Gearing ?
Yes I do over think but really its not bad to plan a bit.
Really my 2 choices are 2.76 or 3.23 gears. The reason I don't want to go deeper than 3.23 is with my short tires it will rev way to high on the highway.
I know the 3.23 has the advantage out of the hole with 8.50:1 overall 1st gear and even probably quicker overall over the 2.76 even though 3.23 will cross the finish line at 4500 rpm. But the 2.76 will make a great highway gear.
I know 2.76 seems really under geared.
But I consider 3.55 x 2.45 (1st) x .89 (27"tire) = 7.74:1 overall 1st gear the average gearing for most. And if I go with the 2.76 x 2.74 x .96 = 7.26:1 not a huge difference between the two.
I'll start with the 2.76 if it don't work can always swap to 2.96 or 3.23.
Thanks for the input.
There are so many data holes in this thread it is impossible to give You any accurate advice at all. Either You're sticking w/25" dia. rollers or not. What stall converter, what is
the rated efficiency, & where does it actually stall behind the teener? You want a drag set-up, auto-X setup, or street/road course set-up? Right-on w/the previous post about
turning the MPH You're talking, the AAR I did heads for was hittin' 109, worked out roughly 340 at the wheels, He was test shifting as high as 7200 w/that 340. It frankly seems
unlikely(but not impossible) that teener will be anywhere near that, and You stated"100-110 MPH", that's a monumental amount of HP spread Dude!! Like the diff between runs
@13.2 & 12.2 sec., where do You realistically expect to be? O/D is nice, but as has been discussed & I have warned, just because You can cruise at a 2.76-like RPM, doesn't
mean it's safe to go ahead & drive like You're running them. You can easily exceed the prop-shafts critical speed if You hit the highway & get "top happy"!!
