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itstom · 10-19-2011, 12:16 PM

Why would running multiple carbs be such a bad thing on a stock engine? With the correct jets the AF ratio is the same whether its a 3x2, 2x2, or single carb., right? More carbs means each venturi will see less CFM but why would the ratio change?

I'm running 2 97's (.044 jets) on a Edmonds intake on a stock 221ci motor in my 41 coupe. Also Fenton headers. In town I get about 13.5 MPG. If it's mostly highway I've seen 16.5-17 MPG. I doubt if I put enough raw gas through it to washing oil off of cylinder walls with those numbers.

Oh, and before you ask; the speedometer was rebuilt this summer, calibrated and has been GPS verified. 3.78 rear end.

Tom

10-19-2011, 12:16 PM	#13
itstom Member Join Date: Jun 2010 Posts: 65	Re: NOS Navarro heads Why would running multiple carbs be such a bad thing on a stock engine? With the correct jets the AF ratio is the same whether its a 3x2, 2x2, or single carb., right? More carbs means each venturi will see less CFM but why would the ratio change? I'm running 2 97's (.044 jets) on a Edmonds intake on a stock 221ci motor in my 41 coupe. Also Fenton headers. In town I get about 13.5 MPG. If it's mostly highway I've seen 16.5-17 MPG. I doubt if I put enough raw gas through it to washing oil off of cylinder walls with those numbers. Oh, and before you ask; the speedometer was rebuilt this summer, calibrated and has been GPS verified. 3.78 rear end. Tom Last edited by itstom; 10-19-2011 at 12:32 PM.