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Re: [oletrucks] Engine placement

To: WR Teto <monadnoc@crystal-mtn.com>
Subject: Re: [oletrucks] Engine placement
From: New Mexico Jim <ADvent@thuntek.net>
Date: 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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