|
01-26-2022, 07:06 PM | #1 |
Junior Member
Join Date: Jun 2021
Posts: 2
Likes: 0
Liked 0 Times in 0 Posts
|
Nos carbs.
Looking for information on the following CARBS.
Theses are nos holley carbs that i am trying to Find out if they are used in any class racing. This is not a for sale ad, information only. What we do not want to do is sell them as just nos carbs if racers van use them. List: 9834 Julian date 3037 8418-1 jd 961 4781-3 jd 1780 4781-2 jd 2712 3310 jd 923 3310 jd 584 4781-8 jd 2516 4781-2 jd 1758 4881-8 jd 2516 6210-3 jd 2554 Quick Fuel 585 Can someone tell me if this carb number is legal and used on a 1968 or 1969 big block camaro. Stock or superstock. Thanks for any help. It goes much deeper than you will know. |
01-26-2022, 08:18 PM | #2 |
Banned
Join Date: Nov 2014
Posts: 324
Likes: 625
Liked 180 Times in 90 Posts
|
Re: Nos carbs.
These are the only Holley #s I found in the NHRA Engine Blueprint Specifications.
1969 Chevrolet 400/427 3-2 Holley F&R R-3659A R-4055A 375/396 1-4 Holley R-4346A 425/427 1*4 Holley R-4346A 430/427 1-4 Holley R-4296A 435/427 3-2 Holley F&R R-3659A C R-4055A 1968 Chevrolet 375/396 1-4 Holley R-4053A 400/427 3-2 Holl F&R R-3659A C R-4055A 425/427 1-4 Holley R-4052A 430/427 1-4 Holley R-4054A 435/427 3-2 Holley F&R R-3659A C R-4055A |
01-27-2022, 09:15 AM | #3 |
Member
Join Date: Sep 2009
Posts: 137
Likes: 78
Liked 78 Times in 40 Posts
|
Re: Nos carbs.
When you're unsure of the original specs, parts, or potential OEM application of a specific List Number Holley carburetor, you need the Holley Illustrated Parts & Specs Manual. Available as Holley part number 36-51-7, around 50 bucks from many popular locations (including the Big"A".
I'm sorry, mine's somewhere in storage boxes 500 miles away so I can't look them up for you. PS If your doing online shopping and it seems like the seller "SuperShops" has lots of Holley 'Group' stuff available, that's because it's.....Holley. Last edited by Tom Broome; 01-27-2022 at 09:22 AM. |
01-27-2022, 11:41 AM | #4 |
Junior Member
Join Date: Jun 2021
Posts: 2
Likes: 0
Liked 0 Times in 0 Posts
|
Re: Nos carbs.
Thanks the info and the lead on how to find them going forward.
Much appreciated |
01-27-2022, 12:51 PM | #5 |
VIP Member
Join Date: Dec 2001
Location: Arkansas - In the middle of everything.
Posts: 1,986
Likes: 55
Liked 731 Times in 180 Posts
|
Re: Nos carbs.
Read pp.58-62 of this document -
https://www.nhraracer.com/Files/Tech...edProducts.pdf Also, from the Rule Book, Section 11A, page 3: "CARBURETOR Must be correct year, make, and model specified for car’s engine; fuel or air bleed passages may be resized. Drilling idle holes in primary throttle blades permitted. Other modifications prohibited. Sandblasting, grinding, flash removal, dry film coating, or any other modification to carburetors prohibited. Replacement carburetors permitted provided they are same model, type, throttle bore, and venturi size. Computer carburetors use latest model non-computer carb for engine application. " (Emphasis mine)
__________________
|
01-27-2022, 05:37 PM | #6 | |
Senior Member
Join Date: Feb 2008
Location: Georgetown, Indiana (close to Louisville, KY)
Posts: 769
Likes: 509
Liked 225 Times in 104 Posts
|
Re: Nos carbs.
Quote:
engine; Year was eliminated years back. Model has been modified some. Example; Chevy's can now run a front fuel inlet Qjet instead of 90degree inlet as they came out with. Main thing they do now is measure butterflys, and Venturi's. |
|
01-28-2022, 08:21 AM | #7 | |
Member
Join Date: Nov 2005
Location: Waldorf Md
Posts: 225
Likes: 10
Liked 29 Times in 16 Posts
|
Re: Nos carbs.
Quote:
From my 1989 Holley Illustrated parts and spec manual
__________________
Bill Koustenis |
|
01-28-2022, 08:38 AM | #8 |
VIP Member
Join Date: Dec 2001
Location: Arkansas - In the middle of everything.
Posts: 1,986
Likes: 55
Liked 731 Times in 180 Posts
|
Re: Nos carbs.
The two 3310 carbs you listed can be used on a 1968 or 1969 big block Camaro using the 396-375 engine or the 1969 Camaro using the 427-425hp engine.
__________________
|
Liked |
|
|