Topic: converting to a 6 speed.
in Forum: C3 Driveline Components
There's a lot of good and bad things said about Keisler. I've heard good things from the Corvette crowd and the Mopar people hate him. The magazine reviews are usually very good, but when you identify yourself as a magazine writer doing a review on their product, I would think you would get good service and carefully gone over parts.
One of my hot rod friends was telling me the other day that the best one to put in was the Nash or Richmond tranny. He said that this was because it was a true one for one gear change. I don't know if this is true but thought I would tell you.
I personnally like the info and links that Ben has on his site about this http://www.vetteprojects.com/cthulhu/trasmission_search.html
I was thinking about the TKO-600 but it will have to wait now that I spent all my money on the new offset t-arms and steeroids
L48, 4 Speed, Dual Exhaust

You can find detailed info here about a TKO 5-speed swap.
http://www.classicchevy5speed.com/tremec_transmission_1968_c orvette_wu.htm.
6- speed swap will require mods to the tunnel and is generally a more difficult install.
Feel free to call with questions.
Sorry for not responding last week, I had to go out of town and had no internet access.
Thanks Guys for the input. I really don't want to do any modifications to the car. It's all original and I want to keep it that way. It looks like the 5 speed is the way to go. I just want to keep the RPM's low due to I only use it for going to meets out of town. Does any one know how to figure the RPM's for the 5 speed vrs. the 6 speed with a 3.08 gear and stock tire size. Right now at 70 mph I'm doing about 2750 rpm with the stock tranny.
It's at the Keisler Auto website and is the calculator for rpm's and speed with their 5- and 6-speeds transmissions.