Joined: Sat Mar 25 2006, 07:31PM
Location: Nebo, NC
Posts: 86
John,
625 CFM is too small for your 440. You should use a 750 CFM carb minimum. All AFB/AVS carbs with a matched 1-11/16 primary and secondary are about 750 CFM, hence adequate.
Please let me know if I can be of help in the future; advice is always free.
Joined: Sat Dec 10 2005, 04:28PM
Location: United States
Posts: 4954
The original Holley 4160 was a 600 CFM. He's actually gone up on that. I would think the 440 should have the same thing as you said, but didn't. That's the original carb on the car.
Big John. . .Get yer big foot up here witht he car and let's see what we can do to get all this straightened out. Now that the Holley is gone, i have a fighting chance.
Joined: Wed Oct 12 2005, 12:21PM
Location: Jersey, the only state that doesn't need the New...
Posts: 676
the old holley was replaced with a newer holley steve.... still 600 cfm.... but its electric choke.... think of it as a loner becasue if i cant get the throttle to close she be moving up to something in the 700's
Im really thinking about going to the larger cfm...
got start buying scratch off tickets... lol
again thanks for the advice, since i've gotten this car, it hasn't breathed right...
Joined: Sat Dec 10 2005, 04:28PM
Location: United States
Posts: 4954
Like I said John
Bring it up, but buy the linkage adaptor first. I'll get it straightened out. I have a fighting chance now that the Holley is gone. It's a mental block thing
Joined: Sat Mar 25 2006, 07:31PM
Location: Nebo, NC
Posts: 86
John,
I neglected to mention that what you have now is an "aftermarket"-type Holley, crafted in a special corner of the Hot Place by the Devil himself; the electric choke is the tip-off. It was probably built for a Chevy so you may find that adapters are required to run it on a Mopar. Don't put a lot of time and $$$ into it.
BTW, I'm assuming that you are the subject of the "Next Generation" column in February's Hemmings Classic Car based on your avatar photo. Congrats! I started down the C-body road early myself with a hand-me-down '66 Newport sedan at 17 and a '67 Fury III ragtop at 18 . . . but that was all 28+ years ago! It's not a hobby, it's a habit.
And Steve,
I thought that all of the carbs with four 1-11/16" throttle bores were 750 CFM, regardless of whether they were Carter or Holley. If memory serves, the Holleys I removed from my 440s were 1-11/16" x 4. Is my memory faulty, or were these carbs never 750 CFM to start with?
Jeff <span class='smallblacktext'>[ Edited Tue Apr 18 2006, 08:44AM ]</span>
Joined: Wed Oct 12 2005, 12:21PM
Location: Jersey, the only state that doesn't need the New...
Posts: 676
Good eye, its too bad i dont get a cover spot on the homepage...lol
But yes thats me thanks alot. The guy that did the article got a few things wrong... said i have a 400 instead of the 440, and i actually got pulled over my first day of driving which was in a 74 New Yorker Brougham, 4 drhdtp... But it still is really cool to have your picture in print (for something good) thanks again...
Any good suggestions for a carb that will just bolt right up, give decent perfromance and not cost an arm and a leg... as in sub 300 bucks.
Something so that i can go to the auto store and say "i want one of these"...
ive got an idea about this cfm stuff but i still dont understand what the best route... to be honest this carb doesnt really pull like the old one did... and steve can atest to how messed up it was.
Joined: Sat Mar 25 2006, 07:31PM
Location: Nebo, NC
Posts: 86
John,
Check out what Summit Racing or Jegs Performance offers for under 300 bucks. You may still be able to get a Carter AFB with an electric choke and a Chrysler linkage for under 3 bills, but I am not sure that the 750 CFM version can be had that cheap. Still, even a 625 CFM Carter is better than what you've got. Mail-order places are your best bet to save some bucks.
If you go the auto parts store route, you will have to buy an Edelbock Performer along with the adapter(s) to install your Chrysler cable onto its Chevy throttle lever. I bet that ANY of these will exceed $300, regardless of CFM. But price 'em anyway.
Can the aftermarket Carters(Edlebrock) electric chokes be removed and then use the original Chrysler divorced choke spring in the manifold? I think this would be a simpler route to go. Just wondering, thanks
Joined: Sat Mar 25 2006, 07:31PM
Location: Nebo, NC
Posts: 86
70NEWYORKER wrote ... Can the aftermarket Carters(Edlebrock) electric chokes be removed and then use the original Chrysler divorced choke spring in the manifold? I think this would be a simpler route to go. Just wondering, thanks
Not easily. The original AVS configuration had a vacuum choke pull-off mounted where the entire choke assembly (pull-off included) is on an aftermarket Carter or Edelbrock. It also had a special lever on the end of the choke shaft to accomodate both the pull-off and the choke stat links. You would need a donor carb from which to scavenge these parts. Such a conversion would probably have to be done only with an Edelbrock AVS Thunder series ($$$) due to choke shaft location, but I have never attempted it. Best for John just to buy a cheaper AFB and live with the electric choke.
He came by today, the kickdown just wasn't adjusted properly. Worst of all it was only running on 300 cfm because the secondaries were beign held closed by his old mechnical choke housing. Carb was in fine working order on my 318. And seems like it is now working pretty well on his 440. Couldn't see any cause to the throttle sticking problem, unless maybe it was related to the secondaries hitting the choke housing, maybe they were in a position where they would stick ever so slightly open ?? Let me know if it happens agian john, we'll take a closer look.
