TKO 500 VS. TKO 600 (Street) 5sp Comparison

 

Rear End Ratios:

Generally speaking, Lightweight vehicles with High Rear end ratios of 3.55-4.11 gears will run well with the TKO 600 Gearing .


Low Gearing of 3.00 and numerically less will benefit with the TKO 500 with the 1st gear of 3.27.

The TKO 600 has two versions. 

Street cars - the overall preferred transmission is the 5th gear with a .64 od. which provides a 36% overdrive reduction.

Track cars - preferred transmission is the  TKO 600 with a 2.87 first and a .82 od. no gap between 4th and 5th gear

 

Gear Comparison:

 

1st

2nd

3rd

4th

5th

Rev

TKO-600

2.87

1.89

1.28

1.00

0.64

3.00

TKO-500

3.27

1.98

1.34

1.00

0.68

3.00

 

 

 

 

 

 

 

 

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The TREMEC is a true overdrive transmission, with a 5th gear ratio lower than 1.00. 

How will the 5th gear ratio work with my rear-end gear?

In general, the TREMEC’s 5th gear ratio of 0.68 or 0.64 will work better with a lower (higher numerically, i.e. a 3.73) rear-end gear.

When referring to “rear-end gear ratio”, one must consider the ring and pinion gear ratios along with the tire height.

Examples:

Tire Height

Rear-end gear

5th gear

RPM at 60mph

TKO-500

31.5

4.33

0.68

1884

TKO-600

31.5

4.33

0.64

1774

 

TKO-500

27.5

3.08

0.68

1535

TKO-600

27.5

3.08

0.64

1446

 

TKO-500

27.5

3.73

0.68

1859

TKO-600

27.5

3.73

0.64

1751

 

TKO-500

27.5

4.11

0.68

2049

TKO-600

27.5

4.11

0.64

1929

.
TKO-500  3.27 First Gear

Tire Height

Rear-end gear

RPM @ 15mph

RPM at 25mph

RPM @ 35mph

  

27.5

3.08

1,847

3,078

4,309

  

27.5

3.73

2,236

3,727

5,218

  

27.5

4.11

2,464

4,107

5,750

  

27.5

4.56

2,734

4,557

6,379

  

 

Now the same info with the TKO-600’s  2.87 first gear:

27.5

3.08

1,621

2,701

3,782

  

27.5

3.73

1,963

3,271

4,580

  

27.5

4.11

2,163

3,605

5,046

  

27.5

4.56

2,399

3,999

5.599

  

 

*Shifter and Shifter Locations:

TREMEC:

The TREMEC 5sp shifter is centered in the tunnel, and the stock rearward position is 19.5” from the bellhousing, and the shifter can be rotated 180* and relocated to 16.75”. 

 

Misc :

 

The TREMEC has a “toploader” shifter, meaning that protrudes out the top.

The TREMEC offers 8 shifter locations on the trans from the factory. 

Tremec transmission have a dry weight of 95 lbs.

 

The information above is collaboration of information from articles and overall consensus from different Drivers.  We do not consider ourselves experts in Transmissions nor guarantee 100% accuracy.

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