95 Chevrolet K1500 5.7 TBI to Carb Swap

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badco

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Schurkey said:
I don't doubt this. I've heard similar testimony from other Holley users who don't have chokes, and the engine is claimed to start and run good when "cold".

Many Holley carbs are PIG RICH at idle and low speed, and of course they've got plenty of accelerator pump-shot too.

Of course, these same folks don't define how cold "cold" is. Show up here in January with your no-choke Holley, and see how well it starts in the morning. I have--on rare occasion--seen carbureted cars parked outside, no engine heater (block heater, tank heater, etc.) fire and run at -40. Betcherass they had chokes. By comparison, starting and running at -20 is not such a big deal. In fact, it was pretty routine.
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The outter four holes on the air bleeds are the idle ones. Use a small bit turner and drill them to .075 in front outter two only if its a vacuum secondary and it will quit being so rich at idle.
 
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