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Difference in BB & SB chokes

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Old Dec 12, 2025 | 04:32 PM
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Default Difference in BB & SB chokes

Can anyone verify the only difference in these two chokes is the rod itself and the coil and dog house are the same?


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Old Dec 12, 2025 | 11:02 PM
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You have an L46, this is the coil used which is not the same as the one above.
https://www.zip-corvette.com/68-327-...il-spring.html
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Old Dec 13, 2025 | 12:52 AM
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Originally Posted by MelWff
You have an L46, this is the coil used which is not the same as the one above.
https://www.zip-corvette.com/68-327-...il-spring.html
Thank you and yes I know that, the stock coil won't work, the ones I posted go on the edelbrock 2101 coil perch which is what I am going to be installing.
I did confirm they are the same other than the linkage rod.
Thanks again
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Old Dec 13, 2025 | 10:12 AM
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Originally Posted by Golfobsessed
Thank you and yes I know that, the stock coil won't work, the ones I posted go on the edelbrock 2101 coil perch which is what I am going to be installing.
I did confirm they are the same other than the linkage rod.
Thanks again
If you look at this link for the choke perch it shows the #1931
https://www.edelbrock.com/shop/repla...d0oUYoANqZntZy
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Old Dec 13, 2025 | 10:21 AM
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Originally Posted by MelWff
If you look at this link for the choke perch it shows the #1931
https://www.edelbrock.com/shop/repla...d0oUYoANqZntZy
thank you again... I have the edelbrock choke perch on my 2101, the 1931 sb choke coil kit isn't available and hasent been for a while, the big block is avaiable and the rod can be adapted or made... I was just wondering if there were any other differences but discovered there is not.
I have time off over the holidays, gonna do an engine bay detail and add the 2101... just weighing out all my carb options right now, prefer not run the crossover so just researching all my options to be prepared when I do the project.
thanks again and if I do stick with divorced choke coil the 1935 will be an option with some rod modification
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Old Dec 13, 2025 | 10:30 AM
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Originally Posted by Golfobsessed
thank you again... I have the edelbrock choke perch on my 2101, the 1931 sb choke coil kit isn't available and hasent been for a while, the big block is avaiable and the rod can be adapted or made... I was just wondering if there were any other differences but discovered there is not.
I have time off over the holidays, gonna do an engine bay detail and add the 2101... just weighing out all my carb options right now, prefer not run the crossover so just researching all my options to be prepared when I do the project.
thanks again and if I do stick with divorced choke coil the 1935 will be an option with some rod modification
Have you considered an electric choke depending on year and what carburetor you are using
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Old Dec 13, 2025 | 10:40 AM
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Originally Posted by MelWff
Have you considered an electric choke depending on year and what carburetor you are using
absolutely and my preferred option... been heavy research and talking with people all week to find all my options, I dont do many things without researching them to death... even if it may come across as a dumb question it always makes for a better decision.
I've spent hours reading 100s of threads on many forums, watching tons of carb test results and reviews, lots of time this week on the phone with Holley, Edelbrock and Summit just gaining info, frankly when I travel I have lots of hotel and windshield time.
I realize carbs are like anything else... people will stand by their perferred manufacturer and are quite biased so like to get some neutral info where I can.

one more week of travel before starting the tear down and will move forward with a decision by this Monday
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Old Dec 16, 2025 | 08:20 AM
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You are planning to use an aluminum manifold so that is good. This mod below is not advised for a cast iron intake as it would take too long to operate the choke.

If you are not going to run the EFE flapper valve on the passenger side exhaust manifold exit, then you can add a stainless steel shim stock block off plate between the intake and intake gasket at the drivers side cylinder head exhaust outlet port. Only block the drivers side so you stop the major heat flow but keep the minimum heat that will operate the choke coil. Leave the passenger side exhaust port open. It will work well.

My Camaro is set up that way. I just fabbed up a strip and slid it in after loosting the intake bolts. Tightened them back up and drive on.
Add a bent over tab so you can tap it down into the engine.
Add a bent over tab so you can tap it down into the engine.
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Old Dec 16, 2025 | 04:14 PM
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Originally Posted by stingr69
You are planning to use an aluminum manifold so that is good. This mod below is not advised for a cast iron intake as it would take too long to operate the choke.

If you are not going to run the EFE flapper valve on the passenger side exhaust manifold exit, then you can add a stainless steel shim stock block off plate between the intake and intake gasket at the drivers side cylinder head exhaust outlet port. Only block the drivers side so you stop the major heat flow but keep the minimum heat that will operate the choke coil. Leave the passenger side exhaust port open. It will work well.

My Camaro is set up that way. I just fabbed up a strip and slid it in after loosting the intake bolts. Tightened them back up and drive on.
Add a bent over tab so you can tap it down into the engine.
Add a bent over tab so you can tap it down into the engine.
Originally Posted by stingr69
You are planning to use an aluminum manifold so that is good. This mod below is not advised for a cast iron intake as it would take too long to operate the choke.

If you are not going to run the EFE flapper valve on the passenger side exhaust manifold exit, then you can add a stainless steel shim stock block off plate between the intake and intake gasket at the drivers side cylinder head exhaust outlet port. Only block the drivers side so you stop the major heat flow but keep the minimum heat that will operate the choke coil. Leave the passenger side exhaust port open. It will work well.

My Camaro is set up that way. I just fabbed up a strip and slid it in after loosting the intake bolts. Tightened them back up and drive on.
Add a bent over tab so you can tap it down into the engine.
Add a bent over tab so you can tap it down into the engine.
Thank you... I put very short headers on this car to factory style side pipes so no heat riser

I was originally wanting to do away with the crossover in the intake which would send me to an electric choke set up... if I stay with the open crossover in the new intake (2101 edelbrock) I will just likely stay with my current carb as it runs great and been on the car since the 70s
in no big rush, still drive the car every weekend but have time off over the holidays and will at least do the intake install and engine bay detail
thanks again.
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