Factory Holley ? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

PrinsGMC · 01-25-2007, 08:26 PM

Our 1969 GMC has a factory 396 and on top is a holley carb. My grandfather bought it in '71. I was just wondering if it was possible for it to be factory, and if so any idea on how many cfm?

*rage'nrat638* · 01-25-2007, 08:37 PM

some how i dought it..but whats the list number on the air horn?
i will look it up

67chevemall · 01-25-2007, 09:20 PM

I once had a holley I swear it was factory. I drank alot too though.
I am interested in this one

jake60 · 01-25-2007, 09:50 PM

My 1969 GMC Service Manual lists only Bendix-Stromberg, and Rochesters. The Bendix-Strombergs were used on the 305 V6's and Rochester for all other applications. The 396 should have a #7029214 Quadrajet.

From my past experience, Hollys were used only on 366's and 427's on large trucks.

PrinsGMC · 01-25-2007, 10:21 PM

The thing is that it has been in my family sice it was 2 years old and the original owner said he didnt change anything. But then again we looked underneath the truck and it has a pair of purple hornys for the mufflers.

**WorkinLonghorn** · 01-25-2007, 10:28 PM

Jake60 says:

Quote:

From my past experience, Hollys were used only on 366's and 427's on large trucks.

Yes. My literature from 1969 says the 366 and 427 trucks came with Holley Mdl # 4150G.The other V8s got Rochester.

Blazer1970 · 01-26-2007, 07:34 AM

Is your Holley a spreadbore carb?

**Ron 586** · 01-26-2007, 08:41 AM

I have a carb that came off a 350 sb Chevy. It was a 1973 year model and it is shaped like a quadrajet but has Holley stamped on it. I haven't owned the truck in 20 years but I still have the intake and carb. Will take a picture or two when it warms up a little. I'll try to even find a number on it too. I've had more than one "expert" leave shaking their heads.

**Stocker** · 01-26-2007, 09:42 AM

When I bought my new '69 El Camino with the 396/375hp engine, it came with a Holley (800 cfm, iirc).

Ron, I know Holley had an aftermarket spreadbore replacement for Q-jets, but am not aware of any o.e.m. applications.

PrinsGMC · 01-26-2007, 01:16 PM

here are some pics of it

67chevemall · 01-26-2007, 01:45 PM

sweet. What a beast of a carb
good set up for rebuild
way to go on the pics

70rs/ss · 01-26-2007, 01:56 PM

I have a couple of the speadbore holleys just like that. I would doubt that it is stock, but Chevy and Holley had a relationship, as in Muscle cars and Holleys went hand in hand, but not on a truck. That might have come from a stock application vehicle and was then bolted on there, clean it up, put a kit in it and drive it, it doesn't matter if it is stock or not!

HuggerCST · 01-26-2007, 02:38 PM

Interesting. My friend is in the process of buying a "all original" '70 GMC with a big block that is said to have the original Holley on it too. I haven't seen it yet, but if it does, I'll snap some pics to compare.

jacobs · 01-26-2007, 09:59 PM

Holly sold truckloads of speadbores in the 1970's as a bolt on replacement of the Q-Jet to those who didn't know anything about carburetion. They ran good but I couldn't ever see any difference except for the decrease in fuel milege. I'm sure they were never installed at the factory.

*rage'nrat638* · 01-26-2007, 10:26 PM

rebuilt many spreadbore 6210 holleys

heres a few pictures

a vacuum secondary and a double pumper

*rage'nrat638* · 01-26-2007, 10:28 PM

double pumper like yours..

**Ron 586** · 01-26-2007, 10:42 PM

Quote:

Originally Posted by Stocker

When I bought my new '69 El Camino with the 396/375hp engine, it came with a Holley (800 cfm, iirc).

Ron, I know Holley had an aftermarket spreadbore replacement for Q-jets, but am not aware of any o.e.m. applications.

The carb I have looks nothing like the one pictured. I didn't get a chance to get a picture today but will tomorrow for sure. Here are the only numbers I found on the carb and intake. Intake # is 9997771. under that number is GM 2 On the top of the fuel inlet (which comes in from the right side but looks like by changing a block off plug could come in from front) is the numbers L7454 and under that 9142. This truck was a 1973 year model and I bought it in the early 1990's so it could have been changed at some point but it looked to be original and the air cleaner and everything about it fit like a glove. Will get pictures tomorrow for sure.

*rage'nrat638* · 01-26-2007, 10:53 PM

here you go ron..
heres what the holley by numbers book say's
1973-74 chevy 350/454 eng. aftermarket 4360 model

**Ron 586** · 01-27-2007, 12:11 AM

Rage n Rat, Your book don't happen to have a picture of that monster does it? The only reason that I have kept this setup is no one has ever seen one like it when I show it to them. Oh well gives me something to do tomorrow in the cold.

*rage'nrat638* · 01-27-2007, 01:04 AM

heres that carb ron

http://cgi.ebay.com/ebaymotors/Holle...QQcmdZViewItem

6772addict · 01-27-2007, 01:32 AM

I'm looking at a big block interchange manual and there is quite a list of 396's that have holley carbs. Most of them are in the muscle cars but your truck may have been ordered with a passenger car block. I have a 69 CST with the 396 and it came from the factory with a passenger car hi-perf block. The original owner ordered it that way. Get me your block # and I can cross reference it to see what model it is and if its original. Hope I can help.

**Ron 586** · 01-27-2007, 02:24 AM

Quote:

Originally Posted by rage'nrat638

heres that carb ron

http://cgi.ebay.com/ebaymotors/Holle...QQcmdZViewItem

That's it. Now to figure out how I ended up with one on a small block.

01-25-2007, 08:26 PM	#1
PrinsGMC Registered User Join Date: Jun 2005 Location: Redcliff Alberta Posts: 46	Factory Holley ? Our 1969 GMC has a factory 396 and on top is a holley carb. My grandfather bought it in '71. I was just wondering if it was possible for it to be factory, and if so any idea on how many cfm?

01-25-2007, 08:37 PM	#2
rage'nrat638 Account Suspended Join Date: Mar 2003 Location: THE FALL GUY CHICAGO IL Posts: 5,883	Re: Factory Holley ? some how i dought it..but whats the list number on the air horn? i will look it up

01-25-2007, 09:20 PM	#3
67chevemall Registered User Join Date: Apr 2003 Location: NB Posts: 3,367	Re: Factory Holley ? I once had a holley I swear it was factory. I drank alot too though. I am interested in this one __________________ 1968 Chevy C10 307 3ott fleetside 1967 Chevy C/10 V8, 3spd, fleetside lwb.Sold 1967 Chev C/10 step, 383, M21. SOLD

01-25-2007, 09:50 PM	#4
jake60 Registered User Join Date: Jul 2006 Location: Buffalo Park Posts: 75	Re: Factory Holley ? My 1969 GMC Service Manual lists only Bendix-Stromberg, and Rochesters. The Bendix-Strombergs were used on the 305 V6's and Rochester for all other applications. The 396 should have a #7029214 Quadrajet. From my past experience, Hollys were used only on 366's and 427's on large trucks. __________________ "Common sense is very uncommon" Rudyard Kipling

01-25-2007, 10:21 PM	#5
PrinsGMC Registered User Join Date: Jun 2005 Location: Redcliff Alberta Posts: 46	Re: Factory Holley ? The thing is that it has been in my family sice it was 2 years old and the original owner said he didnt change anything. But then again we looked underneath the truck and it has a pair of purple hornys for the mufflers.

01-26-2007, 07:34 AM	#7
Blazer1970 Registered User Join Date: Dec 1999 Location: Old Mission, MI, USA Posts: 2,510	Re: Factory Holley ? Is your Holley a spreadbore carb? __________________ Tim

01-26-2007, 08:41 AM	#8
Ron 586 RIP Mr Ron Join Date: Dec 2005 Location: Big Sandy, Tn. 38221 Posts: 8,166	Re: Factory Holley ? I have a carb that came off a 350 sb Chevy. It was a 1973 year model and it is shaped like a quadrajet but has Holley stamped on it. I haven't owned the truck in 20 years but I still have the intake and carb. Will take a picture or two when it warms up a little. I'll try to even find a number on it too. I've had more than one "expert" leave shaking their heads. __________________ Ron (Mr Round Tuit) Be kinder than necessary, for everyone you meet is fighting some kind of battle TN Message Forum TN Facebook Group SETN Truck Show My Photobucket

01-26-2007, 09:42 AM	#9
Stocker 20' Daredevil (Ret) Join Date: May 2003 Location: Jefferson State Posts: 13,586	Re: Factory Holley ? When I bought my new '69 El Camino with the 396/375hp engine, it came with a Holley (800 cfm, iirc). Ron, I know Holley had an aftermarket spreadbore replacement for Q-jets, but am not aware of any o.e.m. applications. __________________ - Mike - 1972 K20 LWB 350/350/205 RIP El Jay

01-26-2007, 01:16 PM	#10
PrinsGMC Registered User Join Date: Jun 2005 Location: Redcliff Alberta Posts: 46	Re: Factory Holley ? here are some pics of it Attached Images

01-26-2007, 01:45 PM	#11
67chevemall Registered User Join Date: Apr 2003 Location: NB Posts: 3,367	Re: Factory Holley ? sweet. What a beast of a carb good set up for rebuild way to go on the pics

01-26-2007, 01:56 PM	#12
70rs/ss Registered User Join Date: Dec 2004 Location: Northern AZ Posts: 7,271	Re: Factory Holley ? I have a couple of the speadbore holleys just like that. I would doubt that it is stock, but Chevy and Holley had a relationship, as in Muscle cars and Holleys went hand in hand, but not on a truck. That might have come from a stock application vehicle and was then bolted on there, clean it up, put a kit in it and drive it, it doesn't matter if it is stock or not!

01-26-2007, 02:38 PM	#13
HuggerCST Registered User Join Date: Jul 2001 Location: North Louisiana Posts: 4,501	Re: Factory Holley ? Interesting. My friend is in the process of buying a "all original" '70 GMC with a big block that is said to have the original Holley on it too. I haven't seen it yet, but if it does, I'll snap some pics to compare. __________________ Wynne 70 CST short fleet Hugger orange & white, 350/350, ps, pb, air, tilt, tach/vac/speedwarning, original buckets, AM/FM, oak bed floor, shoulder belts, 3.5"/5.5" drop, 20" American Racing VN425s. Build thread 53 Chevy shortbed 69 Camaro Click here to subscribe Chevy GMC International Truck Club Louisiana Charter Member http://www.louisianaclassictruckclub.com

01-26-2007, 09:59 PM	#14
jacobs Registered User Join Date: Sep 2005 Location: 9000' Mountain Man Posts: 326	Re: Factory Holley ? Holly sold truckloads of speadbores in the 1970's as a bolt on replacement of the Q-Jet to those who didn't know anything about carburetion. They ran good but I couldn't ever see any difference except for the decrease in fuel milege. I'm sure they were never installed at the factory. Last edited by jacobs; 01-26-2007 at 10:03 PM.

01-26-2007, 10:26 PM	#15
rage'nrat638 Account Suspended Join Date: Mar 2003 Location: THE FALL GUY CHICAGO IL Posts: 5,883	Re: Factory Holley ? rebuilt many spreadbore 6210 holleys heres a few pictures a vacuum secondary and a double pumper Last edited by rage'nrat638; 07-12-2007 at 06:58 AM.

01-26-2007, 10:28 PM	#16
rage'nrat638 Account Suspended Join Date: Mar 2003 Location: THE FALL GUY CHICAGO IL Posts: 5,883	Re: Factory Holley ? double pumper like yours.. Last edited by rage'nrat638; 07-12-2007 at 06:58 AM.



Register or Log In To remove these advertisements.

01-26-2007, 10:53 PM	#18
rage'nrat638 Account Suspended Join Date: Mar 2003 Location: THE FALL GUY CHICAGO IL Posts: 5,883	Re: Factory Holley ? here you go ron.. heres what the holley by numbers book say's 1973-74 chevy 350/454 eng. aftermarket 4360 model Last edited by rage'nrat638; 07-12-2007 at 06:58 AM.

01-27-2007, 12:11 AM	#19
Ron 586 RIP Mr Ron Join Date: Dec 2005 Location: Big Sandy, Tn. 38221 Posts: 8,166	Re: Factory Holley ? Rage n Rat, Your book don't happen to have a picture of that monster does it? The only reason that I have kept this setup is no one has ever seen one like it when I show it to them. Oh well gives me something to do tomorrow in the cold. __________________ Ron (Mr Round Tuit) Be kinder than necessary, for everyone you meet is fighting some kind of battle TN Message Forum TN Facebook Group SETN Truck Show My Photobucket

01-27-2007, 01:04 AM	#20
rage'nrat638 Account Suspended Join Date: Mar 2003 Location: THE FALL GUY CHICAGO IL Posts: 5,883	Re: Factory Holley ? heres that carb ron http://cgi.ebay.com/ebaymotors/Holle...QQcmdZViewItem Last edited by rage'nrat638; 07-12-2007 at 06:58 AM.

01-27-2007, 01:32 AM	#21
6772addict Registered User Join Date: Jan 2007 Location: Saskatoon, saskatchewan, Canada Posts: 8	Re: Factory Holley ? I'm looking at a big block interchange manual and there is quite a list of 396's that have holley carbs. Most of them are in the muscle cars but your truck may have been ordered with a passenger car block. I have a 69 CST with the 396 and it came from the factory with a passenger car hi-perf block. The original owner ordered it that way. Get me your block # and I can cross reference it to see what model it is and if its original. Hope I can help.

Register or Log In To remove these advertisements.