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#1 |
Registered User
Join Date: Nov 2015
Location: San francisco
Posts: 6
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1965 c10 ratio gears...swap..fitting help!!!
Hello
I feel like i cant find any precise information about it I have a 1965 c10 4speed low gears Never use the fisrt gear All original And like most know on highway....60 mph engine screaming loool Im pretty sure i have 4.11 at the rear end.. Well i dont want swap rear end And dont want swap tranny either What kind of rear end are those ? Where can i find gears ? Im between 3.42 and 3.08 Can i find a set of gears that could feet the actual diferential ? If no please let me know what to use and where to look Thanks |
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#2 |
1965 Chevy C10, 2005 4.8L/4l60
![]() Join Date: Aug 2004
Location: DFW Texas
Posts: 8,543
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Re: 1965 c10 ratio gears...swap..fitting help!!!
Your 12 bolt will be a series 4, mean 3.73-4.10 ratios only.
To get the rpms down to non screaming, your going to need to do one of the things you don’t want to do. The 5speed swap would be an awesome swap, but there is more than just the trans swap. Do a search for 5speed swap and look that over. With your 4 series carrier, 3.73 will be the lowest ratio you can go without swapping the whole rear end housing. So you may consider just finding a 12bolt 3 series with a 3.08 and rebuild with new bearings, seals and 3.42’s as well. Good luck!
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#3 |
Registered User
Join Date: Nov 2015
Location: San francisco
Posts: 6
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Re: 1965 c10 ratio gears...swap..fitting help!!!
Ok
And those 12 bolts serie 3 , where i can find it ? Wich car or truck ? Is it a direct fit or need welding ? And or ? About the 5 speed ? Wich one exactly from wich vehicul? |
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#4 |
1965 Chevy C10, 2005 4.8L/4l60
![]() Join Date: Aug 2004
Location: DFW Texas
Posts: 8,543
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Re: 1965 c10 ratio gears...swap..fitting help!!!
63-72 are direct fit. Coil or leaf.
70 and up will be 1.5” wider but that’s not a problem. 73-84(?) 12 bolts will work, you just need to change the leaf/coil mounts. They are also 1.5” wider. 5speed: Best option out there but not the cheapest. http://67-72chevytrucks.com/vboard/s...d.php?t=482069 Good luck!!
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Clyde65 Rebuild of Clyde http://67-72chevytrucks.com/vboard/s...84#post8338184 69 Aristocrat Lo Liner build http://67-72chevytrucks.com/vboard/s...84#post7561684 ![]() ![]() ![]() support our troops! |
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#5 |
60-66 Nut
![]() ![]() Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,247
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Re: 1965 c10 ratio gears...swap..fitting help!!!
You can install any gears you want into your 12 bolt housing. You just need the correct series carrier. This would be the perfect time to up0grade to a posi. However if you do not have experience with setting up differential gears, that is best left to a professional.
The easier option would to to find a '65-'70 truck 12 bolt with the gears you want already in it. If you go with a 3.07 gear, you may have to start using 1st gear on take off from a stop.
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Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE |
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#6 |
Registered User
Join Date: Nov 2015
Location: San francisco
Posts: 6
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Re: 1965 c10 ratio gears...swap..fitting help!!!
Yeah i would love to use the first one..
Always feel short to drive only 3 speed manual |
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#7 |
60-66 Nut
![]() ![]() Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,247
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Re: 1965 c10 ratio gears...swap..fitting help!!!
They way GM originally intended the SM420, SM435 and SM465 to be driven during normal driving is to start out in 2nd gear. First gear is intended for getting very heavy loads moving or off road crawling at slow speeds. This is why they are most all geared the way they are. These trucks were intended to be used as trucks and engine RPM and highway speeds were not a concern.
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Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE |
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1964, 1965, 1966, c-10 |
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