ORIGINAL: HerrSavage
The old Sportwerks 26 carb has a .9mm insert, but I personally didn't like it. I had two SW 26's and for me they just didn't tune as well,and frankly didn't seem as powerful. For a while I had one in a Savage that did rev really really high.. But it didn't live all that long...
Its too bad so many websites dont publish the size of the carb.. I've had a hard time nailing down what other carb is bigger w/o having to buy a half dozen to measure myself. I had a spare 427 carb laying around so I took my dremel after it. I opened it up to about 8.2mm but the venturi isnt perfectly round and I cant just take a drill bit and drill it out because of the little knob that pokes out for the idle needle. I haven't ran that carb yet, but I was going to try it for the heck of it. The 427 carb tunes perfectly fine, I just think its too small. Maybe I can find a 454 carb on the 'bay for cheap.