Thanks Alex, I'm on it!

 

I didn't read the whole topic section but I take it you guys are talking gearing. To put this all in a nutshell (if that's possible) when changing gears (rear end gears) for those looking for optimum 1/4 mile times and speeds (mph) you have to gear you particular combo so that you go through the traps( end of quarter) just over peak HP rpm about (300rpm over) that could also be put as just over your shift point in some cases, in your 1.0:1 ratio in the trans that means 3rd gear for you 700R4/4l60e owners and 4th gear for all you 6 speed owners. If you plan on making changes slowly then you have to decide on when and how many times you wanna go back into the rear. Don't forget for you auto guys to add the convertor factor, this might exclude you guys locking up the convertor during a WOT run. The or a decent torque convertor always adds slippage but should n't slip that much usually a 300rpm diff is possible on a very efficient convertor and that equates to about .2:1 more multiplication, which means a 3.54:1 final drive combined with a say the more common 2800-3000 stall convertor is gonna be more like 3.74:1 because of the added multiplication. Figure out your HP and peak rpm and then you'll be able to determine what gear is best for you. I'll post some formulas that should be helpful. Don't forget traction is the key to better time slips once you make these modifications and also keep in mind when doing the math that the math never fails. An important upgrade that some 6-speed owners may or may not know is trans ratios, I believe it was 93 f-bodies and maybe some after that, I'm not sure if vettes ever came with them and I know vipers have them, these have what I call a real close ratio 6-speed I forgot what the first three ratios are but I know they're real close and would do wonders for your acceleration the 3 final ratios are 1.0:1 .80:1 and .67:1. These gear ratios combined with a 26" tire and 3.73's shifting @ 6000rpm would give you 124mph in 4th 155mph in 5th and 185mph in 6th with great acceleration all the way up! Good Luck guys! Just my $.50

rpm x tire diam / gear ratio + .2:1 (for converter)x 336
:thumbs:


[Modified by JUAN J SANCHEZ, 4:06 AM 10/13/2003]

 

has any one had experience with http://www.drivetrainsuperstores.com ?
They have 3.31 gears for around 150.00 i might order from them

 

If I'm reading it correctly, I don't think that they'll work for you as you have the 2 series rear...

"RING & PINION 3.31 RATIO - STANDARD THICKNESS GEARSET - Fits cases that do not have 2.73 or numerically lower gears"
http://www.drivetrainsuperstores.com...il.asp?id=3985

EDIT: On second thought, maybe I've got that completely backward. I could never keep that "numerically higher/lower" thing straight... :confused:


[Modified by tobijohn, 10:02 PM 10/13/2003]

 

EDIT: On second thought, maybe I've got that completely backward. I could never keep that "numerically higher/lower" thing straight... :confused:


[Modified by tobijohn, 10:02 PM 10/13/2003][/QUOTE]

Thats what im thinking, im not sure what that means