webebob - You kiss your Momma with that mouth?
FWIW - Every BG carb you buy just makes Holley richer too. That's what licensing of patented technology does for you. Even though BG has changed the size and look of the float bowels, they still have the exact same float mechanisms, adjustment, etc. Literally all the gaskets for the Demon series carbs can be purchased from Holley. You can even mix and match many parts from both manufacturers. If you look closely enough at the Billet components at Holley, you may see that they could have been manufactured by BG for Holley. I don't know that this is the case, but I wouldn't be surprized.
PJS50 - BG makes a fine product - don't get me wrong here. Their have been cases of QC issues in regard to scrap from machining processes inside the carbs. If things don't seem right - a quick disassembly and cleaning may be in order.
The 830 Holley you are talking about is the Keith Dorton carb - yes it's pricey, but it is the very same carb that is used on virtually all NASCAR Nextel Cup engines.
I do not work for Holley or any of it's related companies. I'm just a believer in their product lines.
Here is the run-down on their carbs from 830-870 CFM in the 4150 variety:
http://www.holley.com/HiOctn/ProdLin...C/0-4781C.html
Part #: 0-4781C
850 CFM Four Barrel
Features
Model 4150 w/ center hung floats
Unique shiny/chromate dip finish
Double pump
Mechanical secondaries
Manual choke
Power valve blow-out protection
Four-corner idle system
100% wet-flow tested and calibrated
http://www.holley.com/HiOctn/ProdLin...C/0-80785.html
Part #: 0-80785
830 CFM Four Barrel
Features
Intended for circle track racing
Special Keith Dorton calibration for gasoline
Model 4150 HP with mechanical progressive linkage
Center hung float bowls with dual 30cc accelerator pumps
Screw-in air bleeds
Four-corner idle system
Power valve blow-out protection
Non-stick reusable gaskets
Stainless steel throttle plates w/ button head screws
100% wet-flow tested and calibrated
http://www.holley.com/HiOctn/ProdLin...C/0-80870.html
Part #: 0-80870
870 CFM Four Barrel
Features
Model 4150 w/ center hung floats
Electric choke
Quick-change vacuum secondary
Ford A/T kickdown
Power valve blow-out protection
4 Vacuum ports (PCV, power brake, spark, accessories)
Lifetime limited warranty
100% wet-flow tested and street calibrated
Hybrid Mode
