car goes low 12's should be faster

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snoboardcore

New Member

Mar 30, 2005

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New Hampshire

Oct 10, 2006

#21

• Oct 10, 2006

• #21

the car has 3.55's in it right now and yes it is a five speed. so my scanner is broken tmoss to post the dyno sheets

 

R

R/S 8027

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Mar 25, 2002

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Chicago, IL

Oct 10, 2006

#22

• Oct 10, 2006

• #22

improving your 60ft times

Call Mark or Matt at Racecraft 708-293-1885. They will take care of your 60ft problems. Trust me on this they are the best quality.

 

EMW150

Founding Member

May 22, 2000

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46

Roaring Spring,PA

Oct 11, 2006

#23

• Oct 11, 2006

• #23

4:10s should put you where you need to be as far as rpms. Then you can concentrate on getting the 60's down.

 

G

GTOreturns

Well-Known Member

Oct 1, 2003

51

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59

West Coast Best Coast

Oct 11, 2006

#24

• Oct 11, 2006

• #24

snoboardcore said:

the car has 3.55's in it right now and yes it is a five speed. so my scanner is broken tmoss to post the dyno sheets

Click to expand...

355's are "not" a bad gear for a 5spd. I would leave it alone for now. You should be crossing the line above 5000rpm.

 

EMW150

Founding Member

May 22, 2000

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Roaring Spring,PA

Oct 11, 2006

#25

• Oct 11, 2006

• #25

Really, you need to look at the dyno graph and see how fast and at what rpms the horsepower is falling off. For example if your horsepower on the graph is peaking at 5,800 but is a gradual curve down through 6500, you want to cross at about 6500. If the curve totally falls off at 6000 you want to cross at 6000. This will let the engine pull in it's highest power ranges throughout the 1/4. Your leaving alot on the table if you're crossing at 4200. My combo peaks at about 7,100 but has a nice broad curve that is still making over 400 rwhp at 7,500. To optimize the broad curve, I run a 4:56 and cross at around 7,500.

 

tmoss

Gettin Wired

Founding Member

Jun 28, 2001

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128

Saint Louis, MO

Oct 11, 2006

#26

• Oct 11, 2006

• #26

scan the dyno graph on a friend's machine or something....

 

Brads Coupe

Sweeeeet!!!

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Apr 18, 2000

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Calgary , Alberta, Canada

Oct 11, 2006

#27

• Oct 11, 2006

• #27

Don't feel bad, I'm running 11.85@128mph

But for that mph you should be able to cut a low 11 with a good suspension setup and slicks.

 

Modular2v

Founding Member

Jun 30, 2002

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99

oklahoma

Oct 11, 2006

#28

• Oct 11, 2006

• #28

Brads Coupe said:

Don't feel bad, I'm running 11.85@128mph

But for that mph you should be able to cut a low 11 with a good suspension setup and slicks.

Click to expand...

holy ****!!!!! and i thought my 11.45 at 126 was bad!

 

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snoboardcore

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Mar 30, 2005

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New Hampshire

Oct 19, 2006

#29

• Oct 19, 2006

• #29

Heres the Dyno Sheet

 

Attachments

• dyno-1.webp

  13.6 KB · Views: 125

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snoboardcore

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Mar 30, 2005

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New Hampshire

Oct 21, 2006

#30

• Oct 21, 2006

• #30

That fuel curve was with no FMU and no tuning

 

S

snoboardcore

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Oct 23, 2006

#31

• Oct 23, 2006

• #31

ttt

 

EMW150

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May 22, 2000

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Roaring Spring,PA

Oct 24, 2006

#32

• Oct 24, 2006

• #32

I just don't get it. Your gear should be about right where it is. I ran it on a calculator and 3.55s at 5,800 rpm with a 26" tire is 126.5 mph. I think your power level should easily have you there in the 1/4. Could something have happened or changed since the dyno tune? I don't think you were making that kind of power at the track with that MPH. As far as suspension, yes that will definately help your ET but it's not going to do much for your MPH which is out of whack.

 

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twoturbofox

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Jun 23, 2006

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Oct 24, 2006

#33

• Oct 24, 2006

• #33

It is also a dynojet, so that means its very optimistic. maybe get on a mustang dyno and see where you are at. plus you could also run through the 1/4 on the dyno and get a good idea where you should be. As far as gears, I would think the 3.55s are perfect, maybe a 3.73, but thats pushing it. I crossed the traps with 3.73 at 5800 rpm in 4th, but with a smaller tire. as for suspension, I have a bunch of stuff for sale in the Northeast classifieds, including a good deal on hpm megabite lower arms, eibach drag launch rears springs with airbags, and QA1 10 way adjustable drag struts. let me know

 

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twoturbofox

New Member

Jun 23, 2006

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Oct 24, 2006

#34

• Oct 24, 2006

• #34

plus i have a whole 8.8 with 3.73 gears and an eaton posi, i just noticed you were in NH, i can deliver.