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RPM Calculator

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Calculate

Gear Ratio
Don't know it?
Calculate it here.

Speed

Tire Height
Don't know it?
Calculate it here.

 

Results

Auto

AOD

Manual

5 Speed

recommended RPM @ 60mph
4 cyl 2200-3200
6 cyl 2000-3000
Big Block 1600-2600
Small Block 1800-2800
Ford 6.0L 1900-2400
Ford Diesel (Non-Turbo) 1600-2500
Ford Diesel (Turbo) 1400-2200
Dodge Diesel 1400-2200
GM Diesel 6.2L 1800-2800
GM Duramax Diesel 1800-2200

Auto = D in an AOD

AOD is calculated at .70 transmission ratio

Manual = 4th in a 5 speed

5 speed is calculated at .80 transmission ratio

Specific Trans Ratio

Calculate

R&P Ratio

Tire Height

Speed

Trans Ratio

 

RPM:

Transmission Gear Ratio Chart
  1st 2nd 3rd 4th 5th 6th
Powerglide (sm. blk) 1.76 1.00        
Powerglide (big blk) 1.82 1.00        
Turbo 350 2.52 1.52 1.00      
Turbo 400 2.48 1.48 1.00      
Turbo 700R-4 3.06 1.63 1.00 0.70    
M20 (1963-65) 2.56 1.91 1.48 1.00    
M20 (1966-74) 2.52 1.88 1.46 1.00    
M21/M22 2.20 1.64 1.27 1.00    
Super T10 (S-code) 2.43 1.61 1.23 1.00    
Super T10 (W-code) 2.64 1.75 1.34 1.00    
Super T10 (P-code) 2.43 1.76 1.47 1.00    
Super T10 (U-code) 2.88 1.91 1.33 1.00    
Richmond 4+1 3.27 2.13 1.57 1.23 1.00  
Richmond 6-speed (a) 3.27 2.13 1.57 1.23 1.00 0.78
Richmond 6-speed (b) 3.01 1.88 1.46 1.19 1.00 0.62
Borg Warner T56 2.66 1.78 1.30 1.00 0.74 0.50
Borg Warner T56 3.36 2.07 1.35 1.00 0.84 0.62
Borg Warner T56 2.97 1.94 1.35 1.00 0.84 0.62
Borg Warner T56 2.97 2.07 1.43 1.00 0.80 0.62
ZF 6-speed 2.68 1.80 1.29 1.00 0.75 0.50
Toploader (close ratio) 2.32 1.69 1.29 1.00    
Toploader (wide ratio) 2.78 1.93 1.36 1.00    
Toploader (overdrive) 3.29 1.84 1.00 0.80    
200-4R 2.74 1.57 1.00 0.67    
4L60E 3.06 1.63 1.00 0.70    
4L80E 2.48 1.48 1.00 0.75    
Tremec 3550 3.27 1.98 1.34 1.00 0.68  
T-5 (F-body) V8, 83-87 2.95 1.94 1.34 1.00 0.74  
T-5 (F-body) V8, 88-92 2.95 1.94 1.34 1.00 0.73  
T-5 (F-body) 83-87 3.35 1.99 1.33 1.00 0.68  
T-5 (F-body) 88-92 3.97 2.34 1.46 1.00 0.79  
Saginaw 3 speed (all) 2.54 1.88 1.00      
Saginaw 4 speed (all) 2.20 1.64 1.47 1.00    
© 2008 Jaws Gear & Axle, All rights reserved.
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