Just wanted to share this info from Wikipedia, on what engines used the GM metric bolt pattern on the common Fiero swaps we use. Im sure most know these, but what the hell. GM metric pattern Also called the GM small corporate pattern and the S10 pattern This pattern has a distinctive odd-sided hexagonal shape. Rear wheel drive applications have the starter mounted on the right side of the block (when viewed from the flywheel) and on the opposite side of the block than front wheel drive. The 2.2l S10/Sonoma had the starter located in the same position as front wheel drive cars. GM 2.8/3.1/3.4/3.5/3.9 L V6 (also used by AMC) Buick 3300/3800 V6 Cadillac 4.1/4.5/4.9 L V8 Isuzu 3.5L DOHC V6 AMC/Chrysler 2.5L I4 found in Jeep Cherokee, Comanche, Wagoneer, CJ and Wrangler and Dodge Dakota GM Iron Duke/Tech-4 2.5L I4 GM 122 1.8/2.0/2.2 L I4 GM 5.3L LS4 V8 GM 3.5L LX5 Short Star V6 Northstar pattern Nearly identical to the GM small corporate/metric pattern, except that the starter is located between the cylinder banks, and the lower right bolt hole is moved outward by roughly one inch. Being nearly identical, it too has the distinctive odd-sided hexagonal shape. These engines can be fitted in Rear Wheel Drive vehicles with the right bellhousing and are used in hot rods, kit cars, sand rails and late model engine swaps. All Cadillac Northstar V8s Oldsmobile Aurora L47 V8
Posted on: Mon, 03 Feb 2014 19:10:30 +0000
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