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 Post Posted: Tue Nov 27, 2007 7:56 pm 
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Location: Elizabethtown, KY
They had a repeat on muscle car this week end ( the Challenger build. Awesome car!!\:D/  \:D/) and Lou was talking about why they offset the rears or engines. It had to do with keeping the needle bearings in the U joint spinning so they wouldn't over heat and disintegrate. Maybe the engine is center on Mels frame so they had to shift the rear to get it done. On muscle car they changed the pinion angle.

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6.7772 @ 101.51 1/8th 10.747 @ 122.24 1/4

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 Post Posted: Tue Nov 27, 2007 8:04 pm 
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Engine and trans on my Camaro were offset three quarters of an inch to the passenger side.  Funny though, the pinion yoke was dead center of the rear of the chassis?  I made everything on center when I mounted my SBC in it.

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 Post Posted: Tue Nov 27, 2007 8:14 pm 
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That is what lou was saying. the challenger had the engine off to the pass side. He said it made the big hemi look bad. and he needed more room for the headers. I think the key was not to have both ends of the drive shaft on the same plane.

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 Post Posted: Tue Nov 27, 2007 8:31 pm 
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I will have to say that the most wear on a universal joint I ever seen was on a Sprint car where you have a torque tube and a single aligned U joint.

Tiger quick change rear ends posted a thing that said a perfectly aligned U joint lost horsepower and caused excessive pinion bearing wear. This was a byproduct of testing to see what gains their rears made. Sense they aren't selling U joints or tail shaft bushings, I lean to believing it.

As far as off setting the engine to the right. I see no good purpose other than header clearance. I have off set them to the left a lot, this makes static weight preload on right rear tire when you set ride hight level.  This helps torque nullification.

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 Post Posted: Tue Nov 27, 2007 9:11 pm 
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I built a 68' Dodge Dart about 3 years ago. If memory serves me correctly, the engine was offset 1.5" to the right. I believe they did this on the factory Super Stocks to clear the steering box.

John =;  :-$

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 Post Posted: Wed Nov 28, 2007 12:00 am 
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Now there ya go.  They might look good on a pit cart!

George


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