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4 to 5 speed shoestring conversion finished.

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Old 11-20-2010, 05:07 PM
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John 65
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Default 4 to 5 speed shoestring conversion finished.

Just been finishing up the shifter relocation, the last peice of a puzzle for my low budget 5 speed conversion that I have been tinkering with on my 68. I went with a world class t5 from a late 80's camaro. Sold the hurst shifter it came with because it came up to high in the console, and sold the bellhousing and some hydraulic parts attached to it. Got a new clutch, had the driveshaft shortened, picked up a 35.00 mustang shifter from ebay, and also a set of plates to make the crossmember removable from Kevin here on the forum. In the end I am into the project for around 350.00 Re-worked the rear transmount, the exhaust hanger, and the shifter location to look stock. I think it came out real nice, no vibrations. So far so good, been driving it since the spring with the hurst shifter, it really spoiled me, but to look correct in the console the mustang sfifter worked better. 70mph in 5th is 1750 rpms with 3:70 gears. Heres a few pics. You ca see the crossmemer here, with the hurst.

rear mount. put trans straight, tilted mount to match.

same with exhaust mount

shifter

in car
Old 11-20-2010, 05:33 PM
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Mick71
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Nice!
Old 11-20-2010, 05:35 PM
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dugcyn
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nice job. ya wanna do mine next. lol
Old 11-20-2010, 05:36 PM
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MakoVette
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Very nice
Old 11-20-2010, 06:30 PM
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oldC3guy
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Great work! Better than new. I want to do something like this. Low gears and good highway RPM's. Perfect.
Old 11-20-2010, 06:58 PM
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Vette5.5
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Wow, look's like your labor and ingenuity really paid off, as have a friend who went with the Keisler kit and was in the thousand's. Like you, his car's a 3.73 axle and sure is nice on the highway with that o.d. He also has the 5 speed console shifter plate, and maybe availible seperately. Anyway, very nice work.
Old 11-20-2010, 07:41 PM
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DZRick
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Nice job, John.
Old 11-20-2010, 09:50 PM
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John 65
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Thanks guys, and thanks to Mike aka Mysixtynine on the forum for all the help.
Old 11-20-2010, 10:47 PM
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fauxrs
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good ol' fashioned engineuity and fabrication skills FTW
Old 11-20-2010, 11:00 PM
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Nowhere Man
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will that trany hold up to the BB torque
Old 11-20-2010, 11:02 PM
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John 65
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Gosh I hope so.
Old 11-20-2010, 11:16 PM
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Nowhere Man
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I hope you did more research into that then what I was always told about them. good luck
Old 11-21-2010, 02:12 AM
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Vette5.5
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You'll probably be fine with the T5 mounted behind a BB, long as it's on street rubber which will usually spin before breaking anything. Also, are you sure about the 70 mph @ 1750 rpm cruising, as my experience with a .70 o.d tranny feeding 3.73 rear's is more like 2200.
Old 11-21-2010, 02:47 AM
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another-user
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dont those things tend to go boom with anything more then about 300ft/lbs of torque?
Old 11-21-2010, 09:02 AM
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This is very nice, I love to see that things doesn't have to cost big $.
Old 11-21-2010, 09:38 AM
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John 65
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Originally Posted by Vette5.5
You'll probably be fine with the T5 mounted behind a BB, long as it's on street rubber which will usually spin before breaking anything. Also, are you sure about the 70 mph @ 1750 rpm cruising, as my experience with a .70 o.d tranny feeding 3.73 rear's is more like 2200.
I believe its .6 something but now that you mention it perhaps it needs the correct nylion speedo gear. Going to have to check that. thx. Yes there isnt much traction back there, hopefully that will keep things from going bang. Its just a fun driver car, it dont see a track. An occasional blow it out on the highway every now and then at best.
Old 11-21-2010, 09:42 AM
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Corey_68
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Originally Posted by Nowhere Man
will that trany hold up to the BB torque
Considering GM felt it was too weak to put behind a 225hp V8 Camaro/Firebird, it may/OR may not be short lived behind a Big Block..

That said, with it behind a mild BB and no powershifting, clutch dumps with sticky tires it may very well work without issues

Last edited by Corey_68; 11-21-2010 at 10:26 AM.

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To 4 to 5 speed shoestring conversion finished.

Old 11-21-2010, 09:45 AM
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John 65
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Didnt that fellow Norvill, I believe his name was here on the forum, have 1 behind his blown motor without any problems. Hey what can ya do, if it goes it goes. Just having some fun.
Old 11-21-2010, 09:56 AM
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Corey_68
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Originally Posted by John 65
Didnt that fellow Norvill, I believe his name was here on the forum, have 1 behind his blown motor without any problems. Hey what can ya do, if it goes it goes. Just having some fun.
Yeah, not sure if Norvill's was modified or not (they can be built to handle much more power). But with their availability if it goes, it can be easily replaced. In the meantime enjoy the car, I'm sure the extra gear will be much welcomed.

Last edited by Corey_68; 11-21-2010 at 10:27 AM.
Old 11-26-2010, 05:33 PM
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MotorHead
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Not necessarily the wham bam from a 5000RPM launch that kills them, other parts will probably go first. From my experience with weaker trannies ( 2 Super T10's ) was extended torque like low RPM's in second gear for example and matting it to 5000RPM or so the case gets twisted / distorted and this causes everything to start to get out of line then you get your blowed up tranny


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