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06-01-2008, 07:19 PM
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#1 |
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Project 7dos
Join Date: Aug 2001
Location: Abilene, Texas
Posts: 876
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3.73 or 4.11??
Hey guys,
We are going to get some new gears + posi. Right now we have 3.08 and no posi, and they are just dogs... My question though is should we go for 373s or 411s? It will see absolutely no highway driving, so that is not a concern, tranny is a th350...
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7DOS - 1972 C-10 350/350 Porterbuilt/Accuair 20x8.5/20x10 Ride Low or Die PSSST - Yes it's bagged. 7dos build thread: http://67-72chevytrucks.com/vboard/s...d.php?t=610290 |
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06-01-2008, 07:25 PM
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#2 |
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Out of the carpool lane.
Join Date: Jan 2000
Location: Clark Co, WA
Posts: 5,672
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Re: 3.73 or 4.11??
If you're absolutely sure that you won't ever use it on the highway, then I'd go 4.11's!!
 Otherwise, I'd go 3.73 for that occasional long distance trip.
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1968 C-10 SWB, 5.7 Vortec/700R4/3.73 posi, Torch Red 1968 Camaro, 250/Powerglide, all original (No, I'm not gonna drop a 350 in it!...Jeez!) 2000 Honda VFR in the faster yellow! 2008 Husqvarna TE-610 1967 C-10 SWB 'Six Appeal'-Gone but not forgotten... |
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06-01-2008, 07:27 PM
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#3 |
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Registered User
Join Date: Apr 2007
Location: King City, Ontario, Canada
Posts: 974
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Re: 3.73 or 4.11??
have to agree, gears make all the difference. if theres no highway, GO HIGHER
4.56!!
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- Jason If you can turn, Youre not going fast enough. Favorite caption: first car to 200 mph in the 1/4 mile, no parachute, drum brakes all the way around.. ..back when men were men. |
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06-01-2008, 07:42 PM
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#4 |
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just can't cover up my redneck
Join Date: May 2004
Location: Columbus OH
Posts: 11,414
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Re: 3.73 or 4.11??
Ah.....that's lower
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06-01-2008, 08:27 PM
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#5 |
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Junior Member
Join Date: Dec 2006
Location: Southeast Missouri
Posts: 2,436
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Re: 3.73 or 4.11??
It depends on what kind of performance you want, also tire size can affect things.
I am running 3.73 gears with 31's, for my kind of driving it works out great. Most of my driving is in town and country roads. Danny |
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06-01-2008, 08:38 PM
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#6 |
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Registered User
 
Join Date: Feb 2008
Location: Gulfport, MS
Posts: 99
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Re: 3.73 or 4.11??
I think you would like 3.55 with that turbo350 no overdrive, but thats my opinion.
Gulf Rat |
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06-01-2008, 10:23 PM
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#7 |
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Registered User
Join Date: Mar 2002
Location: Forney TX
Posts: 4,512
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Re: 3.73 or 4.11??
No highway 4.56 its fun.
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Troy 1965 Chevy Bagged,361 sbc,voodoo cam,1.5 full roller rockers,patriot 185cc vortec heads 2.02-1.60,vortec weiand polished intake,demon carb my truckhttp://67-72chevytrucks.com/vboard/s...d.php?t=332884 Big Red Dog build http://67-72chevytrucks.com/vboard/s...d.php?t=572274 |
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06-01-2008, 10:42 PM
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#8 | |
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The LuvShack Garage
Join Date: Jan 2004
Location: Maple Grove, TN (West Side)
Posts: 30,468
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Re: 3.73 or 4.11??
Quote:
a 3.55 or 3.73 but with "GQ's" motor & a 700R I think I'll be happy with it  If it will NEVER see the highway then go  MPG is gonna suck anyways. 
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Owner/Op: "TN Classic Transport Carriers" The Toy: "Square Vette" 72 Hybrid Blazer Toy Barn: "LuvShack" 40 x 60 x 20 Shop Tow Piggy:"Maddy" 88 Silverado 3500 Hauler: "Feathers" 14 Aluma 8218T |
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06-01-2008, 10:50 PM
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#9 |
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Project 7dos
Join Date: Aug 2001
Location: Abilene, Texas
Posts: 876
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Re: 3.73 or 4.11??
Tires are 275/60's = 28" tall... If your getting no traction with 30" tires... than what would that do with 28"!!! hahaa
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7DOS - 1972 C-10 350/350 Porterbuilt/Accuair 20x8.5/20x10 Ride Low or Die PSSST - Yes it's bagged. 7dos build thread: http://67-72chevytrucks.com/vboard/s...d.php?t=610290 |
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06-01-2008, 11:27 PM
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#10 | |
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Registered User
Join Date: Feb 2008
Location: Gulfport, MS
Posts: 99
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Re: 3.73 or 4.11??
Quote:
Gulf Rat |
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06-02-2008, 01:23 AM
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#11 | |
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The LuvShack Garage
Join Date: Jan 2004
Location: Maple Grove, TN (West Side)
Posts: 30,468
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Re: 3.73 or 4.11??
Quote:
of it. That way I can drive it long distances and get ok MPG. (Right now in the 4wd w/ 3.08's and a 350 auto I only get 8, yes only 8 MPG) 
__________________
Owner/Op: "TN Classic Transport Carriers" The Toy: "Square Vette" 72 Hybrid Blazer Toy Barn: "LuvShack" 40 x 60 x 20 Shop Tow Piggy:"Maddy" 88 Silverado 3500 Hauler: "Feathers" 14 Aluma 8218T |
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06-01-2008, 10:29 PM
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#12 |
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Registered User
Join Date: Oct 2006
Location: Arizona
Posts: 835
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Re: 3.73 or 4.11??
I've got 4.11's, posi and a very warm 350 and up to about 40 I have very limited traction with 30 inch tires that are 285's.
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67 Short Step, 355, 700R 4.11 posi rear, 4/6 drop Discs on all 4 corners. Build thread: http://67-72chevytrucks.com/vboard/s...d.php?t=219094 |
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06-01-2008, 11:41 PM
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#13 |
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fugedaboutit
Join Date: Mar 2005
Location: Gresham, OR
Posts: 832
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Re: 3.73 or 4.11??
I like my 3.73's. It really picked the truck up from the 3.08s and I can still go down the freeway @65 at right around 3k rpms. Im running a 28" tire. I drive it to the track and cross the finish line at around 4200rpms (1/4 mile) It would pick up a couple tenths with a lower (higher numerically) gear but driving the freeway would suck (gas that is). So my vote with no freeway driving would be the 4.11's Those would be a fun gear
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Currently truckless 
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06-02-2008, 03:19 PM
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#14 |
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Registered User
Join Date: Jun 2007
Location: Smyrna, GA
Posts: 709
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Re: 3.73 or 4.11??
You're looking at a new rear axle, if Im not mistaken 4.11's won't fit in a pumkin that 3.07's came stock in. Pumpkin is too small-
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Rottenwood Garage 1970...71...72 C1500 aka Orange aka Sideshow Bob 540 BB Straub Roller Cam, AFR Magnums, XP 950, TKO 600 2 Tons of Fun |
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