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Pinion angle on '65 Coronet with Super Stock Springs

VANDAN

VANDAN

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I'm working on a '65 Coronet Sedan, using Mopar Performance Super Stock springs, with the longer front hangers needed to mount them. These have 2 holes, for height adjustment. When using a rear end with the perches in the stock, or factory position, where does the pinion angle end up at ? Is it at an angle that is close to where it needs to be, or where shims can correct it ? Car will be a Street/Strip cruiser, so No Heavy Race set-up needed. Thanks for any, and all input...
 
I have a 62 savoy with superstock springs. Theoretically ( i dont know if true or not) the higher position alters the instant center/anti squat, planting the tires and lifting the body more at launch. I used the higher position, and added spring wedges (3 or 4 degrees, if memory serves) to get the pinion angle back down to where i wanted it, five to seven down.
 
Anytime you do any mods or change even the springs to the same part # ones I would still always check the pinion angle to be sure of where it is. If you plan to race the car any then I would definetly want to check and set it right. If its just a driver street car I have seen many never check it and if the car drives fine with no driveline vibration they usually get away with it. With SS springs I have set mine around 3 to 4 degrees down on my street/strip car and it works fine on my cars. Ron
 
383man said:
Anytime you do any mods or change even the springs to the same part # ones I would still always check the pinion angle to be sure of where it is. If you plan to race the car any then I would definetly want to check and set it right. If its just a driver street car I have seen many never check it and if the car drives fine with no driveline vibration they usually get away with it. With SS springs I have set mine around 3 to 4 degrees down on my street/strip car and it works fine on my cars. Ron
Click to expand...
Ron, did you need to cut the perches off, and re-weld them, or were you able to get away with using shims ? Thanks
 
VANDAN said:
I'm working on a '65 Coronet Sedan, using Mopar Performance Super Stock springs, with the longer front hangers needed to mount them. These have 2 holes, for height adjustment. When using a rear end with the perches in the stock, or factory position, where does the pinion angle end up at ? Is it at an angle that is close to where it needs to be, or where shims can correct it ? Car will be a Street/Strip cruiser, so No Heavy Race set-up needed. Thanks for any, and all input...
Click to expand...
Vandan, Measure the original front hanger eye hole centerline,then do the same with the new hanger.Use the hole that is closest to the original for your starting point. Let's say it's the upper hole.Take your degree readings. If your rear pinion needs to be dropped down,move to the lower hole and take your readings. If more is needed then move to shimming and use the least amount as possible.
 
383man said:
Anytime you do any mods or change even the springs to the same part # ones I would still always check the pinion angle to be sure of where it is. If you plan to race the car any then I would definetly want to check and set it right. If its just a driver street car I have seen many never check it and if the car drives fine with no driveline vibration they usually get away with it. With SS springs I have set mine around 3 to 4 degrees down on my street/strip car and it works fine on my cars. Ron
Click to expand...
Yeah...3 degrees on mine. Works great.
 
VANDAN said:
Ron, did you need to cut the perches off, and re-weld them, or were you able to get away with using shims ? Thanks
Click to expand...


I used shims on my sons Dart. My 63 came out right at 3-1/2 with the 65 B-body rear in it and SS springs so I left it there and its been fine. I used the 65 rear because it has floating drums and not the big nut on the axle hub where you need a puller to get the drum off. Ron
 
5° down is where we set mine. My perchs had to be welded onto the Dana 60 so it was easy to set them up.
 
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