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#1824529 - 05/11/15 07:36 PM Re: Pinion angle again [Re: MR_P_BODY]
Sport440 Offline
master

Registered: 01/20/03
Posts: 6535
Loc: Canton, Ohio
Originally Posted By MR_P_BODY
Yes I do on stuff I build... on a production car I use
the drive shaft to the pinion
wave



Would you use that drive shaft to Pinion on My production car???

73 A body Sport. 440 installed in a SB K frame 1" higher then a normal BB K frame. 76 rear axel with the soft rubber axel mounts removed bolted to stock 73 springs.


What Pinion angle between the two should I be looking for.????
550 HP, If, that matters.

SET, MY Pinion angle Mike!!

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#1824537 - 05/11/15 07:42 PM Re: Pinion angle again [Re: Sport440]
MR_P_BODY Offline
Master

Registered: 06/13/03
Posts: 50630
Loc: Romeo MI
Originally Posted By Sport440
Originally Posted By MR_P_BODY
Yes I do on stuff I build... on a production car I use
the drive shaft to the pinion
wave



Would you use that drive shaft to Pinion on My production car???

73 A body Sport. 440 installed in a SB K frame 1" higher then a normal BB K frame. 76 rear axel with the soft rubber axel mounts removed bolted to stock 73 springs.


What Pinion angle between the two should I be looking for.????
550 HP, If, that matters.

SET, MY Pinion angle Mike!!


Yes I would.. assuming you run leafs I would set it at
about 5*-6*
EDIT
Now days its easy to check with a Go-Pro to see if
you need more or less.. but if your getting more than
that I would look for springs... also something that
most dont think of is when you dump off the gas.. that
rear goes nose down a lot so if you have a pile of pinion
angle that goes the other way on decel
wave


Edited by MR_P_BODY (05/11/15 07:48 PM)
_________________________

W-9 8.94 @ 151 NOW ON E-85
Mike "Raff"...(180)Watching over us
CAR IS FOR SALE

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#1824646 - 05/11/15 09:42 PM Re: Pinion angle again [Re: RV2]
RV2 Offline


Registered: 01/20/03
Posts: 2927
Loc: Covington Georgia
Sport 440 I left the Trans at 4 and brought the pinion up to 2

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#1825360 - 05/12/15 10:20 PM Re: Pinion angle again [Re: RV2]
gregsdart Offline
master

Registered: 01/21/03
Posts: 8219
Loc: Frostbitefalls (Rocky&Bullwink...
It seems pretty obvious that the guys running factory drive lines with minor mods will only need to worry about the pinion end. More modified to off the wall combos where the engine/trans angle has changed, or the rear axle height has been changed a lot, then It would be important to look at both ends. A Pro car or well built chassis is for the most part would be set with the trans pointing at the pinion( I would assume?) so just going off the driveshaft to pinion would work well. There is a fairly wide range you can get away with on pinion angle, my guess is 3 to 4 degrees either side of correct at full power. That thought comes from the way SS springs are set, and how far off they are when not under power.
This is my interpretation of why there is so much argument over which way is right.


Edited by gregsdart (05/12/15 10:23 PM)
_________________________
GREG
Educated at SHK U
Measure with yardstick
mark with chalk
cut with torch!



528 cubic inch alky injected 440-1 wedge, 3055 race weight.
8.779 at 153.16 mph. 1.289 60 ft. density altitude 1617 feet. Best 60 ft 1.24

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