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#1 |
A day late and $1 short...
Join Date: Dec 2008
Location: Northwest FL
Posts: 3,870
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Well, I guess almost anything is possible, but I digress. Could my truck, a '68 C10 swb stepside which was originally a 6cyl/3ott, have come with a factory installed 4.56 gear?
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Buck Instagram: C10_ustacould 1963 SWB Fleet Side 528 Desert Beige Milly 1967 SWB Step Side 506 Medium Blue The Old Girl 1968 SWB Fleet Side 503 Light Green Ellie SOLD 1965 SWB Fleet Side 507 Light Blue Prescription Strength SOLD 1971 SWB Fleet Side 521 White Shiro SOLD 1968 SWB Step Side 503 Light Green My Old Farm Truck SOLD Last edited by C10_ustacould; 10-07-2012 at 10:46 PM. |
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#2 |
Registered User
Join Date: Jul 2007
Location: Fall River California
Posts: 2,026
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Re: Is it possible?
I think it would be very possible and would look very cool! Just make it like a Blazer opening. I don't know if a Blazer uses different hardware in the door to support the glass and keep it from flopping around while the door is open. Look at a Blazer and go from there!
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#3 |
Registered User
Join Date: Jul 2007
Location: Fall River California
Posts: 2,026
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Re: Is it possible?
The above comment ended up on the wrong thread.
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#4 |
Registered User
Join Date: Apr 2011
Location: Mustang, Oklahoma
Posts: 2,806
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Re: Is it possible?
Have you checked the spid and stamping on the pass axle tube? Thats one heck of a gear!
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Dan <---(my name) 67 SWB C10 project "GEORGIA"-59 Brookwood 2dr wag...Next project-03 Tahoe 4x4 5.3 family ride-07 Hondur Accord, commuter car |
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#5 |
A day late and $1 short...
Join Date: Dec 2008
Location: Northwest FL
Posts: 3,870
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Re: Is it possible?
Nothing on the SPID about the gear, going to verify my RPM at 55 and then reverse engineer the gear using a final drive RPM calculator on the net. Will know more soon.
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Buck Instagram: C10_ustacould 1963 SWB Fleet Side 528 Desert Beige Milly 1967 SWB Step Side 506 Medium Blue The Old Girl 1968 SWB Fleet Side 503 Light Green Ellie SOLD 1965 SWB Fleet Side 507 Light Blue Prescription Strength SOLD 1971 SWB Fleet Side 521 White Shiro SOLD 1968 SWB Step Side 503 Light Green My Old Farm Truck SOLD |
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#6 |
Registered User
Join Date: Aug 2010
Location: Edwards, CA
Posts: 7,503
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Re: Is it possible?
3.73 would have been stock. 4.11 was the optional deep ratio. If that truck has factory 4.56 gears they would likely be on the SPID as a 4000 or 9000 series special equipment option aka COPO/fleet. They are listed in the gear code chart for '68 C/10 G/10s as a posi ratio. Did you look for a housing code or pull the cover and count teeth?
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Thanks, Tim * VIN/Model Decoders * Power Team Charts (engine/transmission/gear ratio) * Post Your Pickup SPID ** Blazer SPID ** Suburban/Panel SPID * RTFM ... Read The Factory Manuals... download 'em here Highlanders ** Do you have a 1972 Plaid Pickup? ** Plaid Blazer ** Plaid Suburban |
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#7 |
A day late and $1 short...
Join Date: Dec 2008
Location: Northwest FL
Posts: 3,870
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Re: Is it possible?
I'll try for a housing code, as the only time I had the cover off I forgot to count the teeth.
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Buck Instagram: C10_ustacould 1963 SWB Fleet Side 528 Desert Beige Milly 1967 SWB Step Side 506 Medium Blue The Old Girl 1968 SWB Fleet Side 503 Light Green Ellie SOLD 1965 SWB Fleet Side 507 Light Blue Prescription Strength SOLD 1971 SWB Fleet Side 521 White Shiro SOLD 1968 SWB Step Side 503 Light Green My Old Farm Truck SOLD |
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#8 | ||
"I ain't nobody, dork."
Join Date: Sep 2007
Location: Whidbey Island, Washington
Posts: 8,940
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Re: Is it possible?
Or jack the rear up, put truck in gear (not running), spin the tire by hand and count the revolutions of the drive shaft.
Gary
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'cuz chicks dig scars... My 1972 GMC 1500 Super Custom (Creeping Death) "long term" build thread. The Rebuild of Creeping Death after the wreck Quote:
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#9 |
Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: Is it possible?
you could treat your truck nice and remove cover clean everything up and put nice new gearoil in it after u count the teeth
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71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY |
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#10 |
Registered User
![]() Join Date: Sep 2009
Location: Prescott Valley AZ
Posts: 345
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Re: Is it possible?
Counting the drive shaft revolutions and tire revolutions is prolly the easiest. Just remember someone hasto hold the other tire if its not a posi. One revolution on the tire if its posi and two revolutions if its open. Simple and accurate.
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#11 | |
20' Daredevil (Ret)
![]() Join Date: May 2003
Location: Jefferson State
Posts: 13,636
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Re: Is it possible?
Quote:
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- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
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#12 |
Registered User
Join Date: Aug 2012
Location: Junction City, KS
Posts: 782
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Re: Is it possible?
I say pull the cover off, look for the stamp that is on the gears. Then you will know for sure. The axle tube stamp will tell you, but you have no for sure way of knowing if that is correct or not. Could have been swapped out at some time.
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#13 |
Registered User
![]() Join Date: Sep 2009
Location: Prescott Valley AZ
Posts: 345
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Re: Is it possible?
I always jack up both sides to see if its a posi, then have a sad face when its not lol
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#14 |
A day late and $1 short...
Join Date: Dec 2008
Location: Northwest FL
Posts: 3,870
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Re: Is it possible?
Drove the truck this morning to record the RPM vs MPH and used a calculator online to establish that it is a 3.73 gear. I have 29" tall tires and at 65 the RPM is 2000. Thanks for the input gentlemen. I have to go drive my truck now!
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Buck Instagram: C10_ustacould 1963 SWB Fleet Side 528 Desert Beige Milly 1967 SWB Step Side 506 Medium Blue The Old Girl 1968 SWB Fleet Side 503 Light Green Ellie SOLD 1965 SWB Fleet Side 507 Light Blue Prescription Strength SOLD 1971 SWB Fleet Side 521 White Shiro SOLD 1968 SWB Step Side 503 Light Green My Old Farm Truck SOLD |
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