1957 Split case transmission gearing?

[jz56oval]

Hi all

I just installed my first split case tranny with my first 36hp in my 56 oval. I tried to mate a 1963 tranny with the 36hp but 4th was to tall.

I was told the split case tranny is the way to go. Now it seems the split case has a taller 2nd gear then the 63 tranny. Is this true? It takes longer for the rpms to raise when shifted into 2nd. But felt ok when the 63 tranny was installed.

So are the 2nd and 3rd gears taller in the split case then the 63 tranny?

I was able to take off quicker in 2nd when I had the 63 tranny.

Thanks for any info or help

[EVfun]

The '63 transaxle, provided it was from a Bug, has lower gears in all 4 gears. You are now about 8% taller in 2nd and about 7% taller in 4th. The split case has a slightly lower final drive ratio, 4.43 instead of 4.38, but is taller in all 4 gears. Stuffing the 40 horse Bug box in front of a 36 horse in an otherwise vintage ride is not uncommon.

Most split case boxes are 3.60, 1.88, 1.22, 0.82, first through fourth.
The 40 horse Bug box is 3.80, 2.06, 1.32, 0.89, first through fourth.
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[jz56oval]

[jz56oval]

I've heard that there is a one year only trans with better gearing, 1961 is what I was told.

Anyone know the gearing of the 1961 tranny for a bug?

[Kjell Roar]

[jz56oval]

Thanks for the help and info.

I do believe the 63 tranny was original and not modified. Came out of a stock 63. It shifted pretty easily and nicely