TheSamba.com :: View topic

Sat Jan 21, 2012 2:52 pm

I have a 1966 Ghia, just read code on side of gearbox....it reads

48
133 301 103
H

any ideas?? would like to know the ratios of the gears. Thanks for any help.

Sat Jan 21, 2012 3:48 pm

Those are the numbers of the empty trans case. What's inside, could be anything.
Read the number stamped into the case about 1" below where you found the part number.

Sat Jan 21, 2012 7:01 pm

Not sure what's inside, but a stock 66 trans came with the following gears: 3.80 first, 2.06 second, 1.32 third, .89 fourth, and 4.375 ring and pinion.

Sun Jan 22, 2012 10:19 am

thanks guys, AB code

Tue Jan 24, 2012 2:05 pm

Got a chance of getting a AO code gearbox, it has a 4.125 final drive as opposed to AB 4.375 that is fitted. Does anyone have experience with this ratio? Cheers

Tue Jan 24, 2012 2:21 pm

ghi66 wrote: Got a chance of getting a AO code gearbox, it has a 4.125 final drive as opposed to AB 4.375 that is fitted. Does anyone have experience with this ratio? Cheers
IMO, 4.125 is the best all around ring and pinion ratio for off-the-line acceleration and highway cruising. (3.875 is better for highway cruising, but you lose some of the off-the-line gearing.) 4.125 R&P came stock on ghias from 1967-1970 model years. With stock height (25.4 inch tall, 165/80R15) tires, your engine rpm will be approximately 20 mph per 1,000 rpm, i.e., 3,000 rpm at 60 mph or 3,100 rpm at 100 kph (62 mph).

Tue Jan 24, 2012 2:51 pm

Ok, thanks for that, much appreciated. I forgot to mention i've rebuilt engine to 1641/twin webers.

Wed Jan 25, 2012 12:32 am

ghi66 wrote: Got a chance of getting a AO code gearbox,
When you look at the code, check it carefully. Most AO gearboxes are actually A0.

Wed Jan 25, 2012 4:14 am

Bruce wrote: ghi66 wrote: Got a chance of getting a AO code gearbox,
When you look at the code, check it carefully. Most AO gearboxes are actually A0.

What would a A0 gearbox be, not heard of that one? cheers

Thu Jan 26, 2012 4:18 pm

ghi66 wrote: Bruce wrote: ghi66 wrote: Got a chance of getting a AO code gearbox,
When you look at the code, check it carefully. Most AO gearboxes are actually A0.

What would a A0 gearbox be, not heard of that one? cheers

or full of hot air?????