Originally Posted by Isfahan 
Can someone edumcate me on this. I put a B15 trans in my B13 and I love the first few gears, the result of those gear ratios. Now 5th gear in the B15 trans is lower at .733 than the B13 trans (.756) but the final drive is shorter in the B15 (4.437 vs 4.176). In 5th gear, how big of a difference is there between the B15 and B13 trannies rpm-wise?
Oh, and thanks for posting the info!
B15 tranny is 64.32mph at 3k rpm in 5th
b13 tranny is 68.34mph at 3k rpm in 5th
Be the first to like this post.
Back to top
