Legal carbs

mike coates · 12-31-2022, 08:58 AM

Can someone please confirm if you can use carb numbers other than those listed for your years combo, as long as the bore sizes spec’d match?
Thanks
Mike

Billy Nees · 12-31-2022, 09:51 AM

It must be the correct type of carb.. Other than that, throttle bore and venturi size.

Adger Smith · 12-31-2022, 02:58 PM

Quote Billy "It must be the correct type of carb.. Other than that, throttle bore and venturi size."

The way I read it the "Brands/MFG" as well as the throttle bores/venturi must be correct.
This may be a bag of worms with the new China Knock Off carbs..
Getting bounced might not be the best way to find out...

mike coates · 12-31-2022, 05:18 PM

Thanks guys
Yes it would be same mfg. Looking at, for example, a ‘66 afb vs a ‘66 or ‘67 with the same bore dimensions.
I am looking at a ‘66 dodge combo but use a ‘65 - ‘70 carb with the same spec.
Thanks
Mike

Adger Smith · 01-01-2023, 10:34 AM

Mike,
Is the Dodge a thermo quad carb?

Stan Weiss · 01-01-2023, 11:18 AM

Quote:

Originally Posted by mike coates

Thanks guys
Yes it would be same mfg. Looking at, for example, a ‘66 afb vs a ‘66 or ‘67 with the same bore dimensions.
I am looking at a ‘66 dodge combo but use a ‘65 - ‘70 carb with the same spec.
Thanks
Mike

Mike,
My '70 340 Dart (4 speed) was an AVS

Stan

SSDiv6 · 01-01-2023, 06:59 PM

Quote:

Originally Posted by Adger Smith

Mike,
Is the Dodge a thermoquad carb?

Depending on the year and model, Mopars used all brands of carbs: Carter Thermoquad, AVS, AFB, Holley, and even Quadrajet.

Dave Gantz · 01-02-2023, 01:06 AM

There were no Thermoquads used until 1971.
Mike, please give more information as to what you're up to.

Paul Precht · 01-02-2023, 03:17 AM

The 60 to 67 AFBs used on the 383, 413
and 426 SW had no weights or air valve and were all the same size and style other than part no, linkage that changed in 62 and jetting. A slightly smaller AFB that looked identical was used on the 60-62 318 and 361. The 68-70 small AVS was used on the 340 and 383, they are the same carb other than part no. and jetting. The 273 and the 67 440 HP AFBs are different from each other and were each different than any other 60s Mopar AFBs.

mike coates · 01-09-2023, 05:44 PM

The combination I am looking at is the '66 dodge 383 4bl
It has the AFB and the specs for throttle bore and venturi size are listed.
I was wondering if the AFB for 64-67 could be used as long as they match those. I remember you could, but that may have been in IHRA.

Thanks
Mike

12-31-2022, 08:58 AM	#1
mike coates Junior Member Join Date: Jul 2007 Location: Marshall, MI Posts: 33 Likes: 0 Liked 0 Times in 0 Posts	Legal carbs Can someone please confirm if you can use carb numbers other than those listed for your years combo, as long as the bore sizes spec’d match? Thanks Mike __________________ Mike Coates TBD

12-31-2022, 09:51 AM	#2
Billy Nees VIP Member Join Date: Oct 2002 Location: On a hilltop in Pa. Posts: 4,486 Likes: 3,587 Liked 7,683 Times in 1,731 Posts	Re: Legal carbs It must be the correct type of carb.. Other than that, throttle bore and venturi size. __________________ Billy Nees 1188 STK, SS I'm not spending 100K to win 2K

12-31-2022, 02:58 PM	#3
Adger Smith VIP Member Join Date: Dec 2001 Location: Texarkana Ark/TX Posts: 2,446 Likes: 575 Liked 880 Times in 311 Posts	Re: Legal carbs Quote Billy "It must be the correct type of carb.. Other than that, throttle bore and venturi size." The way I read it the "Brands/MFG" as well as the throttle bores/venturi must be correct. This may be a bag of worms with the new China Knock Off carbs.. Getting bounced might not be the best way to find out... __________________ Adger Smith (Former SS)

12-31-2022, 05:18 PM	#4
mike coates Junior Member Join Date: Jul 2007 Location: Marshall, MI Posts: 33 Likes: 0 Liked 0 Times in 0 Posts	Re: Legal carbs Thanks guys Yes it would be same mfg. Looking at, for example, a ‘66 afb vs a ‘66 or ‘67 with the same bore dimensions. I am looking at a ‘66 dodge combo but use a ‘65 - ‘70 carb with the same spec. Thanks Mike __________________ Mike Coates TBD

01-01-2023, 10:34 AM	#5
Adger Smith VIP Member Join Date: Dec 2001 Location: Texarkana Ark/TX Posts: 2,446 Likes: 575 Liked 880 Times in 311 Posts	Re: Legal carbs Mike, Is the Dodge a thermo quad carb? __________________ Adger Smith (Former SS)

01-02-2023, 01:06 AM	#8
Dave Gantz Senior Member Join Date: Nov 2005 Location: Verrry South Jersey Posts: 537 Likes: 134 Liked 251 Times in 125 Posts	Re: Legal carbs There were no Thermoquads used until 1971. Mike, please give more information as to what you're up to.

01-02-2023, 03:17 AM	#9
Paul Precht Senior Member Join Date: Dec 2001 Location: Elysburg, Pa Posts: 730 Likes: 353 Liked 309 Times in 118 Posts	Re: Legal carbs The 60 to 67 AFBs used on the 383, 413 and 426 SW had no weights or air valve and were all the same size and style other than part no, linkage that changed in 62 and jetting. A slightly smaller AFB that looked identical was used on the 60-62 318 and 361. The 68-70 small AVS was used on the 340 and 383, they are the same carb other than part no. and jetting. The 273 and the 67 440 HP AFBs are different from each other and were each different than any other 60s Mopar AFBs.

01-09-2023, 05:44 PM	#10
mike coates Junior Member Join Date: Jul 2007 Location: Marshall, MI Posts: 33 Likes: 0 Liked 0 Times in 0 Posts	Re: Legal carbs The combination I am looking at is the '66 dodge 383 4bl It has the AFB and the specs for throttle bore and venturi size are listed. I was wondering if the AFB for 64-67 could be used as long as they match those. I remember you could, but that may have been in IHRA. Thanks Mike __________________ Mike Coates TBD