Author Topic: whats a good tranny for a 70?  (Read 729 times)

Offline D70challenger

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whats a good tranny for a 70?
« on: July 29, 2010 - 02:56:44 AM »
hey guys, i want to put in a manual in my 70 chally, i dont care if its new or old, i was planning on putting in a stroker kit, still undecided. if a 572 can work on a stock block then i would definatley get a 572, whichever is the largest that will work on a stock block is which i will get. so the tranny will need to be able to support the output of whatever kit i get.


1970 Dodge Challenger
2005 Ford Mustang




Offline Chryco Psycho

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Re: whats a good tranny for a 70?
« Reply #1 on: July 29, 2010 - 12:46:57 PM »
Well I would use an 833 or the new 833 from passon performance & possibly use the Hemi OD he is building
 I am not a fan of the Tremec conversion , it will not shift above 6000 rpm & is not particularly strong , you could use the Viper T56 but major floor reconstruction is nessisary to fit it

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Offline 72hemi

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Re: whats a good tranny for a 70?
« Reply #2 on: July 29, 2010 - 01:25:45 PM »
With the t56 its not only floor reconstruction, its torsion bar crossmember reconstruction as well. But if you do go the 6 speed route make sure its a Viper spec T56 or a new Viper TR6060, as they have stronger internals.

Mcleod is also developing a 5 speed manual transmission for Mopars.
« Last Edit: July 29, 2010 - 01:33:15 PM by 72hemi »
1972 Dodge Challenger 340 6 Pack 4-speed
1996 Dodge Viper GTS Coupe

Offline D70challenger

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Re: whats a good tranny for a 70?
« Reply #3 on: July 29, 2010 - 05:36:48 PM »
wow, i didnt know that about tremecs, i looked into them alot since i use one in my mustang and i know there supposed to be good. otherwise i prob would have gotten the t56 or the t6060. i looked into the 833's, are they all manual? and are they all 4 speeds? well if i do the 543 stroker kit, will the 833 be able to support it?

heres some pics of my floor pans, i have a couple questions, currentley I HAVE A 727 AUTO INSTALLED. so my questions are, what is that hole in the transmission tunnel? it looks to far foreward to be a shifter hole, but since i have no interior i cannot tell. and im guessing those metal brackets are for the old center console, can i have a body shop just cut that off?




1970 Dodge Challenger
2005 Ford Mustang

Offline Chryco Psycho

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Re: whats a good tranny for a 70?
« Reply #4 on: July 30, 2010 - 02:01:32 AM »
All 833 are 4 spds , some use 3rd gear for the OD so you shift 1-2-4-3 internally , but by reversing the lever on the outside of the trans you still use the normal 4 spd shift pattern , the 833 is still one of the strongest trannies ever & will take a ton of power .
 Personally I would stay closer to 512 CI & keep some rod ratio & keep the rings away from the piston pins for a street engine build , you will still have lots of power .
 The hole in your floor is for the shift rod that drops down below the floor & the brackets are for the original console , the brakcts will have to be removed to mount almost any manual trans in your car .

Challenger - You`ll wish You Hadn`t