C3 General General C3 Corvette Discussion not covered in Tech
Sponsored by:
Sponsored by:

4 to 5 speed shoestring conversion finished.

Thread Tools
 
Search this Thread
 
Old Nov 20, 2010 | 05:07 PM
  #1  
John 65's Avatar
John 65
Thread Starter
Le Mans Master
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Dec 2003
Posts: 5,381
Likes: 416
From: N J
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
Reply
Old Nov 20, 2010 | 05:33 PM
  #2  
Mick71's Avatar
Mick71
Melting Slicks
15 Year Member
All Eyes On Me
Liked
Loved
 
Joined: Nov 2010
Posts: 3,363
Likes: 32
From: Bowtie, Pennsyltucky
St. Jude Donor '13-'14-'15,'21
Default

Nice!
Reply
Old Nov 20, 2010 | 05:35 PM
  #3  
dugcyn's Avatar
dugcyn
Instructor
 
Joined: May 2009
Posts: 125
Likes: 0
From: tacoma wa
Default

nice job. ya wanna do mine next. lol
Reply
Old Nov 20, 2010 | 05:36 PM
  #4  
MakoVette's Avatar
MakoVette
Racer
10 Year Member
 
Joined: Jan 2006
Posts: 261
Likes: 1
From: hidden valley lake Ca
Default

Very nice
Reply
Old Nov 20, 2010 | 06:30 PM
  #5  
oldC3guy's Avatar
oldC3guy
Instructor
 
Joined: Sep 2010
Posts: 236
Likes: 0
Default

Great work! Better than new. I want to do something like this. Low gears and good highway RPM's. Perfect.
Reply
Old Nov 20, 2010 | 06:58 PM
  #6  
Vette5.5's Avatar
Vette5.5
Le Mans Master
 
Joined: Sep 2004
Posts: 5,116
Likes: 5
From: Livonia MI
Default

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.
Reply
Old Nov 20, 2010 | 07:41 PM
  #7  
DZRick's Avatar
DZRick
Le Mans Master
10 Year Member
 
Joined: Jun 2005
Posts: 5,447
Likes: 3
From: Syracuse NY
Default

Nice job, John.
Reply
Old Nov 20, 2010 | 09:50 PM
  #8  
John 65's Avatar
John 65
Thread Starter
Le Mans Master
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Dec 2003
Posts: 5,381
Likes: 416
From: N J
Default

Thanks guys, and thanks to Mike aka Mysixtynine on the forum for all the help.
Reply
Old Nov 20, 2010 | 10:47 PM
  #9  
fauxrs's Avatar
fauxrs
Le Mans Master
15 Year Member
 
Joined: Nov 1999
Posts: 5,768
Likes: 3
From: San Diego CA
Default

good ol' fashioned engineuity and fabrication skills FTW
Reply
Old Nov 20, 2010 | 11:00 PM
  #10  
Nowhere Man's Avatar
Nowhere Man
Team Owner
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Feb 2003
Posts: 54,103
Likes: 9,418
From: Sitting in his Nowhere land Hanover Pa
2024 C2 of the Year Finalist - Unmodified
2015 C2 of Year Finalist
Default

will that trany hold up to the BB torque
Reply
Old Nov 20, 2010 | 11:02 PM
  #11  
John 65's Avatar
John 65
Thread Starter
Le Mans Master
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Dec 2003
Posts: 5,381
Likes: 416
From: N J
Default

Gosh I hope so.
Reply
Old Nov 20, 2010 | 11:16 PM
  #12  
Nowhere Man's Avatar
Nowhere Man
Team Owner
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Feb 2003
Posts: 54,103
Likes: 9,418
From: Sitting in his Nowhere land Hanover Pa
2024 C2 of the Year Finalist - Unmodified
2015 C2 of Year Finalist
Default

I hope you did more research into that then what I was always told about them. good luck
Reply
Old Nov 21, 2010 | 02:12 AM
  #13  
Vette5.5's Avatar
Vette5.5
Le Mans Master
 
Joined: Sep 2004
Posts: 5,116
Likes: 5
From: Livonia MI
Default

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.
Reply
Old Nov 21, 2010 | 02:47 AM
  #14  
another-user's Avatar
another-user
Safety Car
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Jun 2005
Posts: 3,775
Likes: 4
Default

dont those things tend to go boom with anything more then about 300ft/lbs of torque?
Reply
Old Nov 21, 2010 | 09:02 AM
  #15  
c3_dk's Avatar
c3_dk
Safety Car
15 Year Member
All Eyes On Me
Photogenic
Photoriffic
 
Joined: Jan 2008
Posts: 3,795
Likes: 434
From: Aarhus, Denmark
Default

This is very nice, I love to see that things doesn't have to cost big $.
Reply
Old Nov 21, 2010 | 09:38 AM
  #16  
John 65's Avatar
John 65
Thread Starter
Le Mans Master
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Dec 2003
Posts: 5,381
Likes: 416
From: N J
Default

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.
Reply
Old Nov 21, 2010 | 09:42 AM
  #17  
Corey_68's Avatar
Corey_68
Team Owner
25 Year Member
Loved
Community Favorite
Top Answer: 1
 
Joined: Feb 1999
Posts: 34,454
Likes: 665
From: Republic of Texas
Default

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; Nov 21, 2010 at 10:26 AM.
Reply

Get notified of new replies

To 4 to 5 speed shoestring conversion finished.

Old Nov 21, 2010 | 09:45 AM
  #18  
John 65's Avatar
John 65
Thread Starter
Le Mans Master
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Dec 2003
Posts: 5,381
Likes: 416
From: N J
Default

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.
Reply
Old Nov 21, 2010 | 09:56 AM
  #19  
Corey_68's Avatar
Corey_68
Team Owner
25 Year Member
Loved
Community Favorite
Top Answer: 1
 
Joined: Feb 1999
Posts: 34,454
Likes: 665
From: Republic of Texas
Default

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; Nov 21, 2010 at 10:27 AM.
Reply
Old Nov 26, 2010 | 05:33 PM
  #20  
MotorHead's Avatar
MotorHead
Race Director
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 2000
Posts: 17,676
Likes: 201
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
Default

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
Reply



All times are GMT -4. The time now is 03:43 PM.