final drive ratio (3rd)

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Bren67Cuda904

Post subject: final drive ratio (3rd)

PostPosted: Thu Jul 27, 2006 7:00 pm

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Joined: Tue Jun 27, 2006 8:21 am
Posts: 1614
Location: Orlando, FL
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What is the likely 3 rd gear ratio? Is it 1:1? (My car) If unknown what information is needed to know?
Whats the max RPM I should turn a somewhat daily drivers engine? I don't want to kill it over the long haul, but I don't mind some RPMs. I know MPG will go down the higher the RPMs. I travel the highways at about 70 a good portion of the time.

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Jeb

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PostPosted: Thu Jul 27, 2006 7:12 pm

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Turbo EFI

Joined: Sat Jun 19, 2004 8:01 pm
Posts: 1937
Location: Rhine, GA
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With a non overdrive application the final drive is 1.1.

I would go with 3.21 gears if you do any highway driving and do not have an overdrive. 3.55's or lower would be just too dang noisy and it will be a gas hog also. With that long stroke a 225 doesn't like crusing at over 3000 RPM for long periods of time.

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