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January 23rd, 2008, 05:40 PM
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#1 (permalink) |
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Registered User
Join Date: Jul 2007
Posts: 294
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Advice on 4spd Transmissions
Hey guys, sorry for bringing such a small detail up, I dont know where to look for this information so i was hoping one of you would know. Im going to convert my 69 cutlass 4-door over to a 4spd. I highly douby i will have the money to buy an actual 4spd from a 69 cutlass, so i was wondering what transmissions would cross over ? i was thinking about just swapping out the rear end with just a GM 12 bolt or something to make up for the rear gears, and if i have to make an adapter plate to bolt the transmission up. I dont think it would hurt anything, because i need to get the special pilot bearing in order to get the 4spd to bolt up. So what transmissions could i use ? and if you have any leads on ones in good condition that would be great. thanks again
Ok looking back on that it didnt really make sense, let me rephrase, i want to use an M20 in my 4sp swap, almost all the muscle cars came with M20's lol. So what splines do i need on the input shaft and the output shaft ? And if i cant find an oldsmobile bellhousing to put on it, what would work with mild modification ? thanks
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69' Cutlass 4 door. Built 455 inside, grandma's grocery getter outside. Best sleeper in disguise. 
Last edited by The_Jeremiah; January 23rd, 2008 at 09:58 PM.. Reason: Poor Explanation LOL |
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January 24th, 2008, 08:32 AM
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#2 (permalink) | |
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Super Moderator
Join Date: Mar 2007
Location: Northern VA
Posts: 4,331
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Quote:
There are three different Muncie transmissions - M20, M21, and M22. Prices on all have been driven through the roof by restorers. An option is a Borg Warner T10.
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Joe Padavano 64 Jetstar 88 Conv 66 442 L-69 Conv 68 W-30 69 H/O 69 442 70 W-30 72 442 84 Custom Cruiser 86 Caprice wagon (w/307 Olds) |
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January 24th, 2008, 09:01 PM
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#3 (permalink) |
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Registered User
Join Date: Jul 2007
Posts: 294
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I would probably go with a borg warner T10 then. Are they all the same ? if not what splines do i need on each end ? thanks again
__________________
69' Cutlass 4 door. Built 455 inside, grandma's grocery getter outside. Best sleeper in disguise.
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January 27th, 2008, 01:18 AM
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#4 (permalink) |
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Registered User
Join Date: Jul 2007
Posts: 294
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hmm
Ok i think the borg warner T10 is a good candidate to go with, but i was wondering if i could shove a saginaw under there ? they look almost identical. What do you guys think ? also i cant find anywhere the splines i need on each end. what do you guys think ? thanks again
__________________
69' Cutlass 4 door. Built 455 inside, grandma's grocery getter outside. Best sleeper in disguise.
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