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07-22-2023, 11:37 AM | #41 |
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Join Date: Jan 2022
Posts: 723
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Re: 5 Speed Conversion
One definite advantage of the 5 speed is a synchro 1st gear. The Mitchel trans only has a 2-3 synchro because there is not enough room in the case. I had one and although that 2-3 synchro is fantastic I really wanted to be (and more importantly my wife) able to shift into 1st without coming to a complete stop.
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07-22-2023, 03:49 PM | #42 |
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Join Date: Feb 2019
Posts: 61
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Re: 5 Speed Conversion
I have a T5 installed in my 1931 RPU behind the original engine. I went a slightly different route but with about the same results. I used a T5 out of a mid 80s Jeep without the transfer case. This gives you the shortest possible T5 available. I did not want to cut my cross member so I moved it back 2.625". I used a bellhousing from Vintage Precision and an adaptor from Jeep to closed drive shaft from Kato King. This all combined to make the shortest possible setup. All in, including the bell housing, the clutch assembly, the Burtz flywheel, the Kato King adaptor and shifter, the Mitchell pinion puller and the Jeep T5 I spent about $2500.00, there will be other costs no matter which way you go. A full description of the procedure along with pictures can be found here on the HAMB
https://www.jalopyjournal.com/forum/...#post-14769385 Go to entry 36. I love the T5, Installed one in my 1962 Cutlass behind the 215 V8, installed one in my 1962 Studebaker wagon behind the 259 V8, installed one in my 0930 Tudor behind a 300 Buick and now have one in my 1931 RPU. Warren |
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07-23-2023, 12:15 PM | #43 | |
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Location: now Kuna, Idaho
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Re: 5 Speed Conversion
Quote:
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07-23-2023, 01:05 PM | #44 |
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Join Date: May 2010
Location: Between Seattle & Tacoma
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Re: 5 Speed Conversion
I would like an explanation as well. The only thing I can think of is frame flex?
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07-23-2023, 03:17 PM | #45 | |
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Join Date: Jun 2010
Location: 34.22 N 118.36 W
Posts: 1,057
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Re: 5 Speed Conversion
Quote:
Most S10 conversions are open drive and the original rear radius rods are insufficient. Some of the early "kits" had an upper 3rd link that was again insufficient, don't ask how I know. At one time a torktube kit was available and it was very good. John
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07-23-2023, 03:56 PM | #46 | |
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Location: Ohio
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Re: 5 Speed Conversion
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08-10-2023, 12:52 PM | #47 |
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Join Date: Mar 2013
Posts: 79
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Re: 5 Speed Conversion
I received my kit. I am waiting on my bell housing and will probably start next week. I am going to tackle rear end first. I have a new leaf spring and want to replace that when I pull the rear end.
I bought extra snout and bearing holder. Doing as much prep work as I can. Transmission mount bolted up. |
08-10-2023, 01:08 PM | #48 | |
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Re: 5 Speed Conversion
Quote:
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08-11-2023, 02:52 AM | #49 |
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Join Date: May 2010
Location: Wa.
Posts: 5,409
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Re: 5 Speed Conversion
Here is a conversion for a model A/B block to a T5 transmission that doesn't cost anywhere near what most of them on the market do, BUT, you must be willing to do some fabrication with shop HAND power tools.
This is reprinted from an old thread. Here is an adapter to get a T5 transmission to an A/B block that can be made with NO machine tools. (lathe, mill) All you need is a sawzall, a 3/8 drill motor and some rotary files. All you need is a magnet base indicator to align it with the engine. This uses a stock Chev V8 aluminum bell housing or Lakewood scatter shield, a hydraulic clutch slave cylinder, stock Chev clutch, pressure plate, throwout bearing, clutch arm and a 12 lb CHEV aluminum flywheel. The T5 bolts right on. You can either use a Crazydaddyo adapter to torque tube or run an open driveline with beefed up center mounted radius rods. The steel bracket on the 2 inch plate mounts a Chev gear drive starter on the right side. No, I don't have any more info about it other than what is here but I know of 2 guys that made them from nothing more than the shown pic. |
08-11-2023, 07:31 AM | #50 | |
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Join Date: Mar 2011
Location: Mebane, NC
Posts: 188
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Re: 5 Speed Conversion
Quote:
1. Check your slip yoke and make sure there isn't a small vent hole at the back just ahead of where the ujoint mounts. It's not needed and if left open the slip yoke will leak when the car is parked facing uphill . 2. When installing the transmission take the input shaft adapter off of the 5 speed and slip it into the clutch disc then slide the trans into place . This will give you an additional couple inches so you can get the transmission into place. 3. Take two 3 or 4 inch long bolts of the size that hold the transmission to the bellhousing (3/8" I believe) cut the heads off of them and grind the cut ends round , screw them into the bellhousing and use them as guide pins to slide the transmission into place. Just make sure the clutch fork is in the proper location when installing the transmission. Other than those things the install is pretty straight forward and I was able to complete the install by myself. Pete |
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08-12-2023, 03:58 PM | #51 |
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Join Date: Jun 2010
Location: College Station, Tx
Posts: 326
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Re: 5 Speed Conversion
Good information I have 2 mitchells and 2 with high speed rear ends like both I live in flat country
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08-16-2023, 02:51 PM | #52 |
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Join Date: Mar 2013
Posts: 79
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Re: 5 Speed Conversion
Making some progress. Pulled rear end and fought pinion but followed the directions and got it out and adapter for the open drive line is installed. Drilled and tapped for the vent, also welded radius rods. I need to clean and paint, then install new spring and put the rear end back in.
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08-19-2023, 07:21 AM | #53 |
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Join Date: Mar 2011
Location: Mebane, NC
Posts: 188
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Re: 5 Speed Conversion
Coming along nicely....
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08-19-2023, 09:28 AM | #54 | |
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Location: Red Deer, Alberta
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Re: 5 Speed Conversion
Quote:
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08-20-2023, 06:35 AM | #55 |
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Location: Durango CO
Posts: 1,310
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Re: 5 Speed Conversion
Used 1/4” x 1” steel and welded in on the radius arms. Punched holes for looks!
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08-20-2023, 07:16 AM | #56 |
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Location: Mebane, NC
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Re: 5 Speed Conversion
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08-20-2023, 05:25 PM | #57 |
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Join Date: May 2010
Location: Southern Upstate New York
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Re: 5 Speed Conversion
Those radius rods aren't strong enough to handle the clockwise and counterclockwise torque of the rear axle even after the seams have been welded. They will handle normal acceleration and braking, but in an emergency panic stop, DRIVER BE WARE.
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08-20-2023, 07:45 PM | #58 |
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Location: Durango CO
Posts: 1,310
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Re: 5 Speed Conversion
Been 15 years and a few panic stops as well as tours in three states and no issues. Too, the engine put out 70 HP at the rear wheels. Note that the metal straps are welded on both sides of the radius rod seams. I’m well aware of what it takes to make an A go fast and stop quickly.
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08-21-2023, 10:45 AM | #59 | |
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Join Date: Jun 2010
Location: 34.22 N 118.36 W
Posts: 1,057
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Re: 5 Speed Conversion
Quote:
By adding the web to top bottom or both helps but in addition you must reinforce the fork section At one time one of the kit mfgrs offered replacement radius rods that were much stronger I run a full fender coupe with a OHV setup and have broken the stock radius rods The spring kept it all from coming apart but it only takes one experience to learn J
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08-21-2023, 05:30 PM | #60 |
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Re: 5 Speed Conversion
Can you also modify, e.g., shorten, the torque tube so you don’t have to have an open drive shaft? I recall one of the kits included a shortened torque tube.
David Serrano |
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