Corp 14 bolt questions.
 

I have a 14 bolt out of a 3/4 ton truck with 3.73's in it and I have another one out of a dually with 4.56's in it.
The question is if I can take the gears out of the dually housing and put them in the truck housing.
Both are in good shape and both are complete. I know the dually housing has some differences externally but will the gears interchange?

Re: Corp 14 bolt questions.
 

Basic answer, yes
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Re: Corp 14 bolt questions.
 

Thanks. Would you know if you need a housing spreader to get the career out? I'd like to do it myself if I can.

Re: Corp 14 bolt questions.
 

I'm not sure how to go about switching the gears myself but I do have a corp 14 bolt question if you dont mind.

Mine is a 10.5" ffa w/ 4.10 gears but I can't find out for sure whether it is an open diff, lsd or gov lock. I believe its open but am not experienced enough to tell and i dont have a jack to lift it and spin the wheels. Is it possible to tell visually? I've done extensive searching and have come up blank :/ I would like to know so I know what type of lubricant to put in there.

Here are a couple of pics.. thanks guys.

Re: Corp 14 bolt questions.
 

Barrolde
Yes, that's am open diff. I use Royal Purple gear lube in mine.
Nice rig, by the way.

Re: Corp 14 bolt questions.
 

Just swap the hubs and brakes out between the two the axle tubes are the same width.

Re: Corp 14 bolt questions.
 

Thank you sir, now I can button it back up :) I got the green machine to learn how to fix break fix stuff and am having a blast - these boards have been a godsend!

I will go w/ the RP as you've prescribed and hopefully next time I am opening the diff it will be to put in a lsd :) Right, what weight do you use? The options are 75W90 75W140 80W90 85W140 90

ps. subscribed to your build

Re: Corp 14 bolt questions.
 

I think it was the 80W90 but its been years since I changed it, prob should do that to. I have a Detroit Locker in mine and love it, some people don't like them because they will engage as you go around corners under power and cause the tires to chirp. I don't mind it.

Re: Corp 14 bolt questions.
 

But the spring pads aren't, right? I'd rather just swap the gears then cut the spring pads off and relocate them.

Re: Corp 14 bolt questions.
 

No case spreader needed on a 14 bolt.

Depending on your skills and tools, I would prob just cut and change perches. Good time to correct pinion angle if lowered of lifted
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Re: Corp 14 bolt questions.
 

Thanks again for your impute. Think I'll just do that, cut the perches off. The dually rear end is in better shape anyways.

Re: Corp 14 bolt questions.
 

No worries man. Let us know how it goes
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Re: Corp 14 bolt questions.
 

Thanks for everyone's impute on this but I had a big change in plans. I'm going to convert my 84 DRW to SRW and build my child hood dream of having a monster truck.:metal::lol::metal::lol:
So I'm going to sell these axles for funding. Thanks again for your impute.