Silver Sport LGT-700?

I thought the LSX454 was targeted at drag racing. Not sure why you selected it aside from displacement....

Don

Im lost on unwillingness to cut for a t56 but you cut for minitubs. Is it just because the paint work is done?

I've run TKO 500s, 600s and a T56. Never any shifting issues.

For the LSX I would go TKO600 over the 500. Ran one in a ZZ502 in a 67 Camaro. No cutting involves that I'm aware of.

Also the iron block is fine. you'll never even notice the extra 100 lbs.

I would never put a TKO 500 or 600 in some thing you want to shift fast with any kind of horsepower. They just don't shift as smooth as a t56. We are building a 35 Chevy in the shop with a 350hp small block and we installed a Mcleod 5 speed to give it a try. But we have no intentions of anything more then a few burnouts.

If you really going to try and be competitive with the car the aluminum block is a huge gain over that very heavy cast block.

:yes: T56 mag vs.TKO. Indoor vs. Outdoor plumbing.

I agree however the T56 is going to require a tunnel mod which he dies the want to do.

I ended up putting in a new floor in it since the previous owner had done a hack job on the original tunnel. I spent a small fortune on the bodywork and NOS panels so hate to cut it up.
I do not intend on this being a track car. I plan on doing power tours, drive it to events, and have a car that is enjoyable and comfortable to drive. With this in mind, what combination of motor/trans would be ideal? I am conscientious of return on investment so an LS motor is a must.

If built my car over again, the first change on the list would be slicing the tunnel and a 56mag. I was never happy with the tko. It's cheaper to do it right once.

My 1st choice of transmissions would be a T56 Magnum but it might require a tunnel mod. If a tunnel mod is not an option then the 2nd choice would be the LGT-700 5 speed. 3rd on the list would be a TKO 600. I don't think Tremec even makes the TKO 500 any more since it is not listed on their site.

Thanks for the opinion and ranking of the transmissions. I am going to look closer at the T56 and specifics on what it will take to install it. I read a Super Chevy article on installing it in a 2nd Gen Camaro and but it didn't go into details on the modification required.