Vintage Oldsmobiles Curved Dash, Limited Touring, Models 40, 53, 66; Series 60, 70, 90

56 olds edelbrock carb swap

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Old Jul 31, 2011 | 02:59 PM
  #1  
56oldssuper88's Avatar
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youngin'
 
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From: nova
56 olds edelbrock carb swap

Just wondering if anyone has put an edelbrock/carter style carb on there 324 with an auto. I want to figure out how to make the linkage work correctly with the trans kickdown. If you have done this if you could post pics that would be awesome.
Old Aug 2, 2011 | 01:17 AM
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I put an edelbrock on briefly, first problem was an adapter to mount the carb then I made a bracket that mounted on the rear carb mounting bolt for the linkage to connect like it did on the stock carb. It ran ok but used twice a much gas as the stocker so I went back to the original carb and am still trying to figure out the hesitation of idle. Two rebuilds and three accelerator pumps and its getting better but not gone. So basically to answer your question if you have it mounted to the intake just make a bracket thats lets you connect up the linkage like it did on the original carb.
Old Aug 2, 2011 | 09:49 PM
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56oldssuper88's Avatar
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From: nova
I got the adapter and the carb is mounted. I have actually made a bracket but is the stock linkage adjustable enough for the trans to downshift correctly under throttle?
Old Aug 3, 2011 | 12:45 AM
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Yes the linkage for the trans is adjustable.
Old Aug 3, 2011 | 09:08 AM
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56oldssuper88's Avatar
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From: nova
Cool what I will do is mock it up and the adjust/ modify as needed. How bad was the gas mileage? What cfm carb did you use btw? Im using a 600.
Old Aug 4, 2011 | 01:20 AM
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I was using a 600 cfm and the mileage was prob 8 to 10 mpg. Good luck with it. I hope you can get better mileage than I did.
Old Aug 4, 2011 | 11:31 AM
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youngin'
 
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I hope so too lol. though my 96 Z/28 still only gets like 13 around town. I wont mind it anyway, the car will only be driven on weekends. My motor is also newly rebuilt so that may help. i also have an electronic ignition. Ill let you know when i get it on the road.
Old Sep 19, 2011 | 06:18 AM
  #8  
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have you figured out the swap yet? if you did, any tips or advice (or pics) would be great. I'm considering the same swap right now.
Old Oct 13, 2011 | 02:42 PM
  #9  
56oldssuper88's Avatar
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youngin'
 
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I have figured out what i have to do. in my case i need to get shorter rods that attach to the bell crank or just a shorter rod to go from the bell crank to the carb;and then I made a plate to bolt on the rear drivers side carb stud that I can bolt the bell crank to. Then the rest is just adjusting the linkages as needed. The only thing you have to do is figure out how to get the throttle linkage and the TV linkage to work in the right ratio. The TV linkage must be fully extended when the throttle is wide open.
Old May 4, 2015 | 06:25 PM
  #10  
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will the edelbrock bolt up to the stock manifold?
Old May 30, 2021 | 01:35 PM
  #11  
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Originally Posted by 55/98
I was using a 600 cfm and the mileage was prob 8 to 10 mpg. Good luck with it. I hope you can get better mileage than I did.
A 600 carb is WAY too big. A 500 cfm is a better choice tho its too big too
Old May 30, 2021 | 09:06 PM
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I see you are new. This thread started 10 years ago and the last post was 6 years ago. You are probably not going to get a response.
Old May 31, 2021 | 07:34 AM
  #13  
Tedd Thompson's Avatar
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From: Forest Ranch Ca.
Old thread but if anyone is interested I would just rebuild the 4gc that is on it and save yourself the grief of reinventing the wheel. Lots of 4gc's out there still.....Tedd
Old May 31, 2021 | 07:45 AM
  #14  
redoldsman's Avatar
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X2 on that Tedd. They are not difficult to rebuild.
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