240Z, 260Z, 280Z Performance / Technical Discussions related to performance motor enhancements, upgrades.

GAS Mileage with a 4bbl INSIGHT, ANYBODY?????

Old 05-01-2005, 04:29 PM
  #1  
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Join Date: Oct 2004
Location: Woodland, CA
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GAS Mileage with a 4bbl INSIGHT, ANYBODY?????

I am just as sick as everyone else with the rising cost of fuel. I have been contimplating buying a gas saver?????? Or build my 72 Z that i Have stripped at my shop. I plan on putting a four barrel(390cfm?) on it with the possibly a cam.

I have no Idea what these things got stock, I know a lot of guys do the 4bbl route.

What ever data I could get would be great!!!!!!
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Old 05-02-2005, 04:24 PM
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Join Date: Mar 2003
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You could spend $400 on a manifold and carb, never recovering the cost in gas savings. I once had a Chevelle that got 6 mpg. I said it then and I say it now, when it comes to fun FTMPG!
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