Electric choke upgrade - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Vintage Windmills · 08-04-2012, 08:07 AM

I purchased a carb for my 72 K20 restoration but it came with an electric choke, which I wasn't expecting. Before I return it, are these significantly better than the stock thermal one? Here is a pic of both, original and electric. If I keep it I'm going to have to put a switch somewhere in the cab to activate, right? Also, not a fan of the non stock appearance.
Thanks,

SS Tim · 08-04-2012, 08:57 AM

Jud,
I am surprised that you are not having your carb. done by a restoration shop and instead bought a replacement. Look into what it would cost and to have it optimized for your engine setup.

**passthebuck** · 08-04-2012, 09:59 AM

Yes, they are substintially better than the hot-air or the even older bio-metallic coil on the manifold chokes. Less hassle, faster warm ups... All you need is a hot-in-run wire to the terminal & that should be about it. Your new carb is a better quality casting, has nice features such as Adjustable Part Throttle (APT) and better availability on jets/rods & spare parts. You'll barely see the choke under the air cleaner. Save your old carb on the shelf for a full-on resto & enjoy the (more) modern q-jet features.

An excellent carb resource:

http://www.cliffshighperformance.com...machinesforum/

So.Cal.Super · 08-04-2012, 11:58 AM

I never had the original Divorced choke on mine, The P/O gave me the just the q-jet and I swapped out the edelbrock after I had the Q rebuilt. I searched for a new original style and couldn't find the whole setup, all you need is to run the hot wire to an ignition on source. it will choke when needed.

Vintage Windmills · 08-04-2012, 09:11 PM

thanks all.

Tim, I was going to have mine rebuilt but I was told that the later design would gain 1mpg or more over my original. I was also told all linkages would bolt right up, so i thought that meant choke and throttle. This one was custom built for my engine. Goal of this truck is to perform as good as possible while retaining a stock appearance. I will set the air cleaner on and see how noticeable the choke is.

Interesting to read the choke is automatic, I wonder how it knows when to activate and when not? is there a temperature sensor built in?

08-04-2012, 08:07 AM	#1
Vintage Windmills Vintage 4x4s Join Date: Sep 2010 Location: Prior Lake, MN Posts: 4,305	Electric choke upgrade I purchased a carb for my 72 K20 restoration but it came with an electric choke, which I wasn't expecting. Before I return it, are these significantly better than the stock thermal one? Here is a pic of both, original and electric. If I keep it I'm going to have to put a switch somewhere in the cab to activate, right? Also, not a fan of the non stock appearance. Thanks, Attached Images __________________ 67 GMC K1500 Custom- 305V6 SM420, PTO, Ram Assist, yellow (the outcast) (project period correct upgrades) 67 GMC C2500 351V6 TH400, AC, PS, PB (can't decide what to do with. Update, decided to keep and will restore ) 86 CHV K30 502 th400, apple red NEW 71 CHV K20 350 SM465, ochre (saved work truck) 71 CHV K20 292 SM465, white, tach, PTO, (future project) 72 CHV K20 350 350th, medium blue (project stocker) 01 CHV K2500hd crew, indigo blue ^3 dont run and the others don't see winter either '86 K30 Cummins "Fireside" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=649649 '71 K20 "get driveable" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=590642 '72 K20 Build Thread: http://67-72chevytrucks.com/vboard/s...=493477&page=6

08-04-2012, 08:57 AM	#2
SS Tim Registered User Join Date: Aug 2010 Location: Edwards, CA Posts: 7,503	Re: Electric choke upgrade Jud, I am surprised that you are not having your carb. done by a restoration shop and instead bought a replacement. Look into what it would cost and to have it optimized for your engine setup. __________________ Thanks, Tim * VIN/Model Decoders * Power Team Charts (engine/transmission/gear ratio) * Post Your Pickup SPID Blazer SPID Suburban/Panel SPID * RTFM ... Read The Factory Manuals... download 'em here Highlanders Do you have a 1972 Plaid Pickup? Plaid Blazer ** Plaid Suburban

08-04-2012, 09:59 AM	#3
passthebuck Sisyphus was my mentor! Join Date: Sep 2002 Location: Carleton Place, Ontario CANADA Posts: 984	Re: Electric choke upgrade Yes, they are substintially better than the hot-air or the even older bio-metallic coil on the manifold chokes. Less hassle, faster warm ups... All you need is a hot-in-run wire to the terminal & that should be about it. Your new carb is a better quality casting, has nice features such as Adjustable Part Throttle (APT) and better availability on jets/rods & spare parts. You'll barely see the choke under the air cleaner. Save your old carb on the shelf for a full-on resto & enjoy the (more) modern q-jet features. An excellent carb resource: http://www.cliffshighperformance.com...machinesforum/ __________________ passthebuck #5642 -TWO 1967 GMC 910's. One with L6/3-on-the tree and the other with 355 w/435hp & a 700r4. -a 2013 Honda Civic as my "sensible" car

08-04-2012, 11:58 AM	#4
So.Cal.Super It'll Buff Out! Join Date: Apr 2007 Location: San Diego Posts: 603	Re: Electric choke upgrade I never had the original Divorced choke on mine, The P/O gave me the just the q-jet and I swapped out the edelbrock after I had the Q rebuilt. I searched for a new original style and couldn't find the whole setup, all you need is to run the hot wire to an ignition on source. it will choke when needed. __________________ "Instructions are just another mans opinion" Become a Supporting Member http://67-72chevytrucks.com/vboard/payments.php Man Card Rules http://67-72chevytrucks.com/vboard/s...d.php?t=634550 72 Chevy Cheyenne Super 400 LWB

08-04-2012, 09:11 PM	#5
Vintage Windmills Vintage 4x4s Join Date: Sep 2010 Location: Prior Lake, MN Posts: 4,305	Re: Electric choke upgrade thanks all. Tim, I was going to have mine rebuilt but I was told that the later design would gain 1mpg or more over my original. I was also told all linkages would bolt right up, so i thought that meant choke and throttle. This one was custom built for my engine. Goal of this truck is to perform as good as possible while retaining a stock appearance. I will set the air cleaner on and see how noticeable the choke is. Interesting to read the choke is automatic, I wonder how it knows when to activate and when not? is there a temperature sensor built in? __________________ 67 GMC K1500 Custom- 305V6 SM420, PTO, Ram Assist, yellow (the outcast) (project period correct upgrades) 67 GMC C2500 351V6 TH400, AC, PS, PB (can't decide what to do with. Update, decided to keep and will restore ) 86 CHV K30 502 th400, apple red NEW 71 CHV K20 350 SM465, ochre (saved work truck) 71 CHV K20 292 SM465, white, tach, PTO, (future project) 72 CHV K20 350 350th, medium blue (project stocker) 01 CHV K2500hd crew, indigo blue ^3 dont run and the others don't see winter either '86 K30 Cummins "Fireside" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=649649 '71 K20 "get driveable" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=590642 '72 K20 Build Thread: http://67-72chevytrucks.com/vboard/s...=493477&page=6

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