Author Topic: Corporate 14 bolt  (Read 1793 times)

Offline zieg85

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Corporate 14 bolt
« on: October 01, 2010, 08:16:18 AM »
My new toy has a 4.56 Gov-loc in it.  I would like to change the gears out but retain the G-80 carrier.  Question is what is the highest gear that will work for the carrier? 
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 Da67goatman

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Re: Corporate 14 bolt
« Reply #1 on: October 01, 2010, 09:23:57 AM »
On your carrier 4.56-5.38 the other carrier is 4.10-3.23.
<Pitcrew>
1989 R2500 Suburban mild 350 TBI 700r4 10.5" 14bolt 4.10 w/ 33s
1992 fullsize Blazer 4x4  35s no lift, 4.10s, Hella driving lights, TJ Flares, Huge bumpers, Snorkel, custom interior

Offline zieg85

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Re: Corporate 14 bolt
« Reply #2 on: October 01, 2010, 11:00:36 AM »
Thanks for the info, looks like I need another carrier if I want to go down in ratio.
1985 C30 Custom Deluxe Ext. cab 5.7L TH400 3.21 
1985 C20 Scottsdale 7.4L 4 speed 3.21
1986 C10 under construction
https://www.facebook.com/groups/248658382003506/

Offline VileZambonie

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Re: Corporate 14 bolt
« Reply #3 on: October 01, 2010, 12:45:59 PM »
Leave the 4.56 and ditch the th400 for a 700r4
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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: Corporate 14 bolt
« Reply #4 on: October 01, 2010, 01:59:34 PM »
Leave the 4.56 and ditch the th400 for a 700r4

I am leaning toward that way Vile since the TH400 is very loud in first and reverse, has a weird whirling noise that winds down going into park from reverse.  I have to find a reputable shop to rebuild me one.  My 1986 parts truck has a 700R4 in it however it probably needs to be updated.  Long term it will see towing a 5th wheel camper.
1985 C30 Custom Deluxe Ext. cab 5.7L TH400 3.21 
1985 C20 Scottsdale 7.4L 4 speed 3.21
1986 C10 under construction
https://www.facebook.com/groups/248658382003506/