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Old 06-21-2012, 10:59 AM   #1
AJohn6
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A 9" rearend question for the "Mad Scientists"

I ordered the Currie 9+ Centurion Ford 9" reared end housing, 3" DOM tubes, late model big Ford billet housing ends to go in my '71.

My question is; should I center the housing or center the pinion?

I have heard that Ford centered the housing in order to have constant pinion angle laterally or side-2-side as well as the vertical pinion angle. I would rather have equal length axles and the housing centered but am willing to center the pinion if needed.

All advice is greatly appreciated.

Respectfully,
Adam
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Old 06-21-2012, 11:27 AM   #2
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Re: A 9" rearend question for the "Mad Scientists"

If it were me, I would ask the tech at Curries. No one knows 9" Fords better than them.
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Old 06-21-2012, 11:39 AM   #3
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Re: A 9" rearend question for the "Mad Scientists"

I always (shouldn't sat that) use a pinion centered housing, as it keeps the driveshaft straight back. - For cars/trucks built for show, I would use a housing centered for looks.
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Old 06-21-2012, 01:16 PM   #4
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Re: A 9" rearend question for the "Mad Scientists"

Quote:
Originally Posted by robnolimit View Post
I always (shouldn't say that) use a pinion centered housing, as it keeps the driveshaft straight back.
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Old 06-21-2012, 11:59 PM   #5
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Re: A 9" rearend question for the "Mad Scientists"

Id center the housing so that you are guaranteed to have bearing movement in the u-joints even if the the drive shaft, trans and pinion are perferfectly parallel to the ground but truthfully it probably doesnt matter too much.
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Old 06-22-2012, 10:32 AM   #6
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Re: A 9" rearend question for the "Mad Scientists"

Centered pinion makes more room for mufflers.
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Old 06-22-2012, 10:48 AM   #7
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Re: A 9" rearend question for the "Mad Scientists"

Ok, this is great. Are there anymore pro's and con's I can get on either set-up?

Also, I am pretty sure I posted this in the wrong section, my apologies.

Respectfully,
Adam
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'71 SWB/Step http://67-72chevytrucks.com/vboard/s...d.php?t=291750
2017 Crew Cab Silverado LTZ with 6.2l, 8 Speed tuned by RPM in Garner, NC
'00 Chevy 1500 6.0l Silverado Reg. Cab Short Bed
'09 Chevy 1500 5.3l Silverado Crew Cab Short Bed (SOLD)
1971 LWB on 2014 1 ton chassis, L96 6.0LS / 6L90E http://67-72chevytrucks.com/vboard/s...d.php?t=796785
1969 LWB C10- Future project, possible AWD C10 on a 2002 Escalade Chassis.

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Old 06-22-2012, 10:59 AM   #8
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Re: A 9" rearend question for the "Mad Scientists"

Center your pinion in your frame to keep your driveshaft straight.'

Justin
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Old 06-22-2012, 11:09 AM   #9
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Re: A 9" rearend question for the "Mad Scientists"

Quote:
Originally Posted by Scottshotrods View Post
Center your pinion in your frame to keep your driveshaft straight.'

Justin
Justin,

When I get home I will need to send back the rear Wilwood kit for one with the late model big ford bracket. I made a last minute decision to get rid of the 12 bolt. I will call you when I get home and we can discuss this more. Thanks for your help last week.

Respecfully,
Adam
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'71 SWB/Step http://67-72chevytrucks.com/vboard/s...d.php?t=291750
2017 Crew Cab Silverado LTZ with 6.2l, 8 Speed tuned by RPM in Garner, NC
'00 Chevy 1500 6.0l Silverado Reg. Cab Short Bed
'09 Chevy 1500 5.3l Silverado Crew Cab Short Bed (SOLD)
1971 LWB on 2014 1 ton chassis, L96 6.0LS / 6L90E http://67-72chevytrucks.com/vboard/s...d.php?t=796785
1969 LWB C10- Future project, possible AWD C10 on a 2002 Escalade Chassis.

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Old 06-22-2012, 11:23 AM   #10
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Re: A 9" rearend question for the "Mad Scientists"

No problem call us up and we will help you out and take care of you

Justin
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