AA/SA @ Norwalk OH

X-TECH MAN · 06-22-2009, 06:31 PM

Quote:

Originally Posted by Steve Hagberg

Jeff and David: Regarding the 3-bbl carb and intake, Chrysler completed the design modifications to the carb and 'short track' manifold and submitted them to NASCAR one week before the Firecracker 400 at Daytona in 1964. The combination was accepted by them and ran at that race. The manifold was the '043' magnesium version with the rear half of the plenum modified to accept the wide 3-bbl throttle blade. Les Norton runs this manifold on his car as it has been accepted by NHRA even though the carb has not been accepted! The interesting part of the story is that the Chrysler engineers spent a lot of time and money trying to get the 3-bbl to work, and even had to move the secondary boosters to correct the fuel distribution. Eventually they said it was worth 2% HP improvement, the same as they found in early testing with Hilborn fuel injection. The carb is a Holley model 3085A P/N 2536406 and used base plate gasket 2536411. One of these would be a rare find as it is not the same as the generic 3-bbl Holleys that were later sold over the counter. Anyway, it's not legal in stock, just an interesting story. By the way, I came about this information when a good friend let me look over an extensive collection of weekly engineering meeting minutes from late '63 to mid '64 by the group developing the A 864 engine program which included both the NASCAR engine and the Drag Race cross ram engine. Facinating reading. These guys were so far ahead of everyone else it was scary. Hollow stem valves, titanium retainers, a slew of light weight proposals including gun drilled cams, titanium wrist pins, Hilborns without conventional throttle blades. What we got was aluminum heads, oil and water pumps, mag intakes and more.

Thank you Steve for the info on the "Bath Tub" intake and 3 barrel carb combo. It would have taken me days and maybe weeks to dig out the paper work and info on this combo as I have it packed away. I knew I wasnt to crazy...LOL .It was just a long time ago when we researched it for IHRA's AA/S class. In the end IHRA went with a 7 lb class break and reduced the HP rating on the Hemi X ram 2x4 system which would also allow the Ford T-Bolts and L-88 Corvettes with thier old HP ratings to compete together heads up. Dan Davorak had build one (a 64 X-ram Hemi model) but I dont know if he had the chance to run it before his surgery.

Bob Pagano · 06-22-2009, 06:46 PM

Item number: 250447430693 ebay Nascar carb, no intakes at this time but have seen a few in the last couple years even the wedge nascar intake, there were two just last month.

David Barton · 06-22-2009, 06:59 PM

Thanks for the interesting facts Steve.

The intake I have here at the shop is the exact same one you're talking about. Which intake did they have before they had the 3 bbl approved? Was it the same one without the 3 bbl modification?

Myron Piatek · 06-22-2009, 07:26 PM

Is this one of the Hemi Nascar single carb intakes being talked about, or a similar version with that has the carb "sunk" in the top half?

http://wwnboa.com/jpgs/wwnboamckinney2.jpg

....and I also found this!

http://www.thehemi.com/gallery.php?id=0003

Larry Hill · 06-22-2009, 07:52 PM

Dave I run a steel shaker with factory, "lead" trim ring and scoop inserts. I think this hood looks much cooler than the AAR hood. The air cleaner top is OEM steel and the intake is a real piece with the correct casting number the carbs are corect for a '71 six pac. Drop by at Norwalk and check it out for yourself.

A/SA now has 15 cars that will be four rounds of fun for two people.

David Barton · 06-22-2009, 08:14 PM

I think it would be great to run A/SA with so many cars but I don't want to get hit with HP. And how many cars lose class on purpose just to protect their combo? What kind of racing is that? At least in AA you can run balls out. At least for now anyway.

GARY JACOB · 06-23-2009, 02:42 PM

Quote:

Originally Posted by Myron Piatek

Is this one of the Hemi Nascar single carb intakes being talked about, or a similar version with that has the carb "sunk" in the top half?

http://wwnboa.com/jpgs/wwnboamckinney2.jpg

....and I also found this!

http://www.thehemi.com/gallery.php?id=0003

[b] is the intake I have and the carb looks like the one in the bathtub picture

Steve Hagberg · 06-23-2009, 10:15 AM

David; The '043' intakes for the 4-BBL carb had a notch cut in the divider wall that ran between the centerlines of the primary and secondary throttle shafts and was about .68" deep. I asked Gendora if the M-1 intake could be cut to match the '043' and unfortunately the answer was no. Steve

06-22-2009, 06:46 PM	#2
Bob Pagano VIP Member Join Date: Jun 2002 Location: New Holland, PA Mooresville,NC Posts: 1,163 Likes: 249 Liked 16 Times in 11 Posts	Re: AA/SA @ Norwalk OH Item number: 250447430693 ebay Nascar carb, no intakes at this time but have seen a few in the last couple years even the wedge nascar intake, there were two just last month. __________________ Bob Pagano A/SA

06-22-2009, 06:59 PM	#3
David Barton Sponsor Join Date: Jun 2009 Location: Reading, PA Posts: 199 Likes: 0 Liked 0 Times in 0 Posts	Re: AA/SA @ Norwalk OH Thanks for the interesting facts Steve. The intake I have here at the shop is the exact same one you're talking about. Which intake did they have before they had the 3 bbl approved? Was it the same one without the 3 bbl modification?

06-22-2009, 07:26 PM	#4
Myron Piatek VIP Member Join Date: Nov 2001 Location: Florida Posts: 1,542 Likes: 34 Liked 138 Times in 51 Posts	Re: AA/SA @ Norwalk OH Is this one of the Hemi Nascar single carb intakes being talked about, or a similar version with that has the carb "sunk" in the top half? http://wwnboa.com/jpgs/wwnboamckinney2.jpg ....and I also found this! http://www.thehemi.com/gallery.php?id=0003 __________________ LOCOMOTION Racing Last edited by Myron Piatek; 06-22-2009 at 07:46 PM.

06-22-2009, 07:52 PM	#5
Larry Hill Live Reporter Join Date: Oct 2004 Location: Hickory, Ky Posts: 10,684 Likes: 1,993 Liked 11,019 Times in 2,265 Posts	Re: AA/SA @ Norwalk OH Dave I run a steel shaker with factory, "lead" trim ring and scoop inserts. I think this hood looks much cooler than the AAR hood. The air cleaner top is OEM steel and the intake is a real piece with the correct casting number the carbs are corect for a '71 six pac. Drop by at Norwalk and check it out for yourself. A/SA now has 15 cars that will be four rounds of fun for two people. __________________ IHM Used Parts https://ihmusedparts.com 888-821-1817 Last edited by Larry Hill; 06-22-2009 at 08:28 PM.

06-22-2009, 08:14 PM	#6
David Barton Sponsor Join Date: Jun 2009 Location: Reading, PA Posts: 199 Likes: 0 Liked 0 Times in 0 Posts	Re: AA/SA @ Norwalk OH I think it would be great to run A/SA with so many cars but I don't want to get hit with HP. And how many cars lose class on purpose just to protect their combo? What kind of racing is that? At least in AA you can run balls out. At least for now anyway.

06-23-2009, 10:15 AM	#8
Steve Hagberg Junior Member Join Date: Dec 2007 Posts: 38 Likes: 0 Liked 0 Times in 0 Posts	Re: AA/SA @ Norwalk OH David; The '043' intakes for the 4-BBL carb had a notch cut in the divider wall that ran between the centerlines of the primary and secondary throttle shafts and was about .68" deep. I asked Gendora if the M-1 intake could be cut to match the '043' and unfortunately the answer was no. Steve