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Upgrading from 2.77 trans

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electrorc
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Upgrading from 2.77 trans

Post #1 by electrorc » Sat May 21, 2011 11:39 pm

Hey everyone,
I'm stuck on figuring out what transmission to run in my 65 Mustang, and am looking for some input. I'm supposed to be getting my engine back from the shop next week--it's a '66 200 block. Basically a stock rebuild, but with a 264/264 cam from Classic Inlines. I currently have the 2.77 3 speed right now. While I've hardly driven it, it seems mostly ok other than the shifter being loose and a really worn clutch. I'm worried about the durability however, as it will be a daily driver, and I'll eventually be doing more modifications to the engine.

My apologies for the length on this, first of all...
These are the choices I'm looking at:
1) T5: This would be the nicest since it's a daily, but the most expensive route. For this I'd need a T5 crossmember, slip yoke, trans mount insulator, the adapter plate, throwout bearing from a 67 6, pilot bearing for the 4cyl T5, clutch disc from an 80s 2.3, a new pressure plate, the 4 cyl T5, and most likely I'd need to shorten the driveshaft. Using the cheapest T5 I could find, that setup's going to be a little over $800.

2) I could do a 3.03 swap using the 2.77->3.03 adapter. This would be the trans, adapter plate, 80s 2.3 clutch disc, new pressure plate, 67 pilot bearing, 67 throwout bearing, new slip yoke. Total a little over $500. Anybody know if the driveshaft needs to be shortened when going this route?

3) 4 speed Toploader. Same parts as in (2). Total around $670.

4) I found a guy on Craigslist selling a 67 200 engine with the 3 speed trans. Has a fairly new clutch but I'd probably replace it. He said it's complete with starter, flywheel, clutch, etc. Not sure on the price yet. If I go this route and bolt all the flywheel, bellhousing, clutch, PP, etc to the 66 block, will I need anything else? I was looking through a catalog and saw a different listing for the lower clutch rod between 65 and 67, will that need to be changed? I know the clutch fork is different. Driveshaft modifications? This would probably be about $400, though I'm not 100% sure how much the guy is selling the engine+trans for yet.

5) And of course I could do the T5 swap with the 67 bellhousing from (4). This would be like $900.

Now with all that said... did I miss anything involved in any of those swaps? My biggest thing is that I had forgotten that I broke a little piece of the 2.77 bellhousing off at a bolt hole when I pulled the engine. I have a welder, but the bellhousing is aluminum and I don't have any of the stuff for that. I could probably take it somewhere, but then I'd probably still need to retap it and what not. And of course with the 2.77 bell I'm stuck with the 8.5" clutch, and I should probably replace the pressure plate on that.

I'm leaning towards (4) with the 3.03 just because it seems like that'd be about my best and cheapest option. I technically have room in the budget for the T5, but I'm not sure if that'd be the best choice here. I'm still trying to get my floor pans and other metal in, and I'd like to have the extra room in the budget in case something comes up. What do you guys think?
-William
'65 Mustang coupe, 29U build date, '66 200ci 0.040 over, '63 head, ~9.3:1 CR, '67 3.03 3-speed trans
Clay Smith 264/264-110LC cam, Autolite 2100 1.02" (won't idle, 1100 until then...), CI Autolite adapter, DS2 distributor, HEI ignition module
Stock suspension, Shelby drop, dual master conversion
My Mustang blog

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FalconSedanDelivery
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Re: Upgrading from 2.77 trans

Post #2 by FalconSedanDelivery » Sun May 22, 2011 12:04 am

The cheapest and easy would be the 3.03 ( that leaves you open for a 4speed toploader or a T-5 later ) I have the complete swap if your interested , the Flywheel, Bell, Fork, block plate, and a very good 3.03 and a Hurst Shifter ( the good one not the universal deal its a Master Shift , same as a competition plus but for a 3 speed , you will need a drive shaft ( its the same as a C-4 automatic in 65-66) and a Clutch kit I would like to get 500.00 for everything , if your interested PM me , I will Not break it up .
Falcon 6's, FE's I Like them both , Sold all My 6 cyl stuff ( for now at least ) glad to pass along some tips though

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Re: Upgrading from 2.77 trans

Post #3 by rbohm » Sun May 22, 2011 7:19 pm

8) i suggest going big, get the T5 you wont be sorry with two extra gears, one being an overdrive. it also allows you to run a stiffer rear gear, say a 3.55 or 3.73, while maintaining decent rpm levels on the freeway.
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rocklord
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Re: Upgrading from 2.77 trans

Post #4 by rocklord » Mon May 23, 2011 11:07 am

rbohm wrote:8) i suggest going big, get the T5 you wont be sorry with two extra gears, one being an overdrive. it also allows you to run a stiffer rear gear, say a 3.55 or 3.73, while maintaining decent rpm levels on the freeway.


If you go as rbohm suggests and upgrade to a 3.55 or 3.73 rear end, make sure to use T-5 out of a V8, which has the 3.35 first gear. If you get a T-5 out of a 4cyl, you can go with a 3.00 rear axle, and have the same effective gearing ratios.

Here are the calculations to make my point. Make sure you look at the overall gearing between the transmissions in first and OD.

Ford 2.77 three speed Transmission
Overall Ratio with 3.20
First gear -- 3.29 -- 10.528
2nd gear -- 1.75 -- 5.60
3rd gear -- 1.00 -- 3.20
Reverse -- 4.46 -- 14.272

Ford T5 1352-162 4 Cyl Transmission 1987 WC
Overall with 3.00
1st gear-- 3.97-- 11.91
2nd gear-- 2.34-- 7.02
3rd gear-- 1.46-- 4.38
4th gear-- 1.00-- 3.00
5th gear-- 0.79-- 2.37
Reverse-- 3.70 --11.10

Ford T5 1352-169 8 Cyl Transmission 1987 WC
Overall Ratio with 3.55
1st gear-- 3.35 -- 11.892
2nd gear-- 1.93-- 6.851
3rd gear-- 1.29-- 4.579
4th gear-- 1.00-- 3.55
5th gear-- 0.68-- 2.414
Reverse-- 3.15-- 11.182

I have a 4cyl T-5 and 3.00 rear end gears for my Mustang. 3.55 gears wouldn't work for me with overall gearing of 14.1 in first.

Hope this helps.
Dan

Currently Own
1965 Mustang, 200CID, 3Spd
1964 Corvair Coupe, 164CID, 140HP, 4Spd
1961 Corvair Lakewood wagon, 145CID, 80HP, 2Spd Powerglide Auto.
2020 BMW X3 M, 3.0L Dual Turbo, 473HP, 8-Spd Auto. 0-60mph 4.1sec; 174mph Top Speed.

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electrorc
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Re: Upgrading from 2.77 trans

Post #5 by electrorc » Mon May 23, 2011 9:18 pm

Okay I went ahead and looked at the '67 3.03 setup I found today and decided to buy it. Everything seemed to be in pretty decent shape, and now I have a spare block (that probably needs rebuilding...) and a spare good head haha. This way I can get it going again without spending all that much and I'll still be able to swap the T5 in later on when I have more funds. At this point, I really just want to be able to drive it again...

FSD: Thanks for the offer on the parts, but shipping would be really expensive for me--I'm in Missouri at the moment.

And yeah, I'll definitely be taking a careful look at the gear ratios when I do the T5 swap eventually. Right now I have 3.20s, so I was leaning a little more towards the 4 cyl T5. I'll probably be trying to do an 8" swap around that same time though, so I'll have to see what gears I wind up with then.

Thanks for the help :)

Oh one last thing: with the '67 bellhousing and the 3.03, will a '67 Mustang 3.03 driveshaft fit or no? I kind of remember there being a difference on the rear u-joint or something but couldn't find anything for sure. I know FSD said the one from a C4-equipped 65-66 would fit, but I don't see any for sale around here.
-William
'65 Mustang coupe, 29U build date, '66 200ci 0.040 over, '63 head, ~9.3:1 CR, '67 3.03 3-speed trans
Clay Smith 264/264-110LC cam, Autolite 2100 1.02" (won't idle, 1100 until then...), CI Autolite adapter, DS2 distributor, HEI ignition module
Stock suspension, Shelby drop, dual master conversion
My Mustang blog

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FalconSedanDelivery
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Re: Upgrading from 2.77 trans

Post #6 by FalconSedanDelivery » Tue May 24, 2011 12:03 am

The 67 Shaft Should as the discontinued the 2.77 in a Mustang , Glad You found a deal , have fun
Falcon 6's, FE's I Like them both , Sold all My 6 cyl stuff ( for now at least ) glad to pass along some tips though

RancheroBoy
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Re: Upgrading from 2.77 trans

Post #7 by RancheroBoy » Sun Jan 03, 2016 6:55 pm

My son and I are re-doing a 1960 Ranchero. We are using a 200 six from a 1966 Mustang that had the 2.77 transmission with a floor shifter. We are tickled at the idea of installing a Borg Warner T96 overdrive trans in lieu of the good old 2.77.

We can use our aluminum bell housing as the pilot bore matches, and 2 of the 4 bolt holes match. We plan to drill, thread, and install a bolt stud for the other two mount holes, as there are flat faces on the inside where these bole holes would go.

The problem that we need to overcome is, the input shaft on the T96 is about 1/2" shorter than the 2.77 AND the T96 has a 1"-10 spline shaft, where the 2.77 (and our clutch) is a 15/16"-10 spline. I expect that we can get a 9" dia. 1"-10 spline clutch plate (but an not sure), but am not sure how to deal with the shaft length issue.

We are looking for any help and input regarding what to do about the shaft length issue (are there other input shaft available?) and if there is a clutch plate like we need, and where to get it.

Thank you for your help.
Low 'N' Slow 1960 Ranchero, dual headers with glasspacks and exit infront of rear wheel is the goal.

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