Author Topic: Jay’s B9 reproduction carb  (Read 1454 times)

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thatdarncat

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Re: Jay’s B9 reproduction carb
« Reply #1 on: May 30, 2024, 11:59:49 AM »
A lot of people don’t realize all the little specification “details” that go into a carburetor’s calibration, and designed into matching it’s original application. There is more to a carburetor than just it’s CFM rating LOL. Thanks for taking the time that show a reproduction isn’t always an “accurate” reproduction, even when made by the original company. Your videos are always informative.
Kevin Rolph

1967 Cougar Drag Car ( under constuction )
1966 7 litre Galaxie
1966 Country Squire 390
1966 Cyclone GT 390
1968 Torino GT 390
1972 Gran Torino wagon
1978 Lincoln Mk V

Drew Pojedinec

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Re: Jay’s B9 reproduction carb
« Reply #2 on: May 30, 2024, 12:26:14 PM »
Biggest issue would be the mile wide gap between the main body and throttle body.

The idle feeds are kinda crushed too, I’ll open them up a good bit.

blykins

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Re: Jay’s B9 reproduction carb
« Reply #3 on: May 30, 2024, 12:46:26 PM »
Holy cow.
« Last Edit: May 30, 2024, 01:05:15 PM by blykins »
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jayb

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Re: Jay’s B9 reproduction carb
« Reply #4 on: May 30, 2024, 01:20:37 PM »
All I can say is I'm not the guy who bought that carburetor LOL!  Thanks for the help on that Drew, my Boss 429 engine will certainly appreciate it - Jay
Jay Brown
- 1969 Mach 1, Drag Week 2005 Winner NA/BB, 511" FE (10.60s @ 129); Drag Week 2007 Runner-Up PA/BB, 490" Supercharged FE (9.35 @ 151)
- 1964 Ford Galaxie, Drag Week 2009 Winner Modified NA (9.50s @ 143), 585" SOHC
- 1969 Shelby Clone, Drag Week 2015 Winner Modified NA (Average 8.98 @ 149), 585" SOHC

   

Drew Pojedinec

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Re: Jay’s B9 reproduction carb
« Reply #5 on: May 30, 2024, 01:48:17 PM »
Is why I take videos… lol

cjshaker

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Re: Jay’s B9 reproduction carb
« Reply #6 on: May 30, 2024, 04:51:36 PM »
...my Boss 429 engine will certainly appreciate it - Jay

Nobody is going to ask? Boss 429? In what car?
Doug Smith


'69 R-code Mach 1, 427 MR, 2x4, Jerico, 4.30 Locker
'70 F-350 390
'55 Ford Customline 2dr
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cammerfe

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Re: Jay’s B9 reproduction carb
« Reply #7 on: May 30, 2024, 05:08:19 PM »
Probably going into his Ford GT ;)

KS

jayb

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Re: Jay’s B9 reproduction carb
« Reply #8 on: May 30, 2024, 05:09:59 PM »
Long story short, after owning my Ford GT for almost 20 years, watching the value go so high that I didn't even feel comfortable driving it anymore, I worked a deal to basically swap the Ford GT and a little cash for two Boss 429 Mustangs.  One of them is complete and a survivor, needs paint and a good cleanup, and didn't run well when I bought it, but after some steering and brake work, a new carb (not the one that Drew is doing), and tune up/oil change, it runs and drives great.  Maybe the nicest driving old Mustang I've ever had.  The second car I bought in pieces.  It was totally restored about 10 years and 750 miles ago and the previous owner put a Kaase Boss 429 in it.  When he decided to sell it he wanted to put an original Boss 429 engine in it, which he had purchased new (!!) in 1969, along with a different Boss 429 car.  Anyway the engine needed a rebuild, so he did that, but made the mistake of putting standard bearings on a 10/10 crank  :o  Fired it up on the engine stand and had low oil pressure so he tore it all down.  It was all sitting there when I bought it.  It is a beautiful car, probably the nicest looking old Mustang I've ever had.  I rebuilt the engine, dynoed it (425 HP and 446 ft-lbs, all stock except a hydraulic roller cam), but the carb I got with the engine didn't run right, so I dynoed it with a 750 double pumper I had on the shelf.  I sent the carb to Drew, and glad I did; I would have never thought to look for a gap between the main body and the base plate...
Jay Brown
- 1969 Mach 1, Drag Week 2005 Winner NA/BB, 511" FE (10.60s @ 129); Drag Week 2007 Runner-Up PA/BB, 490" Supercharged FE (9.35 @ 151)
- 1964 Ford Galaxie, Drag Week 2009 Winner Modified NA (9.50s @ 143), 585" SOHC
- 1969 Shelby Clone, Drag Week 2015 Winner Modified NA (Average 8.98 @ 149), 585" SOHC

   

cammerfe

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Re: Jay’s B9 reproduction carb
« Reply #9 on: May 30, 2024, 08:42:34 PM »
Hey Jay---

With enough work on the Ford GT's engine, and a change from gas to methanol to go along with a change to turbos, that GT would have been capable of going 300+ in one mile from a standing start. Didn't that make you sorta itchy? :)

KS

cjshaker

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Re: Jay’s B9 reproduction carb
« Reply #10 on: May 31, 2024, 02:47:57 PM »
I certainly don't blame you for passing on the GT. A car you're afraid to drive is no fun.
The story sounds interesting on the Boss '9s, especially the survivor.
Doug Smith


'69 R-code Mach 1, 427 MR, 2x4, Jerico, 4.30 Locker
'70 F-350 390
'55 Ford Customline 2dr
'37 Ford Coupe

Heo

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Re: Jay’s B9 reproduction carb
« Reply #11 on: June 01, 2024, 08:57:47 AM »
Finally a HP figure from a reliabel source on a boss nine.  So 425/ 446 stock except the cam.
I guess thaths not a radical grind



The defenition of a Gentleman, is a man that can play the accordion.But dont do it

jayb

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Re: Jay’s B9 reproduction carb
« Reply #12 on: June 01, 2024, 11:16:25 AM »
Right Heo, with those heads I was hoping for more.  I think if I could have spun it higher it may have done better, but the dual point distributor pretty much gave up between 5500-5800.  Seems like with headers, an electronic distributor, and maybe a bigger cam, you could get to 475-500 HP.  But not in stock trim, that's for sure.

I thought it was interesting that a basically stock 428CJ would make quite a bit more torque.  Those huge ports on the Boss 9 really hurt torque production.  No wonder everybody said that a good running 428CJ would beat a Boss 429 back in the day...
Jay Brown
- 1969 Mach 1, Drag Week 2005 Winner NA/BB, 511" FE (10.60s @ 129); Drag Week 2007 Runner-Up PA/BB, 490" Supercharged FE (9.35 @ 151)
- 1964 Ford Galaxie, Drag Week 2009 Winner Modified NA (9.50s @ 143), 585" SOHC
- 1969 Shelby Clone, Drag Week 2015 Winner Modified NA (Average 8.98 @ 149), 585" SOHC

   

hbstang

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Re: Jay’s B9 reproduction carb
« Reply #13 on: June 01, 2024, 01:19:34 PM »
the stock boss intake is a dual plane and kills hp.if you had room,the kaase intake is a big improvement.that said,and better cam and headers added 100 hp to other wise stock boss engines.dick serdinak from ohio had a nhra stocker he ran,and went 10.70s with full weight car,and engine was not fully built for the class.back in the day lol.

482supersnake

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Re: Jay’s B9 reproduction carb
« Reply #14 on: June 01, 2024, 06:52:04 PM »
The real question is, why are we just hearing about these bosses and why no pictures and dyno videos?😂😂