Quote:
Originally Posted by BRUTAL64
Ok, with my 3:55s I hit 119 in third gear. That's with a 27.9 (P275 15 60) inch on the 3,000 pound vette. So.......................I don't see how your math is right. Math and the real world don't always jive. Just not sure about it is all.  |
The weight is irrelevant, what was your rpm at 119rpm? Your math might be fine. Mine rocks.
Here's a nice accurate graph of a wide ratio top loader, 3.55 gears and 275/50x15 tires. The engine turns the trans turns the axle (not a lop of slop there) turns the tires. Pressure and rotational inertia can have some effect on "real" diameter and effect total final "gearing", but the margin of error would be a couple mph at most I would think.
