:Chevrolet small-block engine - Wikipedia

    en.wikipedia.org/wiki/Talk:Chevrolet_small-block...

    Hello, Can the crank from a 1966 Impala, 327, swap with a 1972, 350 motor? 68.196.163.139 16:04, 22 July 2023 (UTC) []. Not too sure mate, you'd be better off asking an Impala or Chevy engine forum.

  9. General Motors LS-based small-block engine - Wikipedia

    en.wikipedia.org/wiki/General_Motors_LS-based...

    The LY6 is a Generation IV small-block V8 truck engine with a cast-iron block. It shares the same bore and stroke as its LQ4 predecessor. Like other Gen IV engines, it features variable valve timing. It generated 361 hp (269 kW) at 5,600 rpm and 385 lb⋅ft (522 N⋅m) of torque at 4,400 rpm using "regular" gas, or ~87 octane.