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11-15-2007, 10:35 PM
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#26 |
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Registered User
Join Date: Oct 2003
Location: San Jose Ca.
Posts: 3,354
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Re: what gear ratio do you run or would like to have
3.42 with a 700r4.
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RIP to my son Dylan. 5/17/2002 - 8/18/2018 If you want to know more about rare forms of pediatric cancer or if you want to help fund pediatric cancer research, please check out the website for the non-profit I started. https://slothforpedcancer.org 68 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=223234 |
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11-16-2007, 10:26 AM
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#27 | |
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Love That '69
Join Date: Oct 2007
Location: Sherwood Park, Alberta, Canada
Posts: 360
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Re: what gear ratio do you run or would like to have
Quote:
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I AM CANADIAN!!!!!  1969 Chevy C/10 Truck - SBC V8, TH-350, 3.73 Posi, 1000W Rockford Fosgate Stereo System, B&M Megashifter, GT Grant Steering Wheel, Dual Magnaflow Exhaust System, Dynomax Headers, Lowered 1" Front & 3" Rear, Front/Rear Sway Bars, Racing Seats, 6000K HID Headlights 2008 Chevy Colorado LT - 3.7L I5, 4 Speed Automatic, Crew Cab, 4X4, Z71 Off-Road Package, "Ground Effects" Package, K&N Cold Air Intake, Supermod PTB, Magnaflow Exhaust w/ Resonator, 500W Kenwood / Rockford Fosgate Stereo System, Custom LED Lighting, 6000K HID Low's / High's, Blackcat Customs Gauges / Needles, Carbon Fiber Interior Accents, KrFabs 2" Lift Shackles / Torsion Bar Crank with Rancho RS5000 Shocks, Superskids Skid Plates |
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11-16-2007, 10:33 AM
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#28 | |
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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: what gear ratio do you run or would like to have
Quote:
 I have a 700R4 w/3.73 and love em, but for a hair more in mileage I'd like a set of 3.42's. My truck ain't fast anyways.
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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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11-16-2007, 11:26 AM
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#29 |
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Green club
Join Date: May 2002
Location: Central CA
Posts: 1,059
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Re: what gear ratio do you run or would like to have
I run 3.42's with a th350 and the 31" tall rear tires. I don't have a tach, but it will cruise all day at 65-70.
I am planning on the 200 from the Chevelle going in the truck very soon for freeway usage and calm things down noise and fuel mileage wise. The Chevelle will get the 400 back, I hardly ever drive it anymore.
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71 short/fleet ECE 4/6 drop, LQ4/700r4/3.42 gears 70 SS396 Chevelle 427/200-4R/3.73posi 61 Lincoln Continental, black on black Son you are going to drive me to drinkin if you don't stop drivin that hot rod lincoln |
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11-16-2007, 11:54 AM
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#30 |
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Registered User
Join Date: Aug 2005
Location: Hillsboro Oregon
Posts: 6,449
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Re: what gear ratio do you run or would like to have
3.08 (might be 3.20) with a th400 and 476BBC cruises pretty nicely. Plenty of torque to roast the tires on demand and decent Hwy RPM.
I'd like a built 700r4 and 3.73s eventually. |
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11-16-2007, 12:11 PM
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#31 |
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Senior Member
Join Date: Aug 2002
Location: Valley Center KS
Posts: 3,524
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Re: what gear ratio do you run or would like to have
I'm running 3.73 with a 700r4 in my GMC. Cruises down the highway comfortably and is a good gear with the tranny.
In my 68 I'll be running 4.11s with a 4L60E. Not quite as concerned with mileage. Plus I'll be running taller tires |
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11-16-2007, 12:39 PM
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#32 |
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All stock and staying that way
Join Date: Jul 2003
Location: Elkland, PA
Posts: 1,858
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Re: what gear ratio do you run or would like to have
The Blazer has 3.73's and 31" tires, and it was just about right. The truck has 4.10's and 30" tires and it spins a bit much.
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1970 K/5 Blazer CST 4WD, Medium Bronze, 93k ACT. miles, 350, 4 speed, rear positraction, 16.5" x 8.25" HD wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Currently frame off restoration finally getting close to completion..  1972 Cheyenne Super 20 2WD, DK Blue/White, 90K ACT. miles, 402, TH400, 4.10 open, tilt, tach, vacuum, A/C, AM/FM, manual throttle.. A mostly original paint never rusted Texas survivor... 2017 Sierra 1500 SLT 4WD, Black, 45k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2... 2019 Canyon SLT 4WD, White, 62k miles, 3.6, 8L45, 3.23 LS, 18" wheels |
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11-17-2007, 12:00 AM
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#33 | |
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Junior Member
Join Date: Jul 2006
Location: Delran, NJ
Posts: 458
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Re: what gear ratio do you run or would like to have
The "3.08" rear end is actually 3.07xxx, so it rounds up to 3.08. Some people say 3.08, some say 3.07. My GM restoration package says that '71 Burbs with 350's came with a 3.08 rear but the 3.73 rear was an option. Not sure which one I have...
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11-17-2007, 12:58 AM
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#34 |
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Registered User
Join Date: Oct 2006
Location: Temecula,CA
Posts: 309
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Re: what gear ratio do you run or would like to have
4.56's baby. smoke the tires from a stop light and watch the gas gauge go down.
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Nick Old pic of my 72: http://img340.imageshack.us/my.php?image=img0435co5.jpg 04 Silverado Daily Driver 68 GMC short step http://67-72chevytrucks.com/vboard/s...d.php?t=379665 "I'll beat you to the gas station!!" 
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11-17-2007, 04:47 AM
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#35 | |
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Registered User
Join Date: Apr 2007
Location: NSW, Australia
Posts: 205
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Re: what gear ratio do you run or would like to have
Quote:
I will soon have the best of both worlds 4.56 gears 30" tall tires 454 chev and a gear vendors
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 1979 C20 pickup 454 big block turbo 400, 4.56 gears
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11-17-2007, 11:59 AM
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#36 |
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Registered User
Join Date: Oct 2007
Location: NW Ohio
Posts: 58
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Re: what gear ratio do you run or would like to have
456 gears.. wanting to go with a 373 .. i have to fish through the 5 or 6 rear end I have to find out what they are to see if I can swap them.. Anyone know how to tell what they are from just looking at them? or do I have to pull the covers and count the teeth? and if so how many teeth do 373's have?
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Jeff 1967 GMC 3/4ton LWB, Orginal Straight 6, 4 on the floor Project truck 
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