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08-19-2008, 02:29 PM | #1 |
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accelerator linkage to carb - too short
I pulled the motor/trans from a 67 and bolted it into the 70 project truck...
Motor is a 350 Trans is a TH400 Motor is installed on the front-most engine tower bolts (as it was in the 67) - and the trans is on the x-member and the drive shaft is also installed...I copied the bolt holes used on the 67 when I transferred it over... Now - the 67 had some janky (piece of wire) accelerator linkage from the gas pedal arm on the firewall to the carb...the stock one is still on the pedal arm on the 70 and it is too short to reach the carb...(I can get pix if that will help you understand what I am saying) What have you guys done to correct this - is there a longer linkage or do I need to fab something up? I can't move the engine back to the other tower bolt holes since everything else is already bolted down and fits like it should (well except for the linkage to the carb). Thanks in advance for your input. If you need more details - just ask. |
08-19-2008, 03:03 PM | #2 |
Truck and auto performance nut
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Re: accelerator linkage to carb - too short
go buy a universal cable in the aftermarket parts section at Autozone or where ever local Auto store (cheap)...or order something like a Lokar cable setup from Summit or Jegs (spendy).
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Kurt - '68 GMC short step - NIB '09 LY6 6.0L crate motor w/mods, NIB '12 crate 4L85e w/billet 3k stall Circle D, 3.73 posi 12 bolt, DynaTech f-swap headers, 3/4 drop, handling mods, etc. - my toy '72 Chevy LWB C-10 Highlander - 350/350 ps/pb/tilt/ac - not original but close '06 Chevy TrailBlazerSS - LS2/4L70e - little black hot rod SUV - my DD '18 Kia Sorento - wife's econo-driver '95 Chevy S10 - reg cab shortbed, LS, 4.3, auto... my '68's powertrain and chassis build -links broken A surprise phase - carb to efi -links broken |
08-19-2008, 03:44 PM | #3 |
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Re: accelerator linkage to carb - too short
I think he has a rod instead of a cable. Not sure what year they went to a cable. A stock V-8 rod should work. You could also try a 6cyl. rod. Or convert over to cable (73-87). There's a How-To in the FAQ.
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08-19-2008, 03:56 PM | #4 |
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Re: accelerator linkage to carb - too short
yup - rod - except the rod won't reach the carb (too short) - as mentioned the PO had a piece of wire on there to the pedal linkage and a spring to pull it back (yes creative engineering at it's finest)...
I saw the FAQ post about swapping to the cable set up...hoping I can find another way to do this - since going that route I would have to find a used cable set up and then wait for shipping, then have nice weather and the time to do the swap - I am really starting to dislike this project - one thing after another. |
08-19-2008, 04:02 PM | #5 |
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Re: accelerator linkage to carb - too short
My 71 GMC has a cable operated throttle, I’m pretty sure it’s factory.
s/t
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1971 GMC Sierra Grande, 1/2 ton short wide, original 4 bolt 010 020 block & heads. (matching #'s). 383 stroker, SMI q jet 750 cfm, Lunati Voodoo 60102 cam, Scorpion roller rockers, Spin Tech pro street mufflers with X pipe. |
08-19-2008, 04:32 PM | #6 |
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Re: accelerator linkage to carb - too short
it's factory for 71 & 72 ... but 67-70 came with rods
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08-19-2008, 06:08 PM | #7 |
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Re: accelerator linkage to carb - too short
in cases like this in the past i've found a good solution is to extend the rod so it reaches the carb
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08-19-2008, 06:22 PM | #8 |
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Re: accelerator linkage to carb - too short
I got my inline 6 rod connected to a piece of cable and fabricated a "connection" piece to the quadrajet. But real soon I am going to lengthen the rod with a piece of something and then I`ll be gettin rid of that cable all together.
From what ive seen, the cable throttle linkage,factory, started in the 72`s
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08-19-2008, 06:59 PM | #9 |
its all about the +6 inches
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Re: accelerator linkage to carb - too short
cable started in 71 due to a recall for bad motor mounts.
Go to NAPA and get some all thread, and make a throttle rod untill you can locate the correct piece. |
08-19-2008, 07:01 PM | #10 |
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Re: accelerator linkage to carb - too short
I fabbed mine out of 3/16" round stock and then had to put a couple bends in it to clear my tv cable bracket I had to fab all to change intakes and head gaskets. Throttle rod kind of looks like a z bar with a hook on the end.
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08-19-2008, 07:05 PM | #11 |
Tasty Cakes!
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Re: accelerator linkage to carb - too short
Damn LHM you're on fire today! The PO used all thread and I still have it on there. Seems to work ok until I can change mine over to cable.
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08-19-2008, 07:29 PM | #12 |
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Re: accelerator linkage to carb - too short
A piece of all thread and spherical rod ends. Mine have all had an L bend at one end and a threaded barrel at the other, just turn the barrel to lengthen or shorten. So here a new rod will do it, Summit sells a throttle kit:
AFC-10175-18 AFCO Adjustable Throttle Rod Kits THROTTLE ROD KIT W/ 18" SOLID ROD 9/5/08 $22.95 MRG-3815 Mr. Gasket Universal Linkage Rods Throttle Linkage Rod, 11 1/ 2 in. Long, 1/ 4 in.-28 Threads, Each Today $15.39 EDL-8010 Edelbrock Intake Manifold Installation Accessories Throttle Rod Extension, 7.50 in. Long, GM Cable, Each Today $17.95 |
08-19-2008, 10:22 PM | #13 | |
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Re: accelerator linkage to carb - too short
Quote:
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08-19-2008, 11:01 PM | #14 |
Still Just Havin Some Fun!
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Re: accelerator linkage to carb - too short
not sure if you can tell from the photo. I did what everyone else mentioned and used all thread.
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08-20-2008, 12:06 PM | #15 |
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Re: accelerator linkage to carb - too short
On a th400 the "kickdown" is electrically controlled, I added a micro switch under the dash, that when i push the accelerator all the way down, contacts the switch and lets the tranny drop a gear....
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08-20-2008, 12:25 PM | #16 |
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Re: accelerator linkage to carb - too short
Thats what i was saying you almost have to make your own because the stock switches are hard to find. I bought a after market from Jegs and it was almost $100 all stainless and cable operated.
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08-20-2008, 12:47 PM | #17 |
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Re: accelerator linkage to carb - too short
I haven't got that far yet - the old setup had a wire going on the trans - but no connection to anywhere else - just a wire with a female spade terminal on it -
You have to wonder at how people get things accomplished...when they do everything half way. |
08-20-2008, 01:05 PM | #18 |
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Re: accelerator linkage to carb - too short
Go to lowes and buy the all thread then go to the hardware area and buy the ends that screw on the thread as in the picture above post. You can get everything at Lowes as long as you don't want Billet.
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08-20-2008, 09:22 PM | #19 |
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Re: accelerator linkage to carb - too short
Heres a pic of the rod I fabbed in about 5 min's.
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Troy 1965 Chevy Bagged,361 sbc,voodoo cam,1.5 full roller rockers,patriot 185cc vortec heads 2.02-1.60,vortec weiand polished intake,demon carb my truckhttp://67-72chevytrucks.com/vboard/s...d.php?t=332884 Big Red Dog build http://67-72chevytrucks.com/vboard/s...d.php?t=572274 |
09-11-2008, 09:25 PM | #20 |
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Re: accelerator linkage to carb - too short
I found the all-thread at Lowe's - but I could not find the ends to make this possible - anybody got a part # or a source online to find just the spherical rod ends so I can get this going?
Thx everybody! |
09-12-2008, 08:02 AM | #21 | |
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Re: accelerator linkage to carb - too short
Quote:
http://www.mcmaster.com/ Type in (rod ends)
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