Changing Gears

[JBCOBRA]

....so you may as well start off in second gear.
With the TKO 500 first gear is almost useless with 3.73 rear gears

[mpanten]

Originally Posted by JBCOBRA

....so you may as well start off in second gear.
With the TKO 500 first gear is almost useless with 3.73 rear gears

40 Mph with 4.10's at 6500 seems good to me. How is over 40mph in 1st useless?

[rgnbull1227]

Im trying to figure out the same thing. These numbers seem fine to me.

[cobra 53]

An other help to make a resolution.

http://www.5speedtransmission.com/calculators.html

Read the sections:

- Startingline Ratio
- Calculate the distance travelled in 1st gear

Rico

[JBCOBRA]

You are just not getting the concept....
Traction is Totally useless....
Maybe you guys use your cars for Parades or something?

Originally Posted by mpanten

40 Mph with 4.10's at 6500 seems good to me. How is over 40mph in 1st useless?

[mpanten]

Originally Posted by JBCOBRA

You are just not getting the concept....
Traction is Totally useless....
Maybe you guys use your cars for Parades or something?

Parade car? No. I get what you are saying I just know for a fact that your wrong. I run drag radials and have no problems hooking up. Get rid of the BFG or Eagle Gt's and join the word of useable horsepower.

[SPF1061]

4:10s will be beyond useless IMHO. Run all the gear calculators you want.
They will predict your cruising speed/rpm with some accuracy. They cannot predict traction, or in this case, lack thereof. There is not a street legal tire made that will come close to gripping in first or second in a 500+hp / 2400lb / IRS / 4:10 geared car. I am running an SPF with Roush 427R, 3:27 gears with Torsen positraction, TKO600, Avons on the street and BFG drag radials at the strip (only because they are cheaper than Avons-they don't grip any better). I can smoke the tires off the car at anything over a 2000 rpm roll in first gear. You will not be able to touch the accelerator in first without instantly hitting the rev limiter. Sounds like fun. If anybody is telling you otherwise they are giving you BAD information.

[SPF1061]

RGNBull 1227 -
Looking back over the posts I don't see where you said or anyone asked - what engine are you running? Maybe it's there and I missed it? Just curious. If you are running a bone stock 351 or less, perhaps moving towards lower gearing would give you some advantage, though 4:10 seems excessive even at that.