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## Re: [oletrucks] Engine placement

 To: WR Teto Re: [oletrucks] Engine placement New Mexico Jim Tue, 05 Sep 2000 11:15:01 -0600
 ```If I reverse this formula can I figure out angle in degrees without an inclinometer (right word?)? WR Teto wrote: > 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 oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959 ```
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