View Full Version : 10 Bolt Rear
sfranks56
09-12-2010, 06:43 PM
I have a 1968 Le Mans with a ten bolt rear with 2.93 gears. Can a posi unit with higher numerical gears, say 3.42 or 3.55 be installed in this housing?
zipper06
09-12-2010, 07:04 PM
Housing yes, but not sure you may have to use a spacer plate for the taller gear with your present posi unit. Some people make thicker gears for the low ratio posi units. Do a google search for the gears with your present posi unit.
JMO
Zip.
signsbyesa
09-12-2010, 07:36 PM
if the 10bolt has ears on the bottom, its rebuildable, if not, its not
recommended for strength or abuse, good luck bud :wink:
fla1976
09-12-2010, 07:50 PM
Here are a few.
http://www.markwilliams.com/gm10bolt.aspx?CategoryID=183
http://www.chevyhiperformance.com/techarticles/48518_posi_10_bolt_upgrade_install/index.html
http://roadtrip.yearone.com/2010/04/pontiac-10-bolt-rearend-how-to.html
http://www.drivetrain.com/parts_catalog/ring_and_pinions/gm_8.5_ring_and_pinions.html
chevyfireball
09-23-2010, 03:32 AM
I'd be shoving a 12 bolt or 9" under there.
traysvega
09-23-2010, 04:07 AM
I had an 8.2 in my 68 lemans and installed a 4.56 with a spacer,but it didnt last long.Eventually found a 12 bolt out of a chevelle that fit the bill.
JEFF69Z28
09-23-2010, 09:18 AM
I have a 8.5 10 bolt in my monte carlo with moser internals so far so good and the car runs 10.20's.Some one said they were good up to about 650 hp.
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