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Angle of spring perches #2268858 03/13/17 08:48 PM 03/13/17 08:48 PM
Joined: Jan 2004 Posts: 8,343 fredericksburg,va C cudaman1969 OP master
cudaman1969 OP master C Joined: Jan 2004 Posts: 8,343 fredericksburg,va	With the S/S springs (03-04) what angle off pinion centerline do most use when installing new perches? stock angle? Or more or less? I know ride height will have a lot to do with this, but I'm trying to keep slightly higher than normal, not a lot of room with 9x30x15s radial slicks on a ten inch rim. Thanks. Mike

Re: Angle of spring perches [Re: cudaman1969] #2269057 03/14/17 12:31 AM 03/14/17 12:31 AM
Joined: May 2011 Posts: 4,489 northern,Ohio,USA C Clanton master
Clanton master C Joined: May 2011 Posts: 4,489 northern,Ohio,USA	I believe you want 6* from the pinion.if you have a lot of rake in the car front to back this may help nose down 2* installed.This is just a rough guess not knowing much about the car. GOTBOOST!New improved with Victor heads. http://www.enginelabs.com/mopar-big-bloc...t-of-necessity/

Re: Angle of spring perches [Re: cudaman1969] #2269218 03/14/17 10:59 AM 03/14/17 10:59 AM
Joined: Jan 2005 Posts: 3,635 Oakland, MI D dizuster master
dizuster master D Joined: Jan 2005 Posts: 3,635 Oakland, MI	Until you get everything in the car, you won't know perch to centerline angle. Bolt everything up without welding the perches, set the pinion angle with full weight ready to race car. Tack weld the perches in place, then rip it apart to final weld. Safest way to ensure you get the pinion angle right when you're done.

Re: Angle of spring perches [Re: dizuster] #2269511 03/14/17 06:52 PM 03/14/17 06:52 PM
Joined: Jan 2004 Posts: 8,343 fredericksburg,va C cudaman1969 OP master
cudaman1969 OP master C Joined: Jan 2004 Posts: 8,343 fredericksburg,va	Originally Posted By dizuster Until you get everything in the car, you won't know perch to centerline angle. Bolt everything up without welding the perches, set the pinion angle with full weight ready to race car. Tack weld the perches in place, then rip it apart to final weld. Safest way to ensure you get the pinion angle right when you're done. Exactly what I was thinking, do those S/S springs need more angle then stock with the amount of rise they enable (I guess the amount of hp would afect it too)? I suppose adding or subtracting 150 pounds to jump class will change things too.

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