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06-26-2005, 10:02 PM
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#1 |
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Registered User
Join Date: Jun 2005
Location: sc
Posts: 77
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good price on '78 12 bolt
What is a good price on a 5 lug 12 bolt out from under a '78? I purchased one from my buddy with drums and all for $75. It seems to have about a 3.40 gear in it (by turning and counting) but I have not counted the # of teeth to see exactly what the ratio is. I figured when I tear up my 10 bolt under my '86 I'll rebuild the 12 bolt with new bearings, seals, 3.73 gear and posi. He had the old truck (wrecked) and I could not resist not getting the rear out from under it before it got junked. Maybe I didn't get jipped?
Jeremy
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86 c-10 383 w/ sportsman II heads comp 286h cam Edlbrock RPM Performer intake Holley 750 th350 w/2400 stall 3.73 gears with powertrax No-Slip posi unit. Just broken in good. Will get a 1/4 time this week. |
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06-27-2005, 02:48 PM
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#2 | |
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Registered User
Join Date: Jun 2005
Location: Sacramento CA
Posts: 1,255
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Most likely 3.42. If it is what you want, isn't broken or worn out, you can use it, you can afford it, sounds like you saved money, then it is a good deal. Plus you saved American Iron and recycled it to your truck.
Quote:
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Got bored, sold everthing. Got bored, looking for a 1960-66 C-10. Want to build my last truck. |
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07-12-2005, 02:40 AM
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#3 |
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Registered User
Join Date: May 2003
Location: Shreveport LA
Posts: 3,170
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Be sure you allow for changing the drive shaft. Using a 12-bolt requires a shaft about 3/4" longer than the same truck with a 10-bolt.
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07-12-2005, 09:29 AM
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#4 |
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Born a Chevy Man
Join Date: Apr 2005
Location: Navarre, Florida
Posts: 10,221
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Did most of our trucks come with a ten bolt? My '86 is a ten bolt but the '70 was a twelve bolt?
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John or 86 (Viet Nam combat Vet-BIG RED ONE) '65-'66 *1986 Chevy SWB Silverado *1984 Chevy Longbed Silverado New Kia Sportage (Wife's car and she loves it)  CHEVY, American made w/pride!  If you can read this, YOU NEED TO THANK A TEACHER! If you can read this in ENGLISH, PLEASE THANK A SOLDIER!  GOD BLESS AMERICA AND BLESS OUR FIGHTING TROOPS |
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07-12-2005, 09:52 AM
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#5 | |
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Insert Witty Text Here
Join Date: Oct 2002
Location: San Antonio, TX
Posts: 3,415
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Quote:
Slonaker |
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07-12-2005, 10:52 AM
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#6 |
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www.73-87chevytrucks.com
 
Join Date: Dec 1999
Location: Birmingham, AL
Posts: 6,935
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There was an overlap. There can be 1981 10bolt and 1982 12bolts. GM used up stock until they were gone.
(For the 73-87s) 12bolts were 1973 - 1981 10bolts were 1981 - 1987
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Chris Lucas 1973 Chevy C-10 1978 GMC Jimmy (2WD) - SOLD 1987 R10 twin turbo LS 1991 R3500 SRW CrewCab 1985 K5 diesel swapped project 1989 K5 2WD conversion w/ Vette susp Project Captkaos Customs 73-87chevytrucks.com |
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