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over drive trans #1496696 09/05/13 05:34 PM 09/05/13 05:34 PM
Joined: Dec 2006 Posts: 117 california u.s.a. R racecar43 OP member
racecar43 OP member R Joined: Dec 2006 Posts: 117 california u.s.a.	Any input on the easy and best overdrive trans to use in an early abody small block?..

Re: over drive trans [Re: racecar43] #1496697 09/05/13 05:53 PM 09/05/13 05:53 PM
Joined: Jan 2003 Posts: 16,376 D dogdays I Live Here
dogdays I Live Here D Joined: Jan 2003 Posts: 16,376	A833OD will be the easiest. It fits without welding. It is not the best, although the lighter A-body weight removes some of the problems of the huge ratio drops. Probably the R154 Supra Turbo 5-speed is next, I believe it doesn't require modifying the torsion bar crossover, could be wrong. But the shifter is in a different place, IIRC. Problem to me is that on a linear scale, "easy" is at one end of the scale and "best" is as far away as it can be. So while a modern 5 or 6 speed built to handle mountains of torque is best, it is also the most difficult to actually install in the car. And the A833OD is easiest but its large gear splits make it also the worst. Get the picture? R.

Re: over drive trans [Re: racecar43] #1496698 09/05/13 06:37 PM 09/05/13 06:37 PM
Joined: Jan 2003 Posts: 28,067 Irving, TX feets Senior Management
feets Senior Management Joined: Jan 2003 Posts: 28,067 Irving, TX	Manual or automatic? We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon

Re: over drive trans [Re: feets] #1496699 09/05/13 07:22 PM 09/05/13 07:22 PM
Joined: Sep 2007 Posts: 14,889 up yours Supercuda About to go away
Supercuda About to go away Joined: Sep 2007 Posts: 14,889 up yours	lol, huge ratio drops, ha ha. I suppose if you were running a 4 cylinder in a D350 yeah it'd be a problem. But one wonders if you have actually ever driven one. I suggest you look at the ratios of three speed manuals of the same era and compare them to the A833OD, pretty close or "worse" and no one cries about huge ratio drops there. http://www.moparts.org/Tech/Archive/clutch/17.html I have a 65 Cuda, early A body, I am fitting an A833OD into. It has a 318 and a 3.55 rear gear. They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.

Re: over drive trans [Re: Supercuda] #1496700 09/06/13 03:01 AM 09/06/13 03:01 AM
Joined: Oct 2005 Posts: 6,048 Back home in PA B BulletBob master
BulletBob master B Joined: Oct 2005 Posts: 6,048 Back home in PA	65 is not a direct bolt in it will take a 66 drive shaft that uses a standard U joint not a ball and trunnion style If I remember correctly I had to notch the X member to clear the linkage Thats been way too long ago and may have been when we put a 440 in a 65 Dart 30 plus ago

Re: over drive trans [Re: BulletBob] #1496701 09/06/13 10:19 AM 09/06/13 10:19 AM
Joined: Sep 2007 Posts: 14,889 up yours Supercuda About to go away
Supercuda About to go away Joined: Sep 2007 Posts: 14,889 up yours	Easier to do this swap and it was to put one into my 87 Diplomat. I am intimately familiar with what needs doing when converting over. I usually spend whatever time is needed to get the parts I need at a low cost. Took me two years to gather up the stuff to swap into the Diplomat, but it cost me under $500 to go from auto to stick. Cuda is on course for about the same cost. They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.

Re: over drive trans [Re: Supercuda] #1496702 09/06/13 03:09 PM 09/06/13 03:09 PM
Joined: Jan 2003 Posts: 16,376 D dogdays I Live Here
dogdays I Live Here D Joined: Jan 2003 Posts: 16,376	My first new car was a 1972 Chevy Nova with a 350 and 3-speed on the floor. It had those huge drops I am talking about, so yes I know. I believe First gear was something like 3.12:1. Worked well with the 3.08 rear gear for starting on hills. Driveable, but I always wished for a four speed. My current ride is my '64Dog which has a NP420 transmission and Third gear is something like 1.7:1. Going up a long hill and want to shift down? Now the engine is screaming. It'd be so much nicer with a 1.4 Third. R.

Re: over drive trans [Re: dogdays] #1496703 09/06/13 09:12 PM 09/06/13 09:12 PM
Joined: Sep 2007 Posts: 14,889 up yours Supercuda About to go away
Supercuda About to go away Joined: Sep 2007 Posts: 14,889 up yours	Quote: My first new car was a 1972 Chevy Nova with a 350 and 3-speed on the floor. It had those huge drops I am talking about, so yes I know. I believe First gear was something like 3.12:1. Worked well with the 3.08 rear gear for starting on hills. Driveable, but I always wished for a four speed. My current ride is my '64Dog which has a NP420 transmission and Third gear is something like 1.7:1. Going up a long hill and want to shift down? Now the engine is screaming. It'd be so much nicer with a 1.4 Third. R. None of which is relevant to an A833OD. If you have a gutless engine then you need more gears to crutch it along. My 64 300 with a warmed up 413 and an A745 three speed had no problems going up I8 east of San Diego, just add a bit more gas, no need to down shift. An A833OD would have simply dropped the cruising rpm because 1-2-3 were about the same ratios as the three speed. They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.

Re: over drive trans [Re: Supercuda] #1496704 09/07/13 12:35 AM 09/07/13 12:35 AM
Joined: Aug 2005 Posts: 5,999 Salem Grizzly Moparts Proctologist
Grizzly Moparts Proctologist Joined: Aug 2005 Posts: 5,999 Salem	Quote: lol, huge ratio drops, ha ha. I suppose if you were running a 4 cylinder in a D350 yeah it'd be a problem. But one wonders if you have actually ever driven one. I suggest you look at the ratios of three speed manuals of the same era and compare them to the A833OD, pretty close or "worse" and no one cries about huge ratio drops there. http://www.moparts.org/Tech/Archive/clutch/17.html I have a 65 Cuda, early A body, I am fitting an A833OD into. It has a 318 and a 3.55 rear gear. Shoot, no doubt about that. Cripes, I have a 318 two barrel, 2.94's in a 4100 pound half-ton and the 833od pulls that thing around no problem. I'd be puttin' 2.76's in that '65; it's gonna be too quick with 3.55's. Mo' Farts Moderated by "tbagger".

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