anybody have any experience with those progressive 2bbls off the chevy vegas, and monzas? I know there holleys. my dad is convinced that those are awsome carbs. I was gonna go with a holley 2300 350cfm, but he thinks one of those are better. I found a few on ebay for a good price. Ive never tuned on one, so I dont know anything about them. any opinons?
progressive 2bbl?
- Thread starter pro94
- Start date
The tuning works the same a the Weber 32/36. There is a sticky about tuning with them. There is also some good tuning info at Weber Redline's wedsite.
There are differences in the numbering system on the jets, but the method still applies.
Performance wise, the Holley 2300 will give more power and throttle response. ( In my opinion)
There are differences in the numbering system on the jets, but the method still applies.
Performance wise, the Holley 2300 will give more power and throttle response. ( In my opinion)
bigcatchdaniel555
Well-known member
the holley / weber progressive carbs are great carbs once they are jetted but since they were originally designed for smaller motors like pintos and vw bugs they take a lot of jet changes. Refer to the sticky at the top of the page i personally support the holle 2300. Thereason being they are availavable new so parts are easy they are a bolton and go carb also they allow for future upgradeswhile they are not progressive they will suffer the fuel economy a bit but as long as you dont stick your foot in it its not too bad.
THe 5200 series Holley / Webers make great carbs for daily use. The progressive 2bbl allows small jet idle and low power cruising with decent MPG and stable low throttle response. Open up past @ 2/3 throttle and depending on other mods - you can get enough more air to provide real power.
There is one on the '63 170 Wagon with the "Stovebolt" 2bbl adapter. A little creativity with the Air Cleaner allows for hood clearance.
Due to the wide range of applications they were used for, the H/W's vary widely in there usability. A carb that worked for the 170 - with original jetting was for the V6 Capri application. (2.8L ?).
Trials with 2300 (350cfm) series had good performance results with less stability at low throttle and fuel use increase on the 170. For performance alone, the 2300 series is simple.
Powerband
There is one on the '63 170 Wagon with the "Stovebolt" 2bbl adapter. A little creativity with the Air Cleaner allows for hood clearance.
Due to the wide range of applications they were used for, the H/W's vary widely in there usability. A carb that worked for the 170 - with original jetting was for the V6 Capri application. (2.8L ?).
Trials with 2300 (350cfm) series had good performance results with less stability at low throttle and fuel use increase on the 170. For performance alone, the 2300 series is simple.
Powerband
The Holley 5200 is a great carb for smoother running over the stock carb and delivers great MPG and yet you still get more performance over the stock carb. It all depends on how much you plane to do to your engine and what your goal is? They put out about 240-265 CFM depending on the modrl it was made for, but there fine and not hard to tune, and you can get new rebuilt ones from www.stoveboltengineco.com currently $65.00 
and they are a great company to deal with and he has extra jets for the carbs.
and they are a great company to deal with and he has extra jets for the carbs.
Soldmy66":3uq9ip4u said:
Using them as dual - 2BBl's would be a great idea but logistically difficult due to the "log" not readily adaptable to "two holes". Here's a setup I tried for a while on the Clifford 250 performance mill. A 350 CFM 2300 in the main - center and two Holley 1904's on the end positions:
Powerband
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