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itstillruns.com/gmc-366-engine-specifications-7657378.html

The GMC 366 is a 6.0 liter, V8, long block engine. The bore is 4.0 mm and the stroke is 3.6 mm. The compression ration is 9.6:1. There are 16 valves with an OHV configuration and three compression rings on the pistons. There is a chain driven cam on this engine. The gas fuel delivery is sequential electronic fuel injection (SEFI).

www.reference.com/vehicles/specifications-366-chevy-engine...

Chevrolet made the 366 Chevy engine for school buses and medium-sized pickup trucks. Examples of vehicles equipped with this engine include the Sierra 3500 and the GMC Silverado 2500. Chevy stopped the production of the Chevy 366 engine in the mid-1990s.

itstillruns.com/366-gas-big-block-specifications-8050874.html

The 366 big block is one of Chevrolet's big block engines. The big block Chevrolet (BBC) was mainly used on school buses and medium-duty pickup trucks. Chevrolet ended production of the 366 BBC in the 1990s. The GMC Silverado 2500 and Sierra 3500 are two examples of pickup trucks that used the 366 BBC.

www.redpowermagazine.com/.../52765-chevy-427-and-366-questions

recently purchased a 68 C60 with a 427 2barrel carb. and it is kind of tired but i have a 86 Chevy school bus with a 366 4 barrel and plan to switch the engines out. The bus has lots less miles and i think i will be better off installing it and was wondering if i will have as much power. Does any...

www.heavyequipmentforums.com/threads/366-gm-truck-motor.15563

366 GM truck motor. Discussion in 'Trucks' started by amscontr, Nov 25, 2009. ... Drove a new GMC 366/4bbl/dual exhaust/5-speed 26' box truck back in the late 70's. ... Instead of an overhaul you might look into a crate engine from a Chev or GMC dealer. Prices are not too bad and you get a decent warranty.

www.redpowermagazine.com/.../60987-366427-tall-deck-gm-engines

366/427 tall deck GM Engines Archived. This topic is now archived and is closed to further replies. 366/427 tall deck GM Engines. By TP ... Here's a picture of my 1979 GMC with a 427 I bought new in 1978, before they started putting the smog pumps on starting Jan 1 1979. It's all orginal even the tarp.

en.wikipedia.org/wiki/GMC_V8_engine

GMC engines. GMC's own V8 was the 637 cu in (10.4 L) 60 degree engine based on the big block 478 cu in (7.8 L) V6 (with two cylinders added). Production started for 1966 and went through 1972. [citation needed] Non-GMC engines Pontiac. Prior to developing its own engines, smaller GMC's used the Pontiac V8 engine. They used the Pontiac 287-cubic ...

www.ebay.com/bhp/366-chevy-engine

1991-1998 Chevrolet GMC 366 6.0L OHV V8. These rebuild kits are designed to be a one-stop solution to your engine rebuilding needs. We believe these engine re-ring kits are the absolute. We have perso...

en.wikipedia.org/wiki/Chevrolet_Big-Block_engine

The Vortec 7400 L21 was a commercial version of the Chevrolet Big-Block engine used in the medium duty truck platform. Its design shared much with the L29 454, but with the addition of forged pistons and crankshaft, and coil near plug ignition. It had slightly reduced power compared to the L29 454 and used a different PCM.

forums.superchevy.com/super-chevy/70/9464569/tech-talk/big-block-366

Mark IV engines saw extensive application in Chevrolet and GMC medium duty trucks, as well as in Blue Bird Corporation All American and TC/2000 transit buses (the latter up until 1995, using a purpose-built, carbureted 427). In addition to the 427, a 366-cubic inch (6.0 liter) version was produced for the commercial market.