rpm

[philly101]

When goin 45my rpm reads 2k could I have is that right for stock gears

 

[chrisv_10]

What about 70?? I'm around 3200 at 70 with 3.73s

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[philly101]

That I'm not sure of since my speedo not work n

 

[97FloridaGT]

Now I'm confused..... Buy the speedo gear kit from American muscle and get a true reading.

 

[Mustanger]

plug in a GPS & see what speed you are going to check your speedo...

 

[chrisv_10]

Do you have a smart phone download gps speedometer or GPS hud and it will tell you your MPH.

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[philly101]

Lol I got it to day its a lil over 3 goin 75

 

[philly101]

I have a 99t45 an my cars a 96 when you need a trans for sell for 100$ you get it lol

 

[chrisv_10]

Probably 3.73s then

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[justinschmidt1]

Idk where you get your info but its horribly wrong.

What about 70?? I'm around 3200 at 70 with 3.73s

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With a 25.7 inch tall tire (stock height) .67 5th gear (t45 5th gear) and 3.73 rear end you should be at ~2300 rpm at 70 mph.

Im not sure what you got going on cause theres absolutely no way you are anywhere near 3200 rpms at 70mph with 3.73s in top gear.

Lol I got it to day its a lil over 3 goin 75

The only way you should be a little over 3k at 75 is if you have 4.56s in the rear end.

Probably 3.73s then

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Again, No...horribly wrong.


You can put your own info in here if you'd like: http://www.apexgarage.com/tech/gear_ratios.shtml

 

[Musturd]

Justin's right 2vs don't rev worth a shit with 3.73's on the highway . In 5th it's awesome even my 5.0 is at 2500 @70

 

[chrisv_10]

Damn them maybe I got 4.56s. I'm just taking a guess. The car came with them and the previous owner didn't know shit about the car. Lol

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[chrisv_10]

I will check the rpm once I get my car running.

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[justinschmidt1]

Damn them maybe I got 4.56s. I'm just taking a guess. The car came with them and the previous owner didn't know shit about the car. Lol

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Even with 4.56s and a stock tire you should be below 3k at 70...I think you would be right at 3k at 75 mph according to this calculator

 

[philly101]

Not sure Wha size tire I have but I kno I have 315 35 17 on the rear

 

[justinschmidt1]

Not sure Wha size tire I have but I kno I have 315 35 17 on the rear

Theyre Stock height...25.7

 

[Mnstrstang]

Jack the rear of the car up, mark the driveshaft, spin the tire one revolution by hand and count how many times your driveshaft spins. Much easier than guessing.

 

[philly101]

Ok Coo I will have to try this on sat

 

[philly101]

How many time makes it a 373 or 410

 

[philly101]

Theyre Stock height...25.7

Wow I just read Wha I posted lol