Best Gears for a GT with Plans for SC

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Screaminyellow7

New Member

Jun 13, 2004

63

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Jul 28, 2004

#1

• Jul 28, 2004

• #1

Hey Guys, I'm sure this has been mentioned alot but just curious what the best gears i should get with plans for a supercharger. I thought i heard that 4:10 would be good, but then i also read that you get 4:10 if you're not getting a blower.

 

madmatt

Ellis Juan sympathizer

Founding Member

Dec 28, 2002

465

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16

Lexington, SC

Jul 28, 2004

#2

• Jul 28, 2004

• #2

Well, most people say that with a supercharger, 4.10 is too much gear and that you run outta rpms while racing. Most people suggest staying with some 3.73s if you do the supercharger.

 

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54life

New Member

Jul 24, 2003

392

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Cali currently at Ft. Rucker AL

Jul 28, 2004

#3

• Jul 28, 2004

• #3

I agree 3.73 is key.....

 

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Blivit

Founding Member

Jan 20, 2002

99

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6

Orlando

Jul 28, 2004

#4

• Jul 28, 2004

• #4

I am going to go with 3.73's once I get the money. I have 4.10's right now and I hit the rev limiter in 4th right before I cross the 1/4 mile. Before the sc they were fine, but now I feel they are too much.

 

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Screaminyellow7

New Member

Jun 13, 2004

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Jul 28, 2004

#5

• Jul 28, 2004

• #5

yeah i actually just came by some money, I hit a scratch ticket for 10k. I gt 7k from the lottery. I took care of some things. Now i'm going all out. My buddy got 3:73's and he wasn't too impressed, but he's not running a blower.

 

quiksilver98

New Member

Jan 25, 2003

251

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Orange County So.Cal

Jul 28, 2004

#6

• Jul 28, 2004

• #6

96-98=3.90's 99-04=3.73's ''supercharged gear ratios''

 

damacman

Member

Aug 12, 2003

529

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16

Phoenix, AZ

Jul 28, 2004

#7

• Jul 28, 2004

• #7

Screaminyellow7 said:

yeah i actually just came by some money, I hit a scratch ticket for 10k. I gt 7k from the lottery. I took care of some things. Now i'm going all out. My buddy got 3:73's and he wasn't too impressed, but he's not running a blower.

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Dude, share the love! Rule at StangNet is that all Newbies have to share the wealth in the event they win the lottery . . .

 

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3.8L_of_Pain

New Member

Jul 4, 2004

123

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Southern California -- Orange County

Jul 28, 2004

#8

• Jul 28, 2004

• #8

I would recommend the following:

-- positive displacement blower (Saleen, Kenne-Bell): 3.27 to 3.55
-- centrifugal blower (Vortech, Paxton, ATI): 3.73 to 4.10

due to the fact the positive displacement blowers make constant boost and massive low end and mid range torque. On the other hand, centrifugal blowers, with boost proportional to engine rpm, do not start making a significant impact until about 3000-3500 rpm.

 

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Screaminyellow7

New Member

Jun 13, 2004

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Jul 28, 2004

#9

• Jul 28, 2004

• #9

yeah i knew i would some reply's like that. Well we have a rule at my work where i bought the ticket, who ever your working with when you hit big you take care of them.

 

madmatt

Ellis Juan sympathizer

Founding Member

Dec 28, 2002

465

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16

Lexington, SC

Jul 28, 2004

#10

• Jul 28, 2004

• #10

Agreed with above, I forgot to mention the positive displacement blower, but dont even mess with anything but a kenne bell one. Just go kenne bell, mmm 400 ft lbs of torque at 2500 rpm....

 

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Screaminyellow7

New Member

Jun 13, 2004

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Jul 28, 2004

#11

• Jul 28, 2004

• #11

how much to the KB's run? and how much PSI?

 

madmatt

Ellis Juan sympathizer

Founding Member

Dec 28, 2002

465

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16

Lexington, SC

Jul 28, 2004

#12

• Jul 28, 2004

• #12

Screaminyellow7 said:

how much to the KB's run? and how much PSI?

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base it is about 4800 for the intercooled, 9psi kit. Thats what most run and it gives some good, safe numbers.