3.31 to 3.00 gears

65shlbycln · Jun 7, 2004

How much faster will the car be at cruising speed on the freeway going form 3.31 to 3.00 gears? I understand its a little vague. But any ideas? 5mph? 10mph? 15mph?

1969mach1351 · Jun 7, 2004

For the same RPM at 70 MPH as your 3.31 gear you will be up 7.2 MPH at the same RPM with the 3.0 gear. Where'd you get a 3.31 gear? That's not a stock ratio.

bnickel · Jun 7, 2004

at cruising speed the car will be going the same speed, you will be turning a little less rpm with the 3.00 gears, maybe 150-200 rpm less than the 3.31 with the same size tire

brianj5600 · Jun 7, 2004

It will be about 10%.

65fastback2+2 · Jun 7, 2004

With the 3.31's at 70 ur running about 3011 RPM, with the 3.00's you'll run about 2729 RPM (using 70mph for cruise speed)

STSFCTN67 · Jun 8, 2004

65fastback2+2 said:
With the 3.31's at 70 ur running about 3011 RPM, with the 3.00's you'll run about 2729 RPM (using 70mph for cruise speed)

That is what I experienced when I went from 3.00s to 3.27 gears. Unfortunatly 1st gear is far too quick now and in the Winter I need to take off in 2nd gear.

Max Power · Jun 8, 2004

Use this:

http://www.drivetrainsuperstores.com/calculate.asp

blown65 · Jun 8, 2004

Ya, I'm tired of my 3.89s in my car. Prob will be going to 3.00 also. Was fine with a N/A engine, but now with all this TQ I definitly dont need 3.89s.

STSFCTN67 · Jun 8, 2004

blown65 said:
Ya, I'm tired of my 3.89s in my car. Prob will be going to 3.00 also. Was fine with a N/A engine, but now with all this TQ I definitly dont need 3.89s.

Let me know if you want to take the 3.00s trac loc off my hands.

blown65 · Jun 8, 2004

STSFCTN67 said:
Let me know if you want to take the 3.00s trac loc off my hands.

8" or 9"??

65fastback2+2 · Jun 9, 2004

blown65 said:
8" or 9"??

look at his sig......

"3.00 8inch posi 4sale "

btw, how much u wantin for it??? ive got an open 3.00 but a posi would be nice

blown65 · Jun 9, 2004

65fastback2+2 said:
look at his sig......

"3.00 8inch posi 4sale "

btw, how much u wantin for it??? ive got an open 3.00 but a posi would be nice

lol didnt notice that.

3.31 to 3.00 gears

65shlbycln

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