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73-87chevytrucks.com
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73-87 Chevy _ GMC Trucks
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Rear Drivelines, Drive Axles and Gearing
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RING GEAR RECOMENDATIONS 78 C20 14 BOLT FULL FLOATER
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Topic: RING GEAR RECOMENDATIONS 78 C20 14 BOLT FULL FLOATER (Read 1914 times)
Johno
Newbie
Posts: 12
RING GEAR RECOMENDATIONS 78 C20 14 BOLT FULL FLOATER
«
on:
May 08, 2020, 10:50:46 AM »
Have to rebuild diff has a 410 gear ratio now
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VileZambonie
Global Moderator
Senior Member
Posts: 19022
Re: RING GEAR RECOMENDATIONS 78 C20 14 BOLT FULL FLOATER
«
Reply #1 on:
May 08, 2020, 10:56:43 AM »
It's not clear what you are asking for. Are you looking to change ratio's? Brand? What's wrong with yours?
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, ___
/ _ _ _\_
⌠ŻŻŻŻŻ' [☼===☼]
`()_);-;()_)--o--)_)
74 GMC
,
75 K5
,
84 GMC
,
85 K20
,
86 k20
,
79 K10
zieg85
Global Moderator
Senior Member
Posts: 7543
Re: RING GEAR RECOMENDATIONS 78 C20 14 BOLT FULL FLOATER
«
Reply #2 on:
May 08, 2020, 11:19:03 AM »
Quote from: Johno on May 08, 2020, 10:50:46 AM
Have to rebuild diff has a 410 gear ratio now
The short answer is depends. C20 assumes it is a 2 wheel drive. What size tires? What do you typically tow with it? What transmission do you have? What engine do you have and how healthy is it? 4.10 doesn't like highway speeds, subtle changes won't do much but effect tow-ability. If you are looking for gas mileage even the highest gear you can find may hurt you if your engine is tired or not running right...My $.02
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Carl
1985 C20 Scottsdale 7.4L 4 speed 3.21
1986 C10 under construction
https://www.facebook.com/groups/248658382003506/
Johno
Newbie
Posts: 12
Re: RING GEAR RECOMENDATIONS 78 C20 14 BOLT FULL FLOATER
«
Reply #3 on:
May 09, 2020, 05:58:01 PM »
Ring gear is rusted and pitted in areas been sitting awhile had to clean out axle tubes out,moisture ,low on gear oil i don't know how long it has sat
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73-87chevytrucks.com
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73-87 Chevy _ GMC Trucks
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Engine/Drivetrain
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Rear Drivelines, Drive Axles and Gearing
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RING GEAR RECOMENDATIONS 78 C20 14 BOLT FULL FLOATER