My 440 is AWAKE!

Posted By: bobs66440

My 440 is AWAKE! - 10/14/12 10:53 PM

Wow! I'm running a dual (600cfm) quad setup on my rebuilt 440. I've always run the carbs with the progressive linkage because I always thought that having them both come in at the same time would be way too much. I would have the secondary carb come in after about 1/2 throttle of the primary and they would both get full throttle at the same time. But it always seemed a little sluggish off the bottom end. Not terrible, but not what I would have hoped for.

So after reading another thread regarding this, I decided on our cruise today to try it 1:1...both carbs opening at the same time. HOLY CRAP! What a difference! Totally different animal now! Woke that baby RIGHT up! VERY much fun to play with on the street

Super responsive off the bottom through mid range. She'll FRY the tires now!

Top end is the same, but that's expected.

The bad news is that I can actually watch the gas gauge go to "E" at a rate I've never seen

Still, it sure is FUN now!

Glad I read that thread!!

Thanks guys!

Posted By: RapidRobert

Re: My 440 is AWAKE! - 10/14/12 11:01 PM

You sound pumped! I have a pair of 4131S AFB's which are smaller than 600 CFM going on a dual quad 451 & was wondering if I should go progressive or not as this is my 1st dual quad setup so after your experience I will make em 1:1 & go from there. EDIT it's an iron single plane OE B intake

Posted By: 2boltmain

Re: My 440 is AWAKE! - 10/15/12 12:22 AM

The wide 440 looks so right with dual carbs. How about a pic?

Posted By: CrAzYMoPaRGuY

Re: My 440 is AWAKE! - 10/15/12 12:35 AM

Awesome Bob!

Posted By: bobs66440

Re: My 440 is AWAKE! - 10/15/12 01:52 AM

Quote:

The wide 440 looks so right with dual carbs. How about a pic?

Here's the beast!

Posted By: CrAzYMoPaRGuY

Re: My 440 is AWAKE! - 10/15/12 02:14 AM

GORGEOUS car, inside and out.

It's great to see you tweaking it in a way that makes a difference!

Posted By: 2boltmain

Re: My 440 is AWAKE! - 10/15/12 11:28 AM

Awwwww very neat- you are running an old Offenhauser. Dont see them anymore. I have an Offy 2x4 for 273/318 purchased brand new from Summit in 2003 that is destined for my 360. Nice!

Posted By: bobs66440

Re: My 440 is AWAKE! - 10/15/12 01:04 PM

Quote:

GORGEOUS car, inside and out.

It's great to see you tweaking it in a way that makes a difference!

Thanks. Yes, it's not often I get the chance to do very little work for a huge result. Usually I work all day to go one step backward

Quote:

Awwwww very neat- you are running an old Offenhauser. Don't see them anymore. I have an Offy 2x4 for 273/318 purchased brand new from Summit in 2003 that is destined for my 360. Nice!

Thanks. Yes, that's an Offy. I was thinking about switching it out for an Edelbrock CH28. I've heard they work a little better. It's not in the budget right now though.

Posted By: bobs66440

Re: My 440 is AWAKE! - 10/15/12 01:14 PM

Quote:

You sound pumped! I have a pair of 4131S AFB's which are smaller than 600 CFM going on a dual quad 451 & was wondering if I should go progressive or not as this is my 1st dual quad setup so after your experience I will make em 1:1 & go from there. EDIT it's an iron single plane OE B intake

Yes, I would do that. The funny thing is, when I bought the car (stock tired engine) he had it set up like that and it was a dog. WAY too much carburetor. SO I set it up progressive and it was much better. Then, when I rebuilt and modified the engine with better cam, .030 over, Stealth heads, headers, etc. I just kept it that way not thinking there would be much difference. And truthfully, there wasn't. I was expecting a really potent engine but I was disappointed because it felt only slightly better than the old one. But, wow. I guess all that stuff made a difference because it sure like the cfms now!

Posted By: 2boltmain

Re: My 440 is AWAKE! - 10/16/12 11:30 AM

Back in 1999 I spoke to a tech at an Edelbrock booth at a Lane Automotive car show. At the time I had a 440, 509 cam, 3000 stall with the CH28 and 2 500cfm carbs. I asked him about progressive and 1 to 1 and he told me my engine with its mods to definately go 1 to 1 and that running 2 500s was fine. (Their power package recommends 2 600s) It would be very interesting to see how the old Offy compares to the CH28 Edelbrock.

Posted By: bobs66440

Re: My 440 is AWAKE! - 10/18/12 10:14 AM

Quote:

It would be very interesting to see how the old Offy compares to the CH28 Edelbrock.