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Converting 2.4 to 3.1. What do I have to replace? 200 1990

posted by  David Samuels on  Sat Nov 27 04:10 CST 2010
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last visit: Mon Oct 20 12:23 CST 2014
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The 3.1 stick cars were always a curiosity to me until I bought one. Prior to that I've owned both 2.2 and 2.4 M47 cars. My experience is that the 3.1 returns better mileage. Best I've been able to obtain in mostly-steady-state cruise with an M47 2.4 car is 28.25 over a six month test period. 88 LH2.2 M47 did 29. However the 3.1 car delivers a rock solid and very reliable 29.5 and I have seen 30 through Nebraska/Kansas terrain.

Not that .5 to 1 mpg is so significant. For performance, the LH2.2/M47 seems best. I have an A cam in a 3.1/M47 car and it will still do 29mpg in cruise mode.

Based mostly on John's twin cam swap (over which I drool every time I see a picture) I'm working on a twin cam swap for my wagon. Just "cuz", I'm seriously considering trying to get the 3.1 to run on that project.

DS






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