Anybody Actually Goin' Fast With a Holley 3 BBL?

[markjohnson]

We're fine. I'm feeling a little less "punchy" tonight. I like that word. Anyway, it's been many years since I messed with those 3BBL's. Just about 20 years ago, in fact, but a lot of it is still clear to me. I never had a chance to take that L-88 to the track while the 3 BBL was on it, but I did run it with the 850 and ran 11.70's with a 3.70 rear gear and I was actually pretty happy with it for the time. I have found another 3 BBL here in St. Louis that actually is already equipped with one the Motion Gear Drive Injector kits and it kinda peaked my interest in fooling around with one again. I'll add this too.......when I dis-assembled my 950 with that optional rear Secondary Metering Block, I noticed that the rear Secondary Boosters are a little closer together than they are in a standard 4 BBL and that the fuel passages in that metering block may not be lining up with the passages in the main carb body. Never noticed this when I first worked on it but I wish I would have. They say the Secondary Diaphrams are not manufactured anymore so treat any of them gently. Holley does make one that can be made to work (#135-6) but it requires some tricky surgery. As far as adjustable air bleeds, I have them on my 950 HP but have been advised by some people much smarter than me to leave them alone and I have heeded their advice. On an interesting note.......there used to be a Drag Radial class that required use of a single 4150 Holley (no Dominators) and we had talked of taking TWO used-up swap meet 3 BBL's and building a 'ringer' carb by using the large oval butterfly throttle plate on the Secondary AND Primary sides. That would have been interesting!