Conversions & Swaps LSX Engines in Non-LSX Vehicles
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Old Sep 14, 2012 | 02:29 AM
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Default motor mount power angle

When making your own engine mounts what is the angle you shoot for, I'm going to be building a drag car. If I remember correctly it's 5 degrees, but not positive.
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Old Sep 14, 2012 | 02:33 AM
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Do a seach online. Lots out there on driveline angles. You want it to match the rear end angle. I think most reccomend 3 degrees down on the trans output, 0 degrees on the driveshaft, 3 degrees up on the front of the differential.
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Old Sep 14, 2012 | 10:18 AM
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that sounds right just haven't thought about it in a while
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Old Sep 14, 2012 | 02:21 PM
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right around the 5 deg. slope on the motor and close to a 5 deg up on the diff.will be good from what i was always told and read.thats about wat i did on mine!
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Old Sep 15, 2012 | 12:11 AM
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I set mine at 0 degrees with the car on level ground
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Old Sep 15, 2012 | 10:03 AM
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^^^There should be corresponding, matching angles at the trans & differential.
0 degrees will wear out your u-joints much faster.
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Old Sep 15, 2012 | 11:54 AM
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My fault for not enough info. My carb mount is at 0. Before I measured the transmission shaft, it was at 15 degrees. My concern was driveshaft vibration. My pinion angle hasn't changed.
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Old Sep 15, 2012 | 09:07 PM
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I went 3* on my engine/tranny, and I have mocked the rear end at the same. I heavily modded my frame for autocross, and I put a lot of adjustability into the crossmember, to change my angle if need be. There is a tad bit of maneuverability built into my solid engine mounts I made, if the need arises to change the drivetrain angle. Build thread coming soon!
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Old Sep 16, 2012 | 12:59 AM
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So you take the angle measurement at the tailshaft of the tranny on the rear seal flange then match the rear pinion angle?
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Old Sep 16, 2012 | 01:12 AM
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Yes, I had to get adjustable upper trailing arms to get my pinion angle up 3 degrees to match the trans angle down 3 degrees.
A quick google of driveshaft geometry will give pics...here.
http://www.hotrodhotline.com/md/html..._harmonics.php
Originally Posted by boot85
So you take the angle measurement at the tailshaft of the tranny on the rear seal flange then match the rear pinion angle?
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