Chrysler usually used Carter carburetors on their vehicles. Fords were Holley (the original 1850 was a Ford-OEM carb. The '67 NY 440/350 came with a factory Holley 4160 carb.
The Holleys, back then, were known (in the Chrysler ranks of normal owners) as needing a kit installed about every year. The Holley metering block/plate gaskets were more cork back then, which didn't help things. Funny thing is that as the Chrysler owners had issues with Holley 4bbls, similar carbs were used as replacements on GM engines and nobody typically said anything about them being maintenance issues.
On the Holley replacements I've bought, NO issues at all. As they were OEM replacements and NOT the less-expensive "speed shop" 1850s (which came with a manual choke and generic jetting), they all worked very well. NO issues with needing to kit them yearly, either! Of course, Holley improved their metering block gaskets, too, over the years. I started with a 4160, then replaced it with a 4175 spreadbore, after about 150k miles or so. Mpg went up 2+mpg, average.
The Holleys are MORE tuneable, if you desire to do that. Multitudes of jets, secondary springs, etc. I feel their accel pump is crisper, for a little better off-idle response, rather than the dribbles that came from my OEM Carter AVS. But my '70 Monaco 383 AVS seemed to get better fuel economy than a friend's '69 Bee 383 with the factory Holley 4160. But his Holley had off-idle response I could never get out of my AVS, no matter how much I tweaked it.
In 1971, the 383 HP B-body used a special Holley 4160 that was 750cfm, but not a 3310. It had 1.75" secondaries and 1.56" primaries. rather than the 3310s 1.690" throttle bores all the way around. That same part number is still in the books, but now has the "cathedral" race bowls, electric choke, and universal throttle linkage. Last time I looked, it was still available for a price that was less than a similar 3310 with similar goodies on it. Jetting is not OEM, though.
When Chrysler went to the Holleys in the later 1960s, the local dealership retro-fitted prior year Carters in their place when the owners complained about the yearly "kit" need. Put the Carter on and that was the end of that. The dealer also didn't order muscle cars which came with Holleys, due to the maintenance issues, back then. I heard about warped metering blocks, but never saw any. Might have been the poor gaskets? Back then, if the car dealer couldn't get what you needed, or the local auto supply, you were "up the creek . . ." Speed shops were in larger towns, a good distance away, so nobody locally usually knew about Holley carbs or getting parts for them. Therefore, the Carters give less trouble and people liked that.
Now, for a blend of Carter and Holley, you can check out the Street Demon carb (650cfm) that is the prior Carter Thermoquad architecture and built by Holley.
There is ONE issue with Holley 4160-style carbs. The placement of the accel pump diaphragm at the bottom of the primary float bowl. As ethanol gas does bad things to rubber, having a rubber diaphragm on the bottom of a float bowl, just above a hot manifold, might be an issue! Even if the diaphragm is of ethanol-resistant rubber, if the carb sits dry for any period of time, that rubber can become brittle. Add new fuel and restart it, leaks might well happen. In that respect, either the Edelbrocks or Street Demon would be a better deal, either way.
Summitt Racing and others usually have some sales on the Edelbrocks, Holleys, and Street Demons every so often. WATCH for them! The Street Demon also has the phenolic fuel bowl option, for even MORE of a Thermoquad look!
CBODY67
