this seem right for having 4:10s? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

88 Dippy · 04-01-2009, 02:13 AM

my truck is only spinning 2,000 RPM when going 60mph when it's in over drive this seems low to me for having 4:10s. the truck has a 700-R4 and 30x9.5R15 tires

Manbearpig · 04-01-2009, 03:01 AM

Yeah seems right.

You should be 1929 @ 60 MPH with 4.10:1 and 30" tires.

http://www.ringpinion.com/Calc_RPM.aspx

enaberif · 04-01-2009, 03:20 AM

Quote:

Originally Posted by 88 Dippy

my truck is only spinning 2,000 RPM when going 60mph when it's in over drive this seems low to me for having 4:10s. the truck has a 700-R4 and 30x9.5R15 tires

Enjoy having that OD :p

85Bowtie · 04-01-2009, 08:06 AM

That is the correct rpm for your set-up. And I'm the guy from Farley's dippy.

88 Dippy · 04-01-2009, 02:49 PM

Quote:

Originally Posted by 85Bowtie

That is the correct rpm for your set-up. And I'm the guy from Farley's dippy.

hey nice seeing you over here

Quote:

Enjoy having that OD :p

now that i know it's right yes i do i also like the 15 mpg

maxreps · 04-01-2009, 02:56 PM

Yep that is right, I have been calculating what mine will be when I put in a 700r4..

Manbearpig · 04-01-2009, 06:38 PM

Does it constantly drop in and out of OD?

88 Dippy · 04-01-2009, 09:08 PM

Quote:

Originally Posted by Manbearpig

Does it constantly drop in and out of OD?

nope when going down the road at 60-65 it stays put no dropping in and out

slugish · 04-01-2009, 09:36 PM

damn , what adifferece a 700r4 makes . 4:10 gears & 2000 RPMS AT 60 MPH.
I have a 350 trans & turn about 2400 rpms with a 3:42 gear . that much difference is amazing to me. I M ENVIOUS.

tvblazer78 · 04-01-2009, 09:48 PM

That is about on it, with my 4:10 and 3 speed with a 29" tire it's like 3500 at 65.

88 Dippy · 04-01-2009, 10:00 PM

OD and lock up gotta love it

04-01-2009, 02:13 AM	#1
88 Dippy Registered User Join Date: Feb 2009 Location: mt. Pleasant, MI Posts: 246	this seem right for having 4:10s? my truck is only spinning 2,000 RPM when going 60mph when it's in over drive this seems low to me for having 4:10s. the truck has a 700-R4 and 30x9.5R15 tires __________________ 1974 chevy Cheyenne C10 "The Mutt":4x4 convertion, NP208, 700-R4, stock 350, edelbrock Torker intake, edelbrock 600 CFM carb, duels 2001 Pontiac Grand Prix GT: 3.8L supercharged, 9.2:1 comprestion, ZZP XP cam, home made intake, 2 1/2" exhuast, 10psi of boost Last edited by 88 Dippy; 04-01-2009 at 02:14 AM.

04-01-2009, 03:01 AM	#2
Manbearpig Registered User Join Date: Mar 2009 Location: Midland, Tx Posts: 418	Re: this seem right for having 4:10s? Yeah seems right. You should be 1929 @ 60 MPH with 4.10:1 and 30" tires. http://www.ringpinion.com/Calc_RPM.aspx __________________ 1972 GMC C10

04-01-2009, 08:06 AM	#4
85Bowtie Registered User Join Date: Mar 2009 Location: TN Posts: 410	Re: this seem right for having 4:10s? That is the correct rpm for your set-up. And I'm the guy from Farley's dippy. __________________ '69 Dodge Charger R/T 440, 727, 3.55 Sure Grip '68 Plymouth Road Runner 383, 727, 3.23 Sure Grip '89 Dodge Diplomat ex cop car 408, 727, 3.55 Sure Grip '77 Dodge Monaco ex cop car 440, 727, 2.71 '79 Dodge 'Lil Red Express pickup 360, 727, 3.55 Sure Grip '12 Dodge Challenger SRT8 392, M6, 3.92 '85 Chevrolet C-10 SWB 2wd 305, TH350, 2.73

04-01-2009, 02:56 PM	#6
maxreps Registered User Join Date: Jan 2009 Location: greensboro, nc Posts: 174	Re: this seem right for having 4:10s? Yep that is right, I have been calculating what mine will be when I put in a 700r4..

04-01-2009, 06:38 PM	#7
Manbearpig Registered User Join Date: Mar 2009 Location: Midland, Tx Posts: 418	Re: this seem right for having 4:10s? Does it constantly drop in and out of OD? __________________ 1972 GMC C10

04-01-2009, 09:36 PM	#9
slugish Slugish Join Date: Jan 2005 Location: Earlysville, Va. Posts: 1,024	Re: this seem right for having 4:10s? damn , what adifferece a 700r4 makes . 4:10 gears & 2000 RPMS AT 60 MPH. I have a 350 trans & turn about 2400 rpms with a 3:42 gear . that much difference is amazing to me. I M ENVIOUS.

04-01-2009, 09:48 PM	#10
tvblazer78 Low & Fast! Join Date: Jan 2007 Location: Knoxville, TN Posts: 3,110	Re: this seem right for having 4:10s? That is about on it, with my 4:10 and 3 speed with a 29" tire it's like 3500 at 65. __________________ Southeastern Mini Truckin' Nationals April 27 and 28, 2012

04-01-2009, 10:00 PM	#11
88 Dippy Registered User Join Date: Feb 2009 Location: mt. Pleasant, MI Posts: 246	Re: this seem right for having 4:10s? OD and lock up gotta love it __________________ 1974 chevy Cheyenne C10 "The Mutt":4x4 convertion, NP208, 700-R4, stock 350, edelbrock Torker intake, edelbrock 600 CFM carb, duels 2001 Pontiac Grand Prix GT: 3.8L supercharged, 9.2:1 comprestion, ZZP XP cam, home made intake, 2 1/2" exhuast, 10psi of boost



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