KB 9lb w/automatic

killbee

Founding Member

Jul 30, 2000

96

0

7

Western NC

Jul 24, 2004

#1

• Jul 24, 2004

• #1

Anyone running the KB with an automatic GT? What rear end gear are you running? I'm getting ready to change my gear to a 4:10 but I'm worried this may be too steep for the KB when I install it in a few months.

 

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prsrizdgt

New Member

Mar 12, 2004

231

0

0

St. Louis

Jul 24, 2004

#2

• Jul 24, 2004

• #2

I am running a 9lb Eaton blower so you will be pumping even more HP and Torque. My 3.73's are PLENTY.

 

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prsrizdgt

New Member

Mar 12, 2004

231

0

0

St. Louis

Jul 24, 2004

#3

• Jul 24, 2004

• #3

BTW, with 3.73's my 3rd gear trap rpm is between 5800 - 5900

 

smokin'Red35th

Member

Jan 9, 2004

493

0

16

Las Vegas, NV

Jul 24, 2004

#4

• Jul 24, 2004

• #4

kenne bell suggests 3.73s as the best gear to go with. Im debating the same thing, but i already have the 4.10s so im just gonna put them in and when i get my supercharger later on, if its too much ill just change em out.

 

killbee

Founding Member

Jul 30, 2000

96

0

7

Western NC

Jul 25, 2004

#5

• Jul 25, 2004

• #5

anyone else????????

 

WRXracer

New Member

Feb 28, 2003

825

0

0

Jul 25, 2004

#6

• Jul 25, 2004

• #6

ok

since I dont go to the track much and dont care about my trap times.. id run 410s and a kenne bell on a auto..

 

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el_kid_1

New Member

Oct 30, 2003

738

0

0

Puerto Rico

Jul 25, 2004

#7

• Jul 25, 2004

• #7

I honestly think 4:10 with a KB will be too much of kick. I'd see and advantage if you had a centrifugal supercharger...the 4:10 would allow you to rev your engine much quicker and hence build boost more quicker. With the KB twin screw you don't nee to rev the engine that much to see full boost. The twin screw are positive displacement superchargers and build the same boost at any rpm over 2000. I have 3:73 gears with my set up and it more than enough kick. Just my .02.

 

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SilVert99GT

New Member

Mar 15, 2003

75

0

0

Jul 25, 2004

#8

• Jul 25, 2004

• #8

smokin'Red35th said:

kenne bell suggests 3.73s as the best gear to go with. Im debating the same thing, but i already have the 4.10s so im just gonna put them in and when i get my supercharger later on, if its too much ill just change em out.

Click to expand...

Where did they make this suggestion? Their web site says "Lower gears not necessary". I wouldn't mind throwin in some 3.73's to help my heavy automatic vert but I've only hesitated because I plan on getting their 9PSI kit

 

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tooblue02

New Member

May 10, 2004

86

0

0

Groton Connecticut

Jul 25, 2004

#9

• Jul 25, 2004

• #9

I had 4.10's and I had to switch, they were just to much for the street, and I was out of gear at about the 1000' mark with them. The 3.55's are just fine for a 5-speed, thats what ken christy reccomended to me. I think an auto would be fine with 3.73's

 

smokin'Red35th

Member

Jan 9, 2004

493

0

16

Las Vegas, NV

Jul 25, 2004

#10

• Jul 25, 2004

• #10

SilVert99GT said:

Where did they make this suggestion? Their web site says "Lower gears not necessary". I wouldn't mind throwin in some 3.73's to help my heavy automatic vert but I've only hesitated because I plan on getting their 9PSI kit

Click to expand...

3.73s are the reccomended gear for 1/4mile TRACK times.
Scroll down to "Gears" on page 7
Kenne bell 2V tech tips

 

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SilVert99GT

New Member

Mar 15, 2003

75

0

0

Jul 25, 2004

#11

• Jul 25, 2004

• #11

smokin'Red35th said:

3.73s are the reccomended gear for 1/4mile TRACK times.
Scroll down to "Gears" on page 7
Kenne bell 2V tech tips

Click to expand...

Hey thanks for the link! I love the way they scientifically and dispassionately lay out the pros and cons of each mod. I remember being frustrated at the delays in the relase of the 4.6 kit years back. But the more I read the more I appreciate it and realize it was worth the wait.