Need timing procedure and spec for 91 GMC topkick, 366 TBI. Emissions decal is toasted. Friend's truck, dist was loose and timing was at -12 ... A forum community dedicated to Chevrolet and GMC diesel truck owners and enthusiasts. Come join the discussion about duramax engines, performance, builds, modifications, classifieds, …My old grain truck w/366 gas wouldn't pull the hat off your head, so new carb, new plugs, new module in distributor, new dist cap, changed timing closer to 12degrees BTDC, now wont't start. Tried 20 to 22 degrees BTDC same thing. ... 18436572 is the firing order for a V-8 chevy. If it runs and you are pointing at #2, then you are on the ...Mar 3, 2009 · The 366 truck crank is forged if its the original crank, and has really big counterweights. It will go right into any standard deck block with no modifications but has to be rebalanced for the much lighter passenger car pistons. Because there are large counterweights, its just metal removal. The crank flange is exactly the same as the passenger ...

Oil Pumps. Stock big-block Chevy oil pumps have been available in two configurations: standard volume or high volume. The difference is merely the length of the spur gears inside the pump housing; standard-volume gears are 1.135 inches long, and high-volume gears are 1.300 inches. Either design fits any standard big-block rear main cap.Find CHEVROLET 6.0L/366 Distributors Steel Distributor Gear Material and get Free Shipping on Orders Over $109 at Summit Racing!Nov 28, 2009. #11. surfer-joe said: The 366 was a good motor, lots of low end torque and they are not near as bad as a 370 Ford on fuel consumption. I always found their fuel and ignition systems less tempermental than a Ford. Instead of an overhaul you might look into a crate engine from a Chev or GMC dealer.

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