Mechanical choke vs Electric - Team Camaro Tech
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post #1 of 3 (permalink) Old Oct 16th, 03, 03:39 AM Thread Starter
Senior Tech
Join Date: May 2001
Location: Camillus NY
Posts: 165

I'm now looking for carb to fit on my edelbrock performer intake on top of my 327. I think that 600CFM is the right size however what is the major advantage/disadvantage between mech and electric choke?


1968 Camaro Z28 clone 327 .030 over, Muncie M20, DUI coil, Edelbrock Performer w/1406 , headers, 274 cam
1963 Chevy Biscayne-2 door, 283 2bbl, powerglide, Mallory Digital ignition
1985 Z-28 LG4, Edelbrock hdrs, Lakewood control arms
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post #2 of 3 (permalink) Old Oct 16th, 03, 05:25 AM
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Matt Jones
Join Date: Jan 2002
Location: Renton, WA USA
Posts: 2,765

I can't think of any disadvantage to the electric choke. It's kinda like power steering, there really isn't any downsides. Some people have problems with them, but I've never had one go faulty. Well, it does cost more, but I think it's worth it.

Matt Jones
Lead Mechanical Engineer
Art Morrison Ent. Inc.
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post #3 of 3 (permalink) Old Oct 16th, 03, 01:52 PM
Senior Tech
Join Date: Mar 2002
Location: Austin, TX, USA
Posts: 5,277

The only disadvantages to an electric choke is that they tend to choke a warm motor more than they should. The choke coil cools off faster than the engine itself.

The disadvantages to a mechanical choke is that they require manifold heat which robs performance. Also, the heat riser passage gets blocked over time and is a real pain (and expensive) to fix.

Go with the electric and give it a seasonal adjustment as needed to help with the warm choke issue and you'll be happy I'm sure.


68 Coupe, 350 w/ Edelbrock Performer RPM heads, cam, intake, 700R4, Dave's small body HEI
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