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#1 |
Registered User
Join Date: May 2013
Location: Post Falls, ID
Posts: 896
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throttle linkage difference from 2-jet to Q-Jet?
So, I burned up the ol 327 in my '68 about 3 years ago:
https://67-72chevytrucks.com/vboard/...d.php?t=824795 ...it must not have been too bad 'cuz I'm still driving it. However, I have been building a 350 and am very close to swapping it in. about the only thing left to do is find a 4bbl manifold with the oil filler neck and build a Quadra-jet My question is about the throttle linkage: is there a different rod that runs from the pedal to the carb for a Quadra-Jet? is it the same rod? if it's different, where can I find one? anybody have a part number? can I just bend one up? would I be better off switching to a cable? is there a kit to do that? I don't want to get that close and wind up waiting for something to be delivered. what are my options?
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#2 |
Senior Member
![]() Join Date: Jun 2005
Location: Winona Lake, IN
Posts: 6,299
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Re: throttle linkage difference from 2-jet to Q-Jet?
You can convert to cable. There may be an aftermarket kit available, but it's easy to do the conversion with factory parts. You will need the pedal assy from a 71 or 72, the cable, and the cable bracket that fits on the left rear carb stud/bolt. You will also need an adapter plate for the firewall. I made my own plate. Here is a thread on doing the conversion:
https://www.67-72chevytrucks.com/vbo...d.php?t=669995
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70 C/10 SWB 402/TH400/3.73 "The Needy Beast" 200,000 Mile Club Disc Brake Club Owner installed options: Front Sway Bar Power Steering Power Brakes Cigar Lighter Courtesy Lights Deluxe Side Markers Wiper Delay Power windows Power Locks Sniper EFI 2015 Silverado 1500 LS 4.3/6L80/3.23 lowered 2" front & rear |
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#3 | |
Registered User
Join Date: May 2013
Location: Post Falls, ID
Posts: 896
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Re: throttle linkage difference from 2-jet to Q-Jet?
Quote:
I'm almost wanting to stick with the metal rod, but I'm not sure where to get the correct one. I'm not opposed to swapping to cable, but not sure it's necessary I did find a manifold with the oil fill tube for a reasonable price (at least I think it was reasonable) 118 bucks delivered https://www.ebay.com/itm/17544710744...mis&media=COPY I found a manual choke 4m quadrajet amongst my junk, so that should work fine.
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#4 |
Senior Member
![]() Join Date: Apr 2016
Location: Cypress, TX
Posts: 3,741
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Re: throttle linkage difference from 2-jet to Q-Jet?
That's a hot slot manifold. You'll need to use the correct gasket set with it. Most people seal off the hot slot passages that pass heat directly to the quadrajet bottom because it's better with modern gas that way. I recommend having a look at my thread about it. https://www.67-72chevytrucks.com/vbo...d.php?t=762751
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#5 | |
Registered User
Join Date: May 2013
Location: Post Falls, ID
Posts: 896
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Re: throttle linkage difference from 2-jet to Q-Jet?
Quote:
I just checked my big box of Q-jet gaskets and I have the 2 composite gaskets but no stainless plate. I do have a 1" phenolic spacer that will work, I'll check to see if the stainless plate is available too. Thanks for the heads up! Now about that throttle linkage...
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#6 |
Registered User
Join Date: May 2013
Location: Post Falls, ID
Posts: 896
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Re: throttle linkage difference from 2-jet to Q-Jet?
Can anybody provide a pic of a 67-68 factory (solid rod) throttle linkage for a Quadra-Jet?
Is it the same as the 2-jet? Is there a part number I can look for? I'd rather not fabricobble one, I want it to look factory, if possible.
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#7 |
Who Changed This?
![]() Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,451
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Re: throttle linkage difference from 2-jet to Q-Jet?
My '70 with a BB and a Q-Jet has a solid rod, too. So maybe '67 to '70 will open up your search window? I can take a pic in the AM if you think it may help.
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~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA |
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#8 | |
Registered User
Join Date: May 2013
Location: Post Falls, ID
Posts: 896
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Re: throttle linkage difference from 2-jet to Q-Jet?
Quote:
If you have a stock setup and wouldn't mind taking a pic, that would be helpful. I just don't want to be hung up waiting on a silly throttle linkage after I swap engines.
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#9 |
Who Changed This?
![]() Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,451
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Re: throttle linkage difference from 2-jet to Q-Jet?
Here you go. The rod from the bellcrank to the carb is about 15".
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~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA |
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#10 |
Registered User
Join Date: May 2013
Location: Post Falls, ID
Posts: 896
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Re: throttle linkage difference from 2-jet to Q-Jet?
Perfect! Thank you!
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#11 |
Who Changed This?
![]() Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,451
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Re: throttle linkage difference from 2-jet to Q-Jet?
Soitenly!
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~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA |
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