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02-05-2004, 03:00 PM
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#1 |
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Registered User
Join Date: Nov 2003
Location: kc
Posts: 229
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rearend I.D. for speedometer correction
rearend has GM 69 stamped on it, tires are p275/60/15 with th350 tranny. any help would be appreciated. thanks.
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02-05-2004, 03:08 PM
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#2 |
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1FINE69
Join Date: Aug 2003
Location: Detroit, Michigan
Posts: 239
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Go to tci transmissions website they have calculators for the proper gears and really good prices from what I can tell.
__________________
Had a 69 swb fleetside 350zz3 w 400turbo trans oak lined bed with rhino coated sides red exterior. SOLD |
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02-05-2004, 03:09 PM
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#3 |
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Formerly yellow72custom
Join Date: May 2001
Location: Austin, TX
Posts: 7,531
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If you are asking what the ratio is, proably the best way would be to pop your rearend cover, and stamed on the ring gear is the ratio. 41-10 is 4.10, 41-11 is 3.73, and 43-14 is 3.07.
I reccomend this because your rearend fluid poralby hasn't been changed in many years. And it is a simple job, besides the awful smell of gear oil.
__________________
'72 Chevy C10 Mild 350/TH350/3.07. Ochre/White. Old high school ride. '70 GMC C2500 '62 327 4bbl/SM465/4.56-geared Dana 60. White/White. Project or parts truck. '97 Saturn SL DD. 1.9/5-speed. 40+ highway mpg |
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02-05-2004, 04:01 PM
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#4 |
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Registered User
Join Date: Nov 2003
Location: kc
Posts: 229
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yes im looking for the gear ratio on the rearend, whats the common stock ratio for a 71 swb. thanks
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02-05-2004, 04:09 PM
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#5 | |
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Senior Member
 
Join Date: May 2002
Location: Hammond, WI
Posts: 1,798
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depends on the engine and transmission. what engine do you have?
__________________
Mike 2001 Dakota R/T - Silver CC - 1 of 1671 •360 w/46RE •392 limited slip 1972 Chevy Suburban - Turquoise/Black 1969 Chevy C/10 - Blue LWB •350 w/ 700R4 •3.73 posi •PS PB A/C - SOLD  Using your turn signal is not "giving information to the enemy" 67-72 FAQ Quote:
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02-05-2004, 04:15 PM
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#6 |
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Registered User
Join Date: Nov 2003
Location: kc
Posts: 229
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originally had 6cyl. 250 / powerglide, just installed 350 crate/ th350 in v8 position.
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71 C10 SWB BLACK AND WHITE 350 CRATE TH350 ENJOY LIFE |
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02-05-2004, 04:20 PM
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#7 |
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Formerly yellow72custom
Join Date: May 2001
Location: Austin, TX
Posts: 7,531
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It would almost certinally be 3.73 then. Was standard in 6-cylinder trucks. Unless it says different on the glovebox option sheet, or the rearend has been swapped out sometime in the past.
__________________
'72 Chevy C10 Mild 350/TH350/3.07. Ochre/White. Old high school ride. '70 GMC C2500 '62 327 4bbl/SM465/4.56-geared Dana 60. White/White. Project or parts truck. '97 Saturn SL DD. 1.9/5-speed. 40+ highway mpg |
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