Author Topic: RING GEAR RECOMENDATIONS 78 C20 14 BOLT FULL FLOATER  (Read 473 times)

Offline Johno

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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

Offline VileZambonie

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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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Offline zieg85

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    • 73-87 GM squarebody extended cab and conversions up to 91 R/V series
Re: RING GEAR RECOMENDATIONS 78 C20 14 BOLT FULL FLOATER
« Reply #2 on: May 08, 2020, 11:19:03 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
1985 C30 Custom Deluxe Ext. cab 5.7L TH400 3.21 
1985 C20 Scottsdale 7.4L 4 speed 3.21
1986 C10 under construction
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Offline Johno

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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