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04-25-2006, 11:14 AM
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#1 |
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Registered User
Join Date: Jan 2006
Location: GREEN BAY,WI
Posts: 91
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3.73 or no 3.73,that is the question
Ok, I have prices for my gear selection
$125 for new 3.73's $275 for a new posi case $50 for a new bearing/seal kit $150 for install ____________ $600 total My question is: Should Pay the extra $125 for the gears, or should I just leave it 3.07 and just have the posi put in? |
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04-25-2006, 11:25 AM
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#2 |
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Hittin E-Z Street on Mud Tires
 
Join Date: Nov 2004
Location: Greenville, SC
Posts: 23,090
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Re: 3.73 or no 3.73,that is the question
Depends.
If you have an OD tranny, I'd use a 3.73. If you have a non OD tranny like a th350 or th400 I'd use the 3.07 unless you haul trailers all the time or something. My $0.02
__________________
Jesse James 1967 C10 SWB Stepside: 350/700R4/3.73 1965 Ford Mustang: 289/T5-5spd/3.25 Trac-Loc 1968 Pontiac Firebird: Project Fire Chicken! 2015 Silverado Double Cab 5.3L Z71 2001 Jeep Wrangler Sport 4.0L 5spd 2020 Chevrolet Equinox Premium 2.0L Turbo 2011 Mustang V6 ~ Wife's ride  American Born, Country by the Grace of God  1967 CST Shop Truck Rebuild! My 1967 C-10 Build Thread My Vintage Air A/C Install Project "On a Dime" Trying my hand at Home Renovation! 1965 Mustang Modifications! |
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04-25-2006, 11:26 AM
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#3 |
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Registered User
Join Date: Sep 2004
Location: Linden, Tn.
Posts: 232
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Re: 3.73 or no 3.73,that is the question
depends what you want to do with the truck. and what kind of mileage you expect to get.
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04-25-2006, 12:38 PM
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#4 |
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Registered User
Join Date: Mar 2005
Location: 10-Uh-See
Posts: 5,609
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Re: 3.73 or no 3.73,that is the question
Split the difference with a 3.42.
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04-25-2006, 12:55 PM
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#5 |
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Registered User
Join Date: Jan 2006
Location: GREEN BAY,WI
Posts: 91
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Re: 3.73 or no 3.73,that is the question
I have a TH350 so, maybe I'll stay with the 3.07's.
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04-25-2006, 12:56 PM
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#6 |
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67-72 Addict!
Join Date: Feb 2002
Location: The TAX State!
Posts: 7,856
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Re: 3.73 or no 3.73,that is the question
I like my 3:73 posi rear
__________________
Jim 1970 C/10 Fleetside w/Ghost Flames Lowered 4.5" front and 4" rear (Raked) 355/350 Turbo w/shift kit 10" Redneck Performance Verter w/2500 stall Hooker Super Comps part#2808-1 Performer RPM Air-Gap 12 Bolt w/3:73 gears- Eaton Posi Comp Cams XE262 with 1.6 Crane Energizers, Road Demon 625 and Brodix IK 180 heads |
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04-25-2006, 12:59 PM
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#7 |
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Keepin an eye out
Join Date: Feb 2003
Location: So.Cal
Posts: 3,920
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Re: 3.73 or no 3.73,that is the question
I have 3.42 w/ t350 trans, works for me.
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1970 Chevy C10 SWB 5.3 1996 Toyota Tacoma SR5 4x4 2007 Vespa GTS 250 Scooter ZIP 91351 |
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04-25-2006, 01:53 PM
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#8 |
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hmm...
Join Date: Jan 2004
Location: Culver, Indiana
Posts: 1,631
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Re: 3.73 or no 3.73,that is the question
Depends, do you like to buzz the motor? Remember that with standard sized tires (28-30" or so), 60 mph with 3.73's and a 1:1 final gear ratio is 3000 RPM...
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1983 Oldsmobile Delta 88 1967 Chevy C-10 stripper www.fcrperformance.com - wanna go...faster? talk to FCR. |
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04-25-2006, 02:44 PM
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#9 |
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DON'T TREAD ON ME
Join Date: May 2005
Location: Crosby County, TX
Posts: 989
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Re: 3.73 or no 3.73,that is the question
If you want to win drag races 3.73.
If you want something with reasonable fuel economy (for our trucks that is) stick with the 3.07
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Old Yeller |
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04-25-2006, 04:09 PM
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#10 |
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Registered User
Join Date: Jul 2005
Location: Kernersville, NC
Posts: 599
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Re: 3.73 or no 3.73,that is the question
i've got 3.43 in my daily driver. i got 11.88 mpg wit the 305 in my sig. turns 3000 doin 70mph, about 2000 doin 45mph. the trans is 4 spd saginaw, 1.1 final gear. im lookin to get 3.73 posi rear end. chris.
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its a work in progess. 71 c-10 lwb, in the middle of frame off restoration. 69 c-10 swb, drag truck, 406 sbc, balanced, comp 292 cam, ported, polished, gasket matched, and bowl blended pro comp 210cc heads, 2.02/1.60 ferrea valves,1.6 roller rockers, re curved hei with msd 6al box, 2-step rev limter, accel 300+ wires, ported victor jr intake, holley 750 double pumper carb, dynomax 1 5/8 headers, 4 spd munci m-20 with super case and iron midplate, mr. gasket vertigate shifter, 5.38 pro gears with full spool, 33 spline moser axles and c-clip elimators, line-loc, 5 gal fuel cell, holley blue pump.  7.807 @ 88.37mph 1.60 60FT 80 g-20 van, tow rig, cammed 305, th350, 10 bolt 88 jeep wrangler, dd, 258, ax-15 swap, 4.5" lift, 33x12.50's, lockers, 3.55's |
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