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#1 |
Registered User
Join Date: Dec 2004
Location: Saskatchewan, Canada
Posts: 1,371
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Steering box input size?
I'm just gathering parts for my steering swap from rack to box, and was curious what GM used for a spline size and count? 3/4-36 was used on the column end I know, but is it the same on the box end? Thanks!
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1964 Chevy Short Fleet: Tornado 1972 Chevy C10: Fast Orange Secondaries Wide Open |
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#2 |
60-66 Nut
![]() ![]() Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,247
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Re: Steering box input size?
There were 3 different sizes used.....3/4-30, 3/4-36 and 13/16-30 or 36 (don't remember which) Sorry but I don't know which years used which splines.
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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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#3 |
Registered User
Join Date: Dec 2004
Location: Saskatchewan, Canada
Posts: 1,371
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Re: Steering box input size?
Well, I went and checked the box I plan on using. It's got 31 splines and a flat side, leading me to believe it's a 36. I have a Borgeson U-joint that has 3/4-36 input on it, and it won't go on, leading me to believe it's a 13/16-36. Sound about right for a mid-70's 1/2 ton 2wd power box?
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1964 Chevy Short Fleet: Tornado 1972 Chevy C10: Fast Orange Secondaries Wide Open |
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#4 |
60-66 Nut
![]() ![]() Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,247
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Re: Steering box input size?
I've run into the 13/16-36 before, but I don't recall exactly what year it was.....probably in the 70's somewhere.
__________________
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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#5 |
Registered User
Join Date: Dec 2004
Location: Saskatchewan, Canada
Posts: 1,371
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Re: Steering box input size?
Another question. My other option is manual steering (due to the rear engine and an extremely long power steering hose setup and light front). My frame is a boxed pro-street cloned in the front from a 73-87 pickup. Will a 60's manual gearbox bolt to that? Also, what years of front end parts like tie rod, idler arm, etc are the same? Looking tonight I think I might go the manual route.
Thanks!
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1964 Chevy Short Fleet: Tornado 1972 Chevy C10: Fast Orange Secondaries Wide Open |
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#6 |
60-66 Nut
![]() ![]() Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,247
|
Re: Steering box input size?
If you want a manual box one from a '69-'87 will be a bolt on, although one from the '67 or '68 may work also. I have one from a '67 at the shop, I'd have to verify that it would bolt up to the '73-'87 frame. Also the newest manual box that I have seen myself is a '74.
As for the other parts, all the '73-'87 C10 stuff interchanges to my knowledge. When I ask for parts for the front suspension I go with a '77.....the year I graduated from high school ![]()
__________________
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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