1700 XFlow gearbox and differential selection

[Eduardo Benech]

Hi you all. I have a 1700 XFlow (Specialized Engines) with a modified Weber 32/36 to 34/34 chokes and simultaneous opening throttles

I am planning to install a T9 5 speed gearbox (Sierra) and a 4:44 LSD. I wonder if this selection is correct. I will us it only in Track Day races.

Please let me have your kind advices.

Thanks and regards

Eduardo

[fatboy slim]

what diameter are your tyres, if box has std ratios and you are using something like a 185/60 tyre your 1st gear will be about 25mph @ 7k and your theoretical top end about 120mph @ 7k if your motor will pull the gearing {which i would doubt}. only by trial and error do you gain personal experience

[Eduardo Benech]

Thank you fatboy slim for your reply. My tyres are 175/70/13. I will use 1st gear just to move the car, then 2nd and so on. I am planning not to go more than 6K or so. My dizzy cut is at 6.5K. So, once I started the race, I will have a 3 gear MK2. Yes, on slow turns I will use 3rd. on faster 4th, and my top gear will 5th. I love the way my car pull with a 4:44 diff !!

What do you think about ??

Cheers

Eduardo

[fatboy slim]

Start saving for a straight cut kit and put a 5.1 or 5.3 in it and you'll love it even more, although you'll be considerably poorer��

[Eduardo Benech]

Start saving for a straight cut kit and put a 5.1 or 5.3 in it and you'll love it even more, although you'll be considerably poorer��

Thanks again fatboy slim. Why I am going to be poorer ? Anyway, the track I normally have Track Days, even I have never tried 5.1 or 5.3, its fine with a 4:44, cause i reach my braking point in the straight at about 6K, and that's pretty fast !!

Oh well, also I want to keep my XFlow on the safe side LOL

Thanks for your kind help mate

Cheers.