there are two main differences, the input shaft bearing diameter and the countershaft. the bearing is no big deal, just get one that fits the case year. the countershaft on the OD units are shorter than the earlier units. the OD has one end 'floating' in the case. you'll need one to fit the earlier style. Brewer's or Passon or any parts house includes them in rebuild kits. what year is your bellhousing? Mark -------------- Original message ---------------------- From: ledman_70@xxxxxxxxxxx > > I never really got an answer yesterday, so I'll try again...does anyone > know it the OD's internals are a direct swap into a standard 833 main > case without any mods? I'd like to pick up a case at the Nats to do this > swap this winter. If anyone that's coming to the Nats has a case I'd > like to buy one. > > ledman_70@xxxxxxxxxxx wrote: > > > > Thanks Dave...I'd LOVE to come to Texas sometime. All these emails from > > everyone are a big help to me. I will use all this info when I get ready > > > > to do the swap this winter. > > > > Dave Casey wrote: > > > > > > The bellhousing I used is a later one for an 11" clutch and has the 4.8 > > > or > > > 4.9 opening. I just turned down the bearing retainer myself on my > > > brother's > > > brake lathe. > > > I'm using an oversized clutch (12"?) listed for truck applications, but > > > it > > > fits the bellhousing and flywheel just fine. > > > I haven't sacrificed any performance. I have abuot the best of both > > > worlds > > > without splurging for a 5-speed. > > > Speed shifting won't hurt anything, but I wouldn't expect it to hold up > > > to > > > powershifts (not many transmissions will). > > > My transmission, with new synchros, does not make the 1-2 as quick as a > > > closer ratio (non-OD) 4-speed can, but it still goes reasonably quick. > > > The > > > 2-3 and 3-4 speed shifts are no problem. It will even do 2-4 faster than > > > > > > > > > 1-2. > > > You're welcome to come down to Texas and I'll show you what I mean. > > > > > > Dave Casey > > > > > > ----- Original Message ----- > > > From: <ledman_70@xxxxxxxxxxx> > > > To: <1962to1965mopars@xxxxxxxxxx> > > > Sent: Thursday, July 19, 2007 6:08 AM > > > Subject: RE: A833 OD questions > > > > > > > > > > > > > > Thanks for the info Dave, that's a help. I've been emailing with Dan > > > > from Brewer's, too. So, from what you're saying, there's NO banging 1-2? > > > > The early bellhousings have a 4.3" opening, while the later ones are > > > > 4.8". The OD retainer is 5.2", but Dan says you can machine the retainer > > > > and the bellhousing. If you have the original bell in your Polara, > > > > according to Dan, it should be 4.3". From what you're saying, it sounds > > > > like you're trading performance for better highway cruising...now I'm > > > > not sure I want to do that. Mine will be behind a 426 about > > > > 425hp...think the OD can handle it Dave? I DO plan on slamming gears. > > > > Thanks > > > > Dave Casey wrote: > > > >> > > > >> I've been out of town, otherwise I'd have chimed in sooner. > > > >> I have an 833 OD in my '65 Polara (C-body, but uses the same trans as > > > >> B-bodies). > > > >> I used the truck/van version of the OD. > > > >> Fourth gear is something like 0.74:1. > > > >> I solved the bearing retainer problem pretty easily. > > > >> I removed the retainer from the trans and chucked it up on a brake > > > >> lathe. I > > > >> then turned down the outside diameter until it fit my bellhousing. > > > >> There's > > > >> plenty of meat on the retainer so have no fear (but at least look at > > > >> what > > > >> you're doing, because you might have a smaller bellhousing than I). > > > >> I pieced together the shifter linkage and had to make some adjustments > > > >> to my > > > >> handle because I had the wrong shifter mounting pad, but it works great > > > >> now. > > > >> I've had it behind my 413 for three years now with no problems. It has > > > >> seen > > > >> plenty of highway cruising in overdrive in that time. It has also held > > > >> up to > > > >> being driven hard in a 5000 lb car, but I don't dare powershift it. > > > >> I'm running a 3.23 in the back with 255/60R15 tires. First gear is > > > >> pretty > > > >> low, so you'll probably prefer to take off in 2nd with your 3.91. > > > >> Also, the gap between 1st and 2nd is pretty wide, so the shifting isn't > > > >> as > > > >> fast as you'd like it to be since you have to wait for the input to spin > > > >> > > > >> down or double clutch. Shifting 2-3-4, or even 2-4 can be done pretty > > > >> fast. > > > >> Second gear is my favorite because my engine raps out at about 70mph in > > > >> second (cast pistons, don't turn it past 5000). If you're spinning to > > > >> 6k, > > > >> then first gear might be a little more useful and second will be a > > > >> blast. > > > >> > > > >> Dave Casey > > > >> > > > >> ----- Original Message ----- > > > >> From: <ledman_70@xxxxxxxxxxx> > > > >> To: <1962to1965mopars@xxxxxxxxxx> > > > >> Sent: Wednesday, July 18, 2007 7:20 AM > > > >> Subject: RE: A833 OD questions > > > >> > > > >> > > > >> > > > > >> > Thanks Doug, I was hungry! I picked up the tranny and had the car on > > > >> > the > > > >> > rack to compare...the tailhouses are the same length, but the trans > > > >> > mount is in a different location, but I can fab that ok, I think. The > > > >> > shifter mount pad seems to be in the same location on both. The OD has > > > >> > a > > > >> > bracket to raise the shifter up higher, but I can work around that, > > > >> > too. > > > >> > The other issue you pointed out is the size of the bearing retainer. > > > >> > The > > > >> > OD retainer is 5.25", but I don't know the size of the standard > > > >> > 833..anybody have that measurement? I'm not ready to pull the trans to > > > >> > measure it. > > > >> > Doug Ahern wrote: > > > >> >> > > > >> >> On 30 07/13/07, ledman_70@xxxxxxxxxxx wrote: > > > >> >> > Sounds like more trouble than it's worth...then again, almost 3k rpm > > > >> >> > at > > > >> >> > 60 sure rattles your teeth in a 40+ year old car. Guess I'll keep > > > >> >> > looking. Thanks for the info Doug....can I have my fruit cup now? > > > >> >> > > > >> >> its un-nerving for us now because we are accustomed to 70mph @ > > > >> >> 2400rpm, > > > >> >> but in the 1960s, speed limits were just as high and people drove up > > > >> >> and down interstates @ 65-75mph with 3.23:1 and 2.93:1 gears and short > > > >> >> little tires on 14" wheels.,, so 3500rpm @ 70mph was normal then. > > > >> >> the car nor the engine actually mind it, but we think its too high.... > > > >> >> > > > >> >> sure.., it friday.. you eat your fruit cup now. > > > >> >> > > > >> > > > > >> > > > > >> > > > > >> > Jeff Adams > > > >> > 64 Polara > > > >> > > > > >> > > > > >> > ---- > > > >> > Please address private mail -- mail of interest to only one person -- > > > >> > directly to that person. I.e., send parts/car transactions and > > > >> > negotiations as well as other personal messages only to the intended > > > >> > recipient, not to the Clubhouse public address. This practice will > > > >> > protect > > > >> > your privacy, reduce the total volume of mail and fine tune the content > > > >> > signal to Mopar topic. Thanks! > > > >> > > > > >> > '62 to '65 Mopar Clubhouse Discussion Guidelines: > > > >> > http://www.1962to1965mopar.ornocar.org/mletiq.html. > > > >> > > > > >> > > > > >> > > > > >> > > > > > > > > > > > > > > > > Jeff Adams > > > > 64 Polara > > > > > > > > > > > > ---- > > > > Please address private mail -- mail of interest to only one person -- > > > > directly to that person. I.e., send parts/car transactions and > > > > negotiations as well as other personal messages only to the intended > > > > recipient, not to the Clubhouse public address. This practice will > > > > protect > > > > your privacy, reduce the total volume of mail and fine tune the content > > > > signal to Mopar topic. Thanks! > > > > > > > > '62 to '65 Mopar Clubhouse Discussion Guidelines: > > > > http://www.1962to1965mopar.ornocar.org/mletiq.html. > > > > > > > > > > > > > > > > > > > > > > > Jeff Adams > > 64 Polara > > > > Jeff Adams > 64 Polara > > > ---- > Please address private mail -- mail of interest to only one person -- directly > to that person. I.e., send parts/car transactions and negotiations as well as > other personal messages only to the intended recipient, not to the Clubhouse > public address. This practice will protect your privacy, reduce the total volume > of mail and fine tune the content signal to Mopar topic. Thanks! > > '62 to '65 Mopar Clubhouse Discussion Guidelines: > http://www.1962to1965mopar.ornocar.org/mletiq.html. > ---- Please address private mail -- mail of interest to only one person -- directly to that person. I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks! '62 to '65 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html.