Considering going from 3.73 gears to 2.73s. Crazy?
#41
10 Second Club
iTrader: (8)
Re: Considering going from 3.73 gears to 2.73s. Crazy?
We tried this 14 or so years ago. problem is you then put all the friction in the transmission. The TQ has to have a focal point. with the bigger(numerical) gear it becomes the tires and is easier on the reat of the Drive train. With the smaller gear the transmission and TC become the focal point.
Trust me ripping Input shafts out of TH400s is no fun <img src="gr_images/icons/wink.gif" border="0"> We then welded a After market shaft into the drum....and I split it in half <img src="gr_images/icons/wink.gif" border="0">
the KEY for drag racing is to gear and tire for the optimal Terminal RPM. You know how hard the motor is spinning when you cross the line <img src="gr_images/icons/wink.gif" border="0">
So I guess what I am saying is I feel a 3.23 and a good stall is as low as I would go for the street <img src="gr_images/icons/wink.gif" border="0">
On the other side Top Fuel runn's a 3.20 gear(NHRA rule will not let then run any lower)and a very tall tire. this gives them the 320mph runn we all see.....then again they rebuild the clutch EVERY round <img src="gr_images/icons/wink.gif" border="0"> Again that focal point thing.
Good luck all
Trust me ripping Input shafts out of TH400s is no fun <img src="gr_images/icons/wink.gif" border="0"> We then welded a After market shaft into the drum....and I split it in half <img src="gr_images/icons/wink.gif" border="0">
the KEY for drag racing is to gear and tire for the optimal Terminal RPM. You know how hard the motor is spinning when you cross the line <img src="gr_images/icons/wink.gif" border="0">
So I guess what I am saying is I feel a 3.23 and a good stall is as low as I would go for the street <img src="gr_images/icons/wink.gif" border="0">
On the other side Top Fuel runn's a 3.20 gear(NHRA rule will not let then run any lower)and a very tall tire. this gives them the 320mph runn we all see.....then again they rebuild the clutch EVERY round <img src="gr_images/icons/wink.gif" border="0"> Again that focal point thing.
Good luck all
#42
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Re: Considering going from 3.73 gears to 2.73s. Crazy?
Top Fuelers also slip the clutch for up to an 1/8th of a mile, in thier case its spin the clutch or spin the tires. More traction spinning the clutch, cheaper to spin tires.
#43
10 Second Club
iTrader: (8)
Re: Considering going from 3.73 gears to 2.73s. Crazy?
Yes That is true....what do you think you are doing with your convertor <img src="gr_images/icons/wink.gif" border="0">
All I am saying is that I would expect a shorter transmission Life <img src="gr_images/icons/wink.gif" border="0"> They are slipping the clutch...this would slip the TC and put more strain on the transmission. See the Above example of what a small 327 did to many Th400s..some from the best builders in the country. Heck that was just with a modified Crysler 9.5in 2.2 Turbo convertor. Who knows what STR it was LOL Got a solid 4,200 stall out of it <img src="gr_images/icons/wink.gif" border="0">
On second thought it is a great thing! <img src="gr_images/icons/wink.gif" border="0"> <img src="gr_images/icons/wink.gif" border="0">
Been A little slow at the shop <img src="gr_images/icons/wink.gif" border="0"> <img src="gr_images/icons/wink.gif" border="0">
BTW NOTE smiley faces <img src="graemlins/fluffy.gif" border="0" alt="[Fluffy]" />
All I am saying is that I would expect a shorter transmission Life <img src="gr_images/icons/wink.gif" border="0"> They are slipping the clutch...this would slip the TC and put more strain on the transmission. See the Above example of what a small 327 did to many Th400s..some from the best builders in the country. Heck that was just with a modified Crysler 9.5in 2.2 Turbo convertor. Who knows what STR it was LOL Got a solid 4,200 stall out of it <img src="gr_images/icons/wink.gif" border="0">
On second thought it is a great thing! <img src="gr_images/icons/wink.gif" border="0"> <img src="gr_images/icons/wink.gif" border="0">
Been A little slow at the shop <img src="gr_images/icons/wink.gif" border="0"> <img src="gr_images/icons/wink.gif" border="0">
BTW NOTE smiley faces <img src="graemlins/fluffy.gif" border="0" alt="[Fluffy]" />