Supercharged daily driver's......
05-27-2005, 09:50 PM
#22
12 Second Truck Club
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Originally Posted by jmproductions
Seems like a lot of confusing stuff here. I went from 3.73's to 4.10's and the truck accelerates faster, period. You will not lose top end power. Maybe some top speed if you have enough engine to tach out OD, but you guys shouldn't be trying to go that fast anyway, these are trucks.. HE HE. Some people think that they have lost power because their truck won't downshift into 2nd anymore at a certain speed. Yes, it will lower your shiftpoints but you will reach your powerband faster and more often getting to the same mph with lower gears. The result is lower ET. Now all that being said if I had an automatic and I drove the truck daily I would stick with the 3.73.
I'm currious how fast you would have to be going to top out O/D with 4.10's on the average 2wd tire?
At lets say the stock red line 6000 RPM?
05-27-2005, 11:07 PM
#23
TECH Veteran
Originally Posted by jmproductions
Seems like a lot of confusing stuff here. I went from 3.73's to 4.10's and the truck accelerates faster, period. You will not lose top end power. Maybe some top speed if you have enough engine to tach out OD, but you guys shouldn't be trying to go that fast anyway, these are trucks.. HE HE. Some people think that they have lost power because their truck won't downshift into 2nd anymore at a certain speed. Yes, it will lower your shiftpoints but you will reach your powerband faster and more often getting to the same mph with lower gears. The result is lower ET. Now all that being said if I had an automatic and I drove the truck daily I would stick with the 3.73.
), and cruising RPM's at TCC lockup much more in line with the desires of my ears, foot, and wallet.What some people don't realize is that numerically higher gears have a less effective range. Sure, they get you off the line more quickly, but you shift sooner, because you run out of gear sooner. So those same gears that get you off the line quickly, run out of steam once you are moving.
I experienced a real-world loss of freeway torque and HP when I switched to 4.10's, and it was significant. This had nothing to do with my shift points, it had to do with having less gear to work with once I was up to speed. Talk to guys with 3.42's....they might lose off the line, but ask them who owns the freeways...
05-28-2005, 12:27 AM
#30
Originally Posted by BlownChevy
I have 20's but the overall diameter is the same as stock.
