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## Re: [oletrucks] Engine placement

 To: "Ole Trucks" Re: [oletrucks] Engine placement "WR Teto" Tue, 5 Sep 2000 11:25:31 -0400
 ```Mark, the way it is usually done is to place the engine at the same angle as the pitch of the rear end. Do not use the drive shaft as a guide, as the rear end and engine may be at the same angle, but in different planes. Usually GM products are about 1-3 degrees pitch backwards from horizontal. I set up my rear end this way, and then when I put in my motor mounts, I set them so that I had a 2-1/2 degree pitch, measured by placing an electronic protractor on the carb intake mounting face. If you don't have a convenient way of measuring the angle, it can be calculated by the formula: angle in degrees (SIN) x 12 = height of the slope per foot That will give you the slope per foot. Just punch in the angle on any calculator that has trig functions, then hit the SIN key and multiply the result by however many inches you want to measure the slope. For example, 2.4 degrees comes out to approximately 1/2" slope every 12". So you could shim a 12" level with 1/2" and that would be the pitch of the engine. Keeping the motor and the rear end at the same "pinion angle" will help extend the life of the u-joints. For those that watch shows like Horsepower TV, I believe they used this method on one of their engine set-ups. Wally / Templeton, MA > Question: > How are you supposaed to position the engine to get the carb setting the way > it should? I always thought you wanted the carb throat surface to be > horizontal. But, if the TH-30's pan surface isn't paralell to the ground, > won't this cause problems? > > Any feedback will be appreciated. oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959 ```
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