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73 340 throttel bracket and kick down linkage #1235582
05/18/12 10:13 PM
05/18/12 10:13 PM
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Bethel Ct
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AdamR Offline OP
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Hey guys, Im looking for pictures of the correct throttle bracket, return spring bracket and kick down linkage for a 73-340 or any thermoquad equipped 340. The stuff I have puts the kick down linkage at a weird angle and binds up under full throttle.

Re: 73 340 throttel bracket and kick down linkage [Re: AdamR] #1235583
05/18/12 11:44 PM
05/18/12 11:44 PM
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Iowa
burdar Offline
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I doubt these will be of much help but it's all I have. The 73's used a return spring bracket on the second intake bolt.(I think 340's and 318's were the same in that reguard) In 74, the bracket was changed and used two of the intake bolts.




7211827-kickdown[1].jpg (243 downloads)
Re: 73 340 throttel bracket and kick down linkage [Re: AdamR] #1235584
05/19/12 11:19 AM
05/19/12 11:19 AM
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NB, Canada
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moparfan53 Offline
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The 73 parts book shows two 340 setups, one for A body and one for the rest. Here they are.

Hope they help.





Re: 73 340 throttel bracket and kick down linkage [Re: AdamR] #1235585
05/19/12 11:24 AM
05/19/12 11:24 AM
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It's a dry heat
gtx6970 Offline
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I haven't been able to find concrete evidence as to which bracket was used on the post 71 small blocks.
So bear with me here as I am relying on the manufacturer.
BUT, IMO it comes down to what style of kickdown linkages are being used.

7212206-561.jpg (105 downloads)
Re: 73 340 throttel bracket and kick down linkage [Re: gtx6970] #1235586
05/19/12 11:25 AM
05/19/12 11:25 AM
Joined: Jun 2003
Posts: 21,448
It's a dry heat
gtx6970 Offline
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It's a dry heat
OR

7212209-0060.jpg (121 downloads)
Re: 73 340 throttel bracket and kick down linkage [Re: gtx6970] #1235587
05/19/12 11:28 AM
05/19/12 11:28 AM
Joined: Jun 2003
Posts: 21,448
It's a dry heat
gtx6970 Offline
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It's a dry heat
Same thing on the return spring bracket.

7212212-736.jpg (110 downloads)
Re: 73 340 throttel bracket and kick down linkage [Re: gtx6970] #1235588
05/19/12 11:30 AM
05/19/12 11:30 AM
Joined: Jun 2003
Posts: 21,448
It's a dry heat
gtx6970 Offline
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It's a dry heat
OR,
( I personally think this is 2 barrel only,and MAYBE 1974 360 4 barrel)

7212215-538.jpg (105 downloads)
Re: 73 340 throttel bracket and kick down linkage [Re: gtx6970] #1235589
05/19/12 11:53 AM
05/19/12 11:53 AM
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Bethel Ct
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AdamR Offline OP
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Quote:

I haven't been able to find concrete evidence as to which bracket was used on the post 71 small blocks.
So bear with me here as I am relying on the manufacturer.
BUT, IMO it comes down to what style of kickdown linkages are being used.




I have the second bracket which I think may be correct but the rod from the bracket to the carb I have is wrong. The 2bbl return spring bracket I tweaked and it works fine for now at least.

I'll snap some pictures of what I have.

Re: 73 340 throttel bracket and kick down linkage [Re: AdamR] #1235590
05/19/12 12:33 PM
05/19/12 12:33 PM
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AdamR Offline OP
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Heres a few pictures I got on fabo. 73 Dart Sport 340. Im working on a 73 Duster, converting the 318 from 2bbl to 4bbl using a 73 TQ intake and 73 TQ carb. Looks like I have the correct bracket but the upper linkage I have is incorrect. Not sure about the lower linkage. Im thinking it may be the same 2bbl/4bbl

7212284-73340kd1.jpg (202 downloads)
Re: 73 340 throttel bracket and kick down linkage [Re: AdamR] #1235591
05/19/12 12:34 PM
05/19/12 12:34 PM
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AdamR Offline OP
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2nd

7212285-73340kd2.jpg (882 downloads)
Re: 73 340 throttel bracket and kick down linkage [Re: AdamR] #1235592
05/19/12 05:39 PM
05/19/12 05:39 PM
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near New Haven, CT
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fireeng Offline
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I just switched from a 318 2 barrel to 340 thermoquad and the 318 linkage was the same. I will try to post a few pics tonight.


2016 Diesel Ram 3500 Mason Dump
1971 Challenger
2013 Jeep Wrangler
1979 Dodge Ram Power Wagon 400 Mini Pumper
My other car is a Fire Truck.
Re: 73 340 throttel bracket and kick down linkage [Re: fireeng] #1235593
05/19/12 08:12 PM
05/19/12 08:12 PM
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Iowa
burdar Offline
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My 73 318 used the single bolt throttle return spring bracket. I thought the two bolt brackets were 74 only.

You must be working on an A-body with the two piece kickdown linkage. E-bodies used a single piece linkage.(E-body 340 linkage had a yellow paint mark on the carb end as seen in my picture above)

Last edited by burdar; 05/19/12 08:17 PM.
Re: 73 340 throttel bracket and kick down linkage [Re: burdar] #1235594
05/19/12 09:52 PM
05/19/12 09:52 PM
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Bethel Ct
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AdamR Offline OP
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yes, Its an a body

Re: 73 340 throttel bracket and kick down linkage [Re: AdamR] #1235595
05/19/12 10:44 PM
05/19/12 10:44 PM
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near New Haven, CT
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fireeng Offline
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pics from an e body. carb is a 74 model using 71 318 linkage.


2016 Diesel Ram 3500 Mason Dump
1971 Challenger
2013 Jeep Wrangler
1979 Dodge Ram Power Wagon 400 Mini Pumper
My other car is a Fire Truck.
Re: 73 340 throttel bracket and kick down linkage [Re: fireeng] #1235596
05/19/12 10:44 PM
05/19/12 10:44 PM
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near New Haven, CT
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fireeng Offline
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2016 Diesel Ram 3500 Mason Dump
1971 Challenger
2013 Jeep Wrangler
1979 Dodge Ram Power Wagon 400 Mini Pumper
My other car is a Fire Truck.
Re: 73 340 throttel bracket and kick down linkage [Re: fireeng] #1235597
05/19/12 10:45 PM
05/19/12 10:45 PM
Joined: Apr 2003
Posts: 915
near New Haven, CT
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fireeng Offline
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near New Haven, CT
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2016 Diesel Ram 3500 Mason Dump
1971 Challenger
2013 Jeep Wrangler
1979 Dodge Ram Power Wagon 400 Mini Pumper
My other car is a Fire Truck.
Re: 73 340 throttel bracket and kick down linkage [Re: fireeng] #1235598
05/20/12 09:11 AM
05/20/12 09:11 AM
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Bethel Ct
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AdamR Offline OP
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Thats totally different then the A body stuff. I'll snap the pictures of what I have today.

Re: 73 340 throttel bracket and kick down linkage [Re: AdamR] #1235599
05/20/12 06:20 PM
05/20/12 06:20 PM
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near New Haven, CT
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fireeng Offline
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Just to clarify, the throttle linkage from the 318 was the same. The kickdown linkage was different on my swap.


2016 Diesel Ram 3500 Mason Dump
1971 Challenger
2013 Jeep Wrangler
1979 Dodge Ram Power Wagon 400 Mini Pumper
My other car is a Fire Truck.






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