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#1 |
Registered User
Join Date: Sep 2000
Location: Texas
Posts: 189
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Anyone know what used to be on this Quadrajet?
I picked up this Quadrajet at a swap meet a couple of years ago. I didn't notice until I started disassembling it on Sunday that there is a broken piece on one of the linkages. Was this something that is vital to the carbureutor's operation, or am I going to be ok without it?
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#2 |
Enjoying left field
Join Date: Jun 2008
Location: Dillon Montana
Posts: 900
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Re: Anyone know what used to be on this Quadrajet?
If its a mid 70s 0r 80s vintage it seems like some of them had an idle solenoid or something like that. I've had a few of them. never could get them to work right. But when they do they're a nice carb.
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#3 |
Senior Member
Join Date: Jul 2001
Location: Muskegon,MI,USA
Posts: 6,026
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Re: Anyone know what used to be on this Quadrajet?
The area in question is where the hole was for the kickdown for the transmission as in the cable hookup for a TH 350.
If your truck is a stick shift or has a TH 400 transmission then you will not need it. Jim
__________________
1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end 1965 Impala SS 400 sbc, Muncie rock crusher 1966 Impala SS 396 bbc, TH 400 1969 El Camino, 350 sbc, TH 350 1971 Snowplow built on a Blazer frame 1972 GMC Short bed, stepside, TH 400, 427 BBC |
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#4 |
Registered User
Join Date: Sep 2000
Location: Texas
Posts: 189
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Re: Anyone know what used to be on this Quadrajet?
That stinks, because I have 3 on the tree now, but plans are for a turbo 350. I wonder if something could be fabbed up without looking like a total hack-job.
Anyone have a picture of this area without that part broken off? I want to see what kind of work I have in front of me. I know several people would say to get a different carb to start with, but I'm stubborn and want to make this one work if I can. |
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#5 |
Registered User
Join Date: Sep 2000
Location: Texas
Posts: 189
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Re: Anyone know what used to be on this Quadrajet?
Let me elaborate a little about the carb, since there are tons of different linkages amongst the years. The serial number has this one coming off a 72 Chevy pickup, which is what the seller said it came off of. So, if anyone has a picture of their Quadrajet from their 72 Chevy pickup, that would be perfect.
Thanks! |
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#6 |
Active Member
![]() Join Date: Jul 2007
Location: Centrally located between Houston, Austin and Waco. BCS area.
Posts: 7,947
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Re: Anyone know what used to be on this Quadrajet?
Not sure what year this is out of but I think it would be easy to replace that piece.
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#7 |
Son of a gun
Join Date: Jan 2007
Location: Hot Springs, Arkansas
Posts: 1,636
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Re: Anyone know what used to be on this Quadrajet?
The bases can be swapped out, or the throttle shaft replaced, etc. What are the numbers on the carb?
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Bill BEATERS ARE NEATER |
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#8 |
Registered User
Join Date: Oct 2005
Location: Overland Park, Ks.
Posts: 5,216
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Re: Anyone know what used to be on this Quadrajet?
They run into the manifold on some applications so guys cut them off.
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#9 |
Registered User
Join Date: Sep 2000
Location: Texas
Posts: 189
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Re: Anyone know what used to be on this Quadrajet?
Bus Ted Knuckle - The serial number is 7042208. I didn't know the bases were interchangeable unless it's from a carb with an identical serial number.
Wrenchbender Ret - I figured it was probably something along those lines. |
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#10 |
Son of a gun
Join Date: Jan 2007
Location: Hot Springs, Arkansas
Posts: 1,636
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Re: Anyone know what used to be on this Quadrajet?
7042208 means it is a 72 model carb, so it is a 4MV (correct for our trucks) any base but the earliest 4MV base will interchange. Just look for one that isn't wore out.
M4M q-jet bases (later model carbs) will not fit. I think you can still hook up your TH350 kickdown to the bracket you have though, in the hole in the tab that hangs down the lowest...just fab up a post to attach it to, or use a bolt w/ a lock nut arrangement. If that won't work, jsut experiment with bending or adding to the bracket, you should be able to find something that will work.
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Bill BEATERS ARE NEATER Last edited by Bus Ted Knuckle; 07-29-2008 at 07:23 PM. |
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#11 |
Senior Member
Join Date: Jul 2001
Location: Muskegon,MI,USA
Posts: 6,026
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Re: Anyone know what used to be on this Quadrajet?
Here is a picture of a 72 carb on a 69 truck that shows the part and the cable for a TH 350.
Jim
__________________
1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end 1965 Impala SS 400 sbc, Muncie rock crusher 1966 Impala SS 396 bbc, TH 400 1969 El Camino, 350 sbc, TH 350 1971 Snowplow built on a Blazer frame 1972 GMC Short bed, stepside, TH 400, 427 BBC |
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#12 |
Registered User
Join Date: Sep 2000
Location: Texas
Posts: 189
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Re: Anyone know what used to be on this Quadrajet?
Thanks for the info Bus Ted Knuckle and the picture Jim! If you have any more pictures, I'd love to see them. It can only help me figure out what I want to do.
I think I'll start by taking a trip to the junkyard this weekend to hunt for a baseplate. I can usually find a Quadrajet on an old van. Usually the cars and trucks are picked over, but the vans get overlooked alot. If I can't find something suitable, I'll have ask my uncle to fab something up for me. He a machinist, and I've seen him fabricate some stuff you wouldn't believe! |
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#13 |
Registered User
Join Date: Aug 2006
Location: Bakersfield,CA
Posts: 7,893
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Re: Anyone know what used to be on this Quadrajet?
Bus Ted Knuckle - not to take from the thread but what site did you use to decode the carb number?
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-steven Alte Seele S.S. "Allison" '72 C/10 LWB 350SB/TH350 - DD PITBULL IS NOT A CRIME |
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#14 |
New Member
![]() Join Date: May 2007
Location: Las Vegas
Posts: 33
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Re: Anyone know what used to be on this Quadrajet?
Me either on stealing the thread but here's a decode.
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Steve 67' C20 - Newest - My junkyard dog and work in progress Last edited by 67_C20Pres; 07-30-2008 at 06:02 AM. |
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#15 |
Registered User
Join Date: Sep 2000
Location: Texas
Posts: 189
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Re: Anyone know what used to be on this Quadrajet?
I like this site for decoding a carburetor:
http://www.carburetion.com/Number/bynumber.asp All you have to do is type in the serial number at it does the rest. |
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#16 |
Son of a gun
Join Date: Jan 2007
Location: Hot Springs, Arkansas
Posts: 1,636
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Re: Anyone know what used to be on this Quadrajet?
I don't use a site, I have a pretty impressive collection of old manuals...that is where my info comes from.
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Bill BEATERS ARE NEATER |
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