I know that this issue has been around - I've read most all of the threads concerning the use of the #11 plate.
For my '98 12v manual I wanted to use #11 to avoid some of the smoke/breakage/EGT issues which I saw as coming with using #10, but I've also installed 3K GSK springs. I just want this truck to run sweet on the street at about 300 hp or less. I was having quite a bit of trouble getting the engine to run right - low power at low RPM, weird fuel cutoff right at 3000 rpm, and other problematic things that I don't remember now. It's why I did all the reading. I adjusted the governor lever up and back down over that huge #11 proboscis, and tried various depths of the GSK nuts. I'm so sick of taking all of that stuff off to get in there! A 14 ci turbo housing only makes it worse.
So I finally asked Mark at TST either to send me a #10 or give me their answer for this combination.
Mark wrote back "We do NOT recommend the #11 or the #12 plate with the GSK springs. You'll have no low end power".
Just like that. Thought I ought to pass it along.
(I'll be using #10)
For my '98 12v manual I wanted to use #11 to avoid some of the smoke/breakage/EGT issues which I saw as coming with using #10, but I've also installed 3K GSK springs. I just want this truck to run sweet on the street at about 300 hp or less. I was having quite a bit of trouble getting the engine to run right - low power at low RPM, weird fuel cutoff right at 3000 rpm, and other problematic things that I don't remember now. It's why I did all the reading. I adjusted the governor lever up and back down over that huge #11 proboscis, and tried various depths of the GSK nuts. I'm so sick of taking all of that stuff off to get in there! A 14 ci turbo housing only makes it worse.
So I finally asked Mark at TST either to send me a #10 or give me their answer for this combination.
Mark wrote back "We do NOT recommend the #11 or the #12 plate with the GSK springs. You'll have no low end power".
Just like that. Thought I ought to pass it along.
(I'll be using #10)