I am buying a new carb and was wondering if I need to get one with an electric choke or not? The car is only a weekend warrior, and it never really gets that cold where I live. Would there be any disadvantages to not having a choke?
Well you could get by without one but, why? Unless you are interested in every bit of power I suggest you opt for ease and good driveability. Even in California it does get cold at night and in the winter.
Redrum (or Mike)
68 Corvette - 383 CI 427 HP
69 SS Chevelle being updated to Pro-Touring
Pumping the gas puts raw gas in to the cyl and washes the oil off the walls.With a choke you get a rich mixture instead of raw fuel.Run a choke and set it on the light side,it also give you a fast idle for warm up...FRED
I would recomend just taking the choke off, I just did it to my 71'. I made my edelbrock 600 cfm. Into a 645. All I have to do is just hold the gas a little bit at start up and then give it a little gas to keep it going. And I have no problems at all after that. You may have to play with your idle screw a little bit. And that's all I have to do.
I have never bothered with a choke on a weekend warrior. As I see it you will only need it when you initially start the car for an outing, and it only takes a few moments for it to run well so I don't really think it is necessary. It just boils down to what you want, something that runs well as soon as you turn the key or something that will take a few moments to do so.
I did notice that if you buy a non choke carb (edelbrock) that the jets are bigger than if you buy one with a choke. For instance on a edel-600 cfm no choke, the carb has Metering Jets: primary .100, secondary .095; Metering rods: .070x.047 ; spring orange 5hg.
On the 600 cfm with electric choke, it has Metering Jets: primary .098, secondary .095; Metering Rods: .075x.047; spring yellow 4hg.
Why would they do that? Does this make a difference in which carb to buy?
Thanks again for your help
Alright Jerry, I'll rephrase....they arent TOTALLY unnecessary, but I would call them one of those convinient features that isnt a necessity. Like A/C. By the way, thanks for your help with my PCV question.
You guys make me laugh. Sure for a daily OK, but for a perf vehicle
" YOU DONT NEED NO STINKIN' CHOKE" . I dont bother. The only key is NOT to pump the thing and goose it while its running. Fire it, run it up to 1500/2000 rpm and let it stay there W/O pumping it. But I run Holley 850s and tripowers. Guess if I was putting an EDEL 600 on something for my wife, I run one.
Gold Member 62/ACES 3110 67 SS 427
"Be big. Be a builder."
on my 454 daily driver (not stock) i use a holley 950hp carb they dont' come with a choke/vac. lines, NADA, they are clean, and in texas it does get cold in winter, 2 pumps, fires on first revolution, then just feather for a couple seconds. no wires/no cables nada, clean as a wissle under my hood,
and from what i've heard most holley's run rich anway and there's really no need for a choke. my car came with a 750holley originaly with the choke cut off, from Minnesota, no problem
Oh yeah, I should add two more "points of info",; 1.) I live in Buffalo where its really tropical, but have fired the old girl at less than 30 degrees. No prob and 2.)more importantly, I am also a freak that doesn't take my gearbox out of neutral until I see the temp guage begin to move.
Its a litle bit of a hassle, but no big shakes.....
I'm with 427L88. I have a 750 double pumper in my 85 El Camino and live in Ohio. It's my daily driver and I have no problems starting it when its below 30 out. Just gotta keep it around 1500-2000rpm for awhile till it'll idle. Then I just wait till the temp. moves and I'm gone.
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