Author Topic: GM Holden Quadrajet 17110649?  (Read 173 times)

Offline Smitty

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GM Holden Quadrajet 17110649?
« on: July 19, 2020, 01:16:54 AM »
G'day from Australia

GM reckon the part number for the Quadrajet ( I am using on my circuit race car)
is 17110649 per the parts catalogue

but the details stamped on the side of the carb is
17084596 1055 JRB

Anyone have any more they can share on this ?



TIA


Online Cliff Ruggles

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Re: GM Holden Quadrajet 17110649?
« Reply #1 on: July 19, 2020, 03:19:35 AM »
Pictures of it would help.

The Holden Q-jets were pretty much the same as the ones used here.  Early units were similar to Chevy units, then they used some Olds style for a few years close to the 1970-74 Olds carbs used here.

In later years they used a front inlet hot-air choke model very close to the Olds carbs used here from 1975-1980.

The tune in similar fashion and use the same parts.......

Offline hiy_po

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Re: GM Holden Quadrajet 17110649?
« Reply #2 on: July 19, 2020, 08:52:28 PM »
!985 VK Commodore 304/308 carb
Our 308s are extremely close in design to the Oldsmobile V8. Right down to the firing order. They are a very light weight cast iron block V8
« Last Edit: July 19, 2020, 09:09:09 PM by hiy_po »

Offline Smitty

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Re: GM Holden Quadrajet 17110649?
« Reply #3 on: July 20, 2020, 01:53:28 PM »
pics..





closer shot... during strip down and rebuild




HTH...

Online Cliff Ruggles

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Re: GM Holden Quadrajet 17110649?
« Reply #4 on: July 21, 2020, 03:02:57 AM »
Pretty much the equivalent of a 1979-80 Oldsmobile unit.  It would take the same parts and tune in similar fashion. 

Very nice unit, big CFM, APT, front inlet and convert easily to electric choke.

It's very close to the 1977 Pontiac carb I use on my own engine and it supports over 550hp.  Nothing I've tested against it to date will outrun it, dyno or at the track........Cliff

https://www.youtube.com/watch?v=6zVdoLR-VzM

Offline Smitty

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Re: GM Holden Quadrajet 17110649?
« Reply #5 on: July 22, 2020, 04:08:48 AM »
Pretty much the equivalent of a 1979-80 Oldsmobile unit.  It would take the same parts and tune in similar fashion. 

Very nice unit, big CFM, APT, front inlet and convert easily to electric choke.

It's very close to the 1977 Pontiac carb I use on my own engine and it supports over 550hp.  Nothing I've tested against it to date will outrun it, dyno or at the track........Cliff

https://www.youtube.com/watch?v=6zVdoLR-VzM

... thanks Cliff
appreciate the feedback!
and
interestingly, a thought. Its got parts in it I bought from you .. maybe 7-8 years ago
(gasket sets, jets, hangers and APT springs)

it fuels a 5litre GM Holden V8 as pictured above.... in my '85 circuit race car( pic below)
Motorsport guys here go... wow running a Quaddie eh. You should run a Holley.
Naah.... this thing comes out of corners and out accelerates larger engined cars
on the race track. Impressive for a mildly modded carb.  8)

The only real issue in the early days was fuel supply... fixed by installing larger 1/2" hardline
and a lift pump and surge tank (in addition to the fuel cell). Will hold 7000 rpm in 3rd gear
on long straights easy now...

Thanks again... :)



« Last Edit: July 22, 2020, 04:14:46 AM by Smitty »