Holley Carb Question

Mike Gray · 08-25-2009, 09:58 AM

I found a good deal on a Holley carb with the right part number for my stocker project.
Would the carb have a problem passing tech with 2 small 3/16" holes that have been drilled through the divider plate?

Bob Pagano · 08-25-2009, 11:45 AM

Send that picture to your div. tech dir. and if he says yes print out his reply and carry it with you. I have no idea what the intent was for drilling them, anybody else ever see this ?

Bill Harris · 08-25-2009, 11:55 AM

You have to be pretty old to remember the purpose of those holes! Once upon a time before "double-pumpers" you could buy a kit to change vacuum secondaries to mechanical. In order to get rid of the bog, you got a special accelerator pump nozzle that directed some of the shot through two little pipes to the secondaries. Those holes were for the little pipes to pass through and squirt into the secondary barrels. Pretty lame huh?

Rory McNeil · 08-25-2009, 11:58 AM

Many years ago there were kits available to provide some of the accelerator pump shot to go into the secondary side of vac sec Holleys via 2 small tubes that ran thru 2 holes between the air horn "wall" , just like the holes in that photo. The 2 tubes were pressed into a modified pump squirter. My guess was that so many guys didn`t think the vac secondaries were working, so they stuck a screw in the secondary slot, which would cause a major bog. These kits were a crutch to make this mickey mouse "mod" more driver friendly.

Rory McNeil · 08-25-2009, 12:02 PM

Like Bill said, they were available as just the tube setup, or if you wanted to be "high tech", and didn`t want to jam a screw into the secondary slot, you could get a "gear drive" affair that fit onto the primary and secondary throttle shafts, and had a pair of 1/4 circle "gears" that made all 4 throttle blades open similtaniously.

Chris1529 · 08-25-2009, 12:47 PM

what is that carb going on?

Mike Gray · 08-25-2009, 01:03 PM

Wow, you guys confirmed what the seller told me about the holes. (For secondary pump shot)
The carb is an 850cfm list #3418.
Regarding what it's going on, it's not an L88 '67 Vette, can anyone guess what it's for?
Now back to the question, will the holes get through tech?
I'm going to try Bob's suggestion and see what they say.

Adger Smith · 08-25-2009, 01:05 PM

I sold a few of those secondary kits. Marketed by Eelco (sp?)
I guess that makes me in the really old, right Bill? :~)
If tech didn't like them fill with a little epoxy or JB weld.

Bub Whitaker · 08-25-2009, 04:12 PM

Quote:

Originally Posted by Adger Smith

I sold a few of those secondary kits. Marketed by Eelco (sp?)
I guess that makes me in the really old, right Bill? :~)
If tech didn't like them fill with a little epoxy or JB weld.

Yes ur old... installed that kit on my L79 66 Chevy II...

BlueOval Ralph · 08-26-2009, 07:35 AM

Still have one in my old Holley parts, the gear drive and the squirter Y

Quote:

Originally Posted by Bub Whitaker

Yes ur old... installed that kit on my L79 66 Chevy II...

08-25-2009, 09:58 AM	#1
Mike Gray Senior Member Join Date: Oct 2006 Posts: 614 Likes: 307 Liked 685 Times in 196 Posts	Holley Carb Question I found a good deal on a Holley carb with the right part number for my stocker project. Would the carb have a problem passing tech with 2 small 3/16" holes that have been drilled through the divider plate? Attached Thumbnails

08-25-2009, 11:45 AM	#2
Bob Pagano VIP Member Join Date: Jun 2002 Location: New Holland, PA Mooresville,NC Posts: 1,163 Likes: 237 Liked 16 Times in 11 Posts	Re: Holley Carb Question Send that picture to your div. tech dir. and if he says yes print out his reply and carry it with you. I have no idea what the intent was for drilling them, anybody else ever see this ? __________________ Bob Pagano A/SA

08-25-2009, 11:58 AM	#4
Rory McNeil VIP Member Join Date: Jun 2007 Location: from Vancouver BC Canada, now in Nova Scotia Posts: 1,307 Likes: 313 Liked 1,090 Times in 299 Posts	Re: Holley Carb Question Many years ago there were kits available to provide some of the accelerator pump shot to go into the secondary side of vac sec Holleys via 2 small tubes that ran thru 2 holes between the air horn "wall" , just like the holes in that photo. The 2 tubes were pressed into a modified pump squirter. My guess was that so many guys didn`t think the vac secondaries were working, so they stuck a screw in the secondary slot, which would cause a major bog. These kits were a crutch to make this mickey mouse "mod" more driver friendly. __________________ NHRA 6390 STK M/S 85 Mustang

08-25-2009, 12:02 PM	#5
Rory McNeil VIP Member Join Date: Jun 2007 Location: from Vancouver BC Canada, now in Nova Scotia Posts: 1,307 Likes: 313 Liked 1,090 Times in 299 Posts	Re: Holley Carb Question Like Bill said, they were available as just the tube setup, or if you wanted to be "high tech", and didn`t want to jam a screw into the secondary slot, you could get a "gear drive" affair that fit onto the primary and secondary throttle shafts, and had a pair of 1/4 circle "gears" that made all 4 throttle blades open similtaniously. __________________ NHRA 6390 STK M/S 85 Mustang

08-25-2009, 12:47 PM	#6
Chris1529 VIP Member Join Date: Dec 2006 Location: West Virginia Posts: 1,366 Likes: 6 Liked 70 Times in 29 Posts	Re: Holley Carb Question what is that carb going on? __________________ Chris Bowman The Mountain State Mustang 1984 Mustang GT350

08-25-2009, 11:55 AM	#3
Bill Harris Member Join Date: Mar 2002 Location: Ooltewah, TN Posts: 421 Likes: 13 Liked 26 Times in 13 Posts	Re: Holley Carb Question You have to be pretty old to remember the purpose of those holes! Once upon a time before "double-pumpers" you could buy a kit to change vacuum secondaries to mechanical. In order to get rid of the bog, you got a special accelerator pump nozzle that directed some of the shot through two little pipes to the secondaries. Those holes were for the little pipes to pass through and squirt into the secondary barrels. Pretty lame huh? __________________ Bill Harris ex 2172 STK ex 2272 S/S

08-25-2009, 01:03 PM	#7
Mike Gray Senior Member Join Date: Oct 2006 Posts: 614 Likes: 307 Liked 685 Times in 196 Posts	Re: Holley Carb Question Wow, you guys confirmed what the seller told me about the holes. (For secondary pump shot) The carb is an 850cfm list #3418. Regarding what it's going on, it's not an L88 '67 Vette, can anyone guess what it's for? Now back to the question, will the holes get through tech? I'm going to try Bob's suggestion and see what they say. Last edited by Mike Gray; 08-25-2009 at 01:07 PM.

08-25-2009, 01:05 PM	#8
Adger Smith VIP Member Join Date: Dec 2001 Location: Texarkana Ark/TX Posts: 2,446 Likes: 575 Liked 880 Times in 311 Posts	Re: Holley Carb Question I sold a few of those secondary kits. Marketed by Eelco (sp?) I guess that makes me in the really old, right Bill? :~) If tech didn't like them fill with a little epoxy or JB weld. __________________ Adger Smith (Former SS) Last edited by Adger Smith; 08-25-2009 at 01:07 PM. Reason: sp