They published some dyno results, interesting numbers on the LS7:

http://www.ultimateheaders.com/dyno.shtml

I have these headers mocked up in my 67 Camaro. I also have the original manual clutch bell crank that came stock with the SS 350. The only problem is that I don't know where the bellcrank would attach to the LS block. If you supply that (some dimensions would be great) then I can mock up the bellcrank and get a photo for you in the next few days. Here is a photo to let you know if it would be similar enough to make a decision.

http://i.imgur.com/plzPL45l.jpg

Ultimate Hedders
 

What motor mounts are recommended for the first gen using the Ultimate hedders? I paln on running a low mount a/c on my LS3. There's no recommendations on their web site.

Thanks for the offer. However I talked to Jim at Ultimate Headers today and he had one of his techs with him. They said that their headers will not work with a mechanical clutch as the collector runs right near where the z bar would attach to the block.

FYI, if you want to run a mechanical clutch with an LS you have to drill and tap into the block to accept the z bar ball stud. So I guess if I choose Ultimates I have to run a hydraulic clutch. Decisions, decisions.

Jim is really helpful. You know I had a mechanical clutch for all those years and now I am looking forward to running a hydraulic setup. The initial cost is going to be high, but I am looking forward to easy pedal pressure, cleaner install and the more modern designed parts. Funny the grass is always greener I guess. Good luck with your decision !!

If you're running a T56, cost is pretty cheap on an OE style slave/TOB ($120 or so).. and a master cylinder kit isn't that much either, around $300-400.
The TKO is a little different story though.

-Dale

Yeah Dale, I've been pricing around for the TKO and it's gonna cost around $700.00, give or take a little. This hobby sure is expensive.

I'm looking to do an external slave rather than a hydro TOB. Novak Conversions has a ES for $208. I may be installing that with a McLeod hydro kit for the same price. I just hate the fact that if I get a leak I have to pull the tranny.

Bump. Would like some real experience feed back