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10-12-2007, 09:12 PM
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#1 |
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Registered User
Join Date: May 2007
Location: Erie pa.
Posts: 57
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77 ff 14 bolt gear ratio
I am trying to figure out my gear ratio, Did chevy make a gear other than 3:73 or 4:10 (out of a 77 3/4 ton 4x4) This one doesn't leak , so I didn't want to take the cover off.
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65 tripower conv 4spd gto, 66gto, 67 gto 65 lemans conv 4spd 69 firebird conv. 67 c20 4x4 |
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10-12-2007, 10:33 PM
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#2 |
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Registered User
Join Date: Dec 2006
Location: Trinidad, Colorado
Posts: 642
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Re: 77 ff 14 bolt gear ratio
YUP...I got a ring and pinion from an 80' that is 3.55.....??? Might have been special order or something? Most were 4.10
A......
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69' 3/4 4X4 470ci BBC 700 HP....  D60/14bolt 205/465 http://profile.myspace.com/index.cfm...ndid=127691959 |
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10-13-2007, 07:07 AM
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#3 |
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Registered User
Join Date: Dec 1999
Location: Old Mission, MI, USA
Posts: 2,507
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Re: 77 ff 14 bolt gear ratio
90% chance it is 4.10.
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Tim |
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10-13-2007, 08:02 AM
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#4 |
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Registered User
 
Join Date: Feb 2007
Location: Star Valley, WY
Posts: 2,038
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Re: 77 ff 14 bolt gear ratio
yup, seen them with 3.55's to 4.88's, but 4.10's seem to be the norm.
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Steve 1971 GMC Longbox. Full Roller Stroker 489 w/ FiTech EFI, Chris Straub Cam/NV4500/205/D60/14B w. Grizzly Locker and 4.11's. 2" Lift on 33's |
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10-14-2007, 07:30 AM
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#5 |
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Registered User
Join Date: Dec 1999
Location: Old Mission, MI, USA
Posts: 2,507
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Re: 77 ff 14 bolt gear ratio
Also 4.56 would be the second most common ratio. 3.73s are pretty rare, and any other ratio (3.42 or 5.13) are very rare.
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Tim |
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