warming up carburated vehicle

[gold84gmc]

how long should it take to warm up and be able to drive a car with a carb without having drivability issues?

[Lt.Del]

drivability issues?

There should be no issues as soon as your engine is running.   I don't warm up my truck, just start 'er up and put it in gear.
But, to run it to where the exhaust isn't routed through the intake and choke opens up, i'd say about 5 minutes.

[gold84gmc]

ok, cuz i usually have to warm it up like 4-10 mins. cuz i floor the gas once before i start it. then it runs for a couple of mins, then it sounds like it wants to stall so i step on the gas like twice and then hold the gas at a certain position for like another 5 mins. then it runs ok.

[VileZambonie]

Basically you should only have to depress the throttle 1/2 way and then crank the engine. the choke should close and put itself on the fast idle cam. The choke break will allow it to jump off of fast idle.

[stevens]

I used to have to warm mine up for about 10min and i live in texas. How old is your carburater? Mine was a peice of crap and had to hold it about half way for a few mins








78 chevy big ten 350/350

[gold84gmc]

its like 2 or 3 months old maybe?

[zieg85]

something is not 100% on it then.  My 85 chugs a little but I know I need a choke pull off.  My 86 305 4bbl takes right off after I hit the key, no hesitation or anything.  I don't even have the fast idle cam adjusted.  Best running one out of the bunch. 

[gold84gmc]

yea it kinda seems that way...i havnt really adjusted from the way it came out of the box....but i also heard the early engines like 1970' and 60's only lasted about 100k miles before needing to be rebuilt, etc....my car has about 83000 and i dont know if it makes a difference but before i first got it, it had been sitting and not run for like 3 years...but it started right up after.

[zieg85]

Gas and oil has improved thus engine life is 2-3 times what it was.  Carbs need to be rebuilt from time to time and just like anything you get what you pay for.  A quality rebuild should be just like a brand new one.  I have a guy I have known for years do mine.  He has a busy shop and it takes him a while to get it done but it is right and looks like new.

[DirtyLittleSecret]

The stepfather's 78' truck (now ours) had 248k miles on the original motor with no rebuilds.  Maintenance, maintenance, maintenance.  Pay attention to your carb, and SBC's will take care of ya.
The new GM motor takes one pump, and 1/4 choke...nothin' else.