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Old 07-18-2019, 10:37 PM   #31
nova7chevy4
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Thank you! Well if i am getting this right. I will have perches cut off and move them up +6. So my rearend will still be facing down -4. Because i want it to be -4 sounds like and i am -7 and that is with a 3 wedge already in.
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Old 07-18-2019, 10:44 PM   #32
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Forget about your current pinion angle, your just confusing yourself with all this numbers. I would cut the perch, put an angle finder in the front pinion and position the rearend with the perch ready to be tack weld. Then point down your pinion yoke to-4 and make sure your driveshaft line up with the yoke. Then tack weld them and then finish welding them. Make sure you use a good perch as some cheaper ones bend on high hp car. GL
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Old 07-18-2019, 11:12 PM   #33
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CalTrac makes a really nice CM perch. I believe the pair is a little over $100?
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Old 07-19-2019, 12:02 AM   #34
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I had a custom set made real close to the smith racecraft style. Then dont have to use u bolts.
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Old 07-19-2019, 06:46 AM   #35
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Default Re: Pinion angle

If the trans is -3.5 , and you put the pinion at 0 , you will still have -3.5 pinion compared to the trans .
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Old 07-19-2019, 06:51 AM   #36
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Old 07-19-2019, 10:54 AM   #37
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Default Re: Pinion angle

Boosted, Good pic to show the centerline relationship. Trans centerline parallel to pinion centerline under load. What is the recommended driveshaft operating angle, unloaded and loaded? <+3 (front of shaft higher than rear)
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Old 07-25-2019, 07:25 AM   #38
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Default Re: Pinion angle

Quote:
Originally Posted by boostedbowtie View Post
yeah great pic referance.. i was a little confused and well ill keep this board up to date.
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