Thread: 6Spd Tremec into a '66 Chevelle
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02-12-2011 02:57 PM #1
6Spd Tremec into a '66 Chevelle
This car was an original 4spd car, and the owner wanted to upgrade to 6 sp. He bought a complete kit - they didn't explain the kit is designed for a 5speed and nothing would fit like they said it would. Typical 'kit'
I had to cut out the entire trans tunnell, leaving a lip from the firewall. The bolts from the clutchcan to the trans cannot be accessed from below, the tunnell will have to be watertight, removable and seal to the driveshaft tunnel. I decided 18ga for the sheetmetal and since the floor was now weak from cutting it would have to have some reinforcement.
The 1st pic shows the one of the floor reinforcement strips and the new halo i made for the tunnel lip, they have 1/4-20 captive nuts welded into them.
The 2nd pic is the nut receiver strips welded in, trans is pulled back from the clutch can (sfi QuickTime can, McLoed 2disc clutch).
The 3rd pic is the transtunnell, basic forming, this is just what i rolled out to start with.
The 4th pic is the tunnell, now better developed, bolted into the floor etc in a trial fit.
The 5th pic is the Tremec bolted to the can, now you can see why the tunnell has to be removable. The tranny is huge, this version here is good to 700ft lbs of torque, i'm told (i just hope it wasn't from the same guy that sent the template to cut a little piece out of the tunnell).
5 pics is all they'll let me load. I have a couple more to complete the installation and they're on the next post.
thanks for looking, oj
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02-12-2011 03:11 PM #2
the 6th pic is the tunnell, better developed, in for a trial fit. The tranny is bolted up. shifter in place. Pockets had to be cut into the tunnell for the console, tail section has yet to be made.
The 7th pic is the finished tunnell test fitted, the tail section joins to the driveshaft tunnell - it is abbreviated because for glove box clearance in the rear of the console. The tunnell is bolted in with 14 1/4-20 fasters and makes the entire area very strong. The welding is left 'as is', no finishing, stretching, planishing nothing.
This took me longer than a half a day.
Thanks for looking, oj
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02-18-2011 06:49 PM #3
Trans tunnel looks good but molded carpet will no longer fit that car,its time for custom cut and sew now.
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02-19-2011 04:24 AM #4
You're right about the carpet. Worse than that, i finished it yesterday and did the test drive and it was all ok. The owner drove it home, about 30 miles, highway speed and by the time he got home the tranny ate up 4th gear! There are a few phone calles being made! I am just sick.
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02-20-2011 03:05 PM #5
I hate when things like that happen.
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02-21-2011 06:18 PM #6
Hi ojh,
Are you using a mechanical clutch linkage?Mike Forte
Forte's Parts Connection
40 Pearl St
Framingham, Ma 01702
mike@fortesparts.com
fortesparts.com
Tremec Elite Distributor of T-5, T-56, T-56 Magnum, TKO-500 & TKO-600
30th year in business
Welcome to CHR. I think that you need to hook up your vacuum advance. At part throttle when cruising you have less air and fuel in each cylinder, and the air-fuel mixture is not as densely packed...
MSD 8360 distributor vacuum advance