Holley Carb Question

Reply Subscribe

Thread Tools

Search this Thread

Jan 9, 2011 | 10:10 PM

KS69Coupe

Thread Starter

Drifting

Joined: Aug 2010

Posts: 1,768

Likes: 302

From: Charlotte Area North Carolina

Holley Carb Question

I'm trying to determine more details on the Holley Carb sitting on top of my 327 ci, 1966 Coupe. I tried the Holley web site to locate model numbers and carb info, but think I'm more confused and was not able to type in my numbers and figure out my Holley.

Numbers 12R-10658B

I see a stamped number 3321 stamped on the primaries

Front, driver's side shows R84021-1 with what I think is a date code of 1614 (not sure how to interpret this date)

Have attached a couple of photos. Would appreciate any information that you can help with - thank you in advance.

Jan 9, 2011 | 10:46 PM

Mike67nv

Melting Slicks

Joined: Apr 2010

Posts: 2,142

Likes: 282

2018 C2 of Year Finalist

2015 C2 of the Year Finalist

I'm not an expert at decoding Holley carb stamping but I had done some investigating on mine a while back. From some of the data I collected, it looks like the carburetor number R84021-1 is a model 4011 - which is a 650 CFM. The first three digits of a four digit date code represent the day of the year, the fourth digit is the year. So, the 1614, translates to June of 74, 84, 94 etc. I believe the four digit date code was first used in 1973. Maybe some one else can be more definitive.

Jan 9, 2011 | 11:11 PM

Plasticman

Race Director

Joined: Nov 2000

Posts: 10,339

Likes: 664

From: Beverly Hills (Pine Ridge) Florida

Lifted off the Hotrodders Bulletin Board:

http://www.hotrodders.com/forum/holley-carb-177035.html

#1 04-28-2010, 11:27 AM
--------------------------------------------------------------------------------
I have a Holley carb that i think is a 650 double pumper but i am not for sure. i am trying to ID it. i looked on the holley site but no help. the numbers on the crab is R84021-1, (2284 i think this number is production date) can anyone help? Thanks

ziggy57

#2 04-28-2010, 12:04 PM
454C10
Member
Join Date: Dec 2004

holley 4011 650 marine q-jet replacment spreadbore, vacuum secondary

http://www.teufert.net/carbs/holley-cfm.htm

#3 04-28-2010, 01:12 PM

Put it back on the boat

Vince

#4 04-28-2010, 02:36 PM

While these carbs have been discontinued by Holley due to lack of sales of this style carb(all aluminum body, top lifts off, annular boosters)there is nothing wrong with it. If it is in good mechanical condition use it, rebuild it if neccessary, parts and kits are still available. Just because it is listed as a marine carb doesn't mean it won't work just fine on the road, just means it has specific bowl vent mods to prevent fume build up in a boat bilge area. I've used a couple of marine Holley Spreadbores on the road and they work just fine.

#5 04-28-2010, 06:28 PM

Thanks all, it works very well! i have it on a 396 with 402 heads,hooker headers, i bought a 72 chevy 4wd, 6" lift, 35" tires, just wanted to know what the carb was. May pull this motor and put it in my 59 volkswagen hot rod build?

Plasticman

Last edited by Plasticman; Jan 9, 2011 at 11:15 PM.

Jan 10, 2011 | 08:44 PM