67_FASTBACK

I have a 2 valve intake on my carburator and I was wondering if I can install a 4 valve because the 4's have more hp.
Thnx.

67_FASTBACK

Ha. I just posted about this too. I was wondering the same thing about my 289. To put on a 4 valve carb, you have to put on a 4 valve intake manifold first.

65_2plus2

I agree with the second 67_FASTBACK, or is that the first one? Are you talking to your self 67_FB?

On another note, the "V" in 2V or 4V means the number of Venturi's in the carb, not valves. It's the little round thing in the middle of each barrel.

Cheers [sm=icon_guiness.gif]

TBIAgent69

You technically can install a 2 barrel carb on a 4 barrel intake, but unless you were pushing a higher cfm carb I doubt it would do much. It's a step in the right direction if you're planning on changing to a 4 barrel later.

Soaring

Ain't no valves in a carb. Just venturi. It makes no sense to put on a 4v carb without first putting on an intake designed for a 4v carb. And, if you are going to go through the trouble of adding a 4v carb, you may as well put on a better intake manifold than a stock one. That is where you get your HP from, not from the 4v carb.

65_2plus2

I beg your pardon Soaring, but there is a power valve in performance carbs such as Holley’s and Barry Grant Demon series. Don’t know about the Ford stock crap or Edelbrock carbs[:'(], so don't be too hasty in saying there ain't no valves in a carb.

Cheers [sm=icon_cheers.gif]

Soaring

Hey, that Motorcraft (Autolite) 4100 carb is a tough carb to beat. And, it ain't got no valves.

73Cleveland

The Motorcraft (Autolite) 4300 carb is a tough carb to beat as well!

Soaring

True Dat. I know there are a lot of performance carbs out there that are tough to beat for performance machines, but it sounds as if the original poster doesn't have a performance engine. I would stick with what is tried and true before venturing off with aftermarket carbs for a stock engine.