Please choose a calculator:
Effective Gear Ratio Calculator
Radial Tire Size Calculator
Horsepower Estimate by ET & MPH
Compression Ratio
Engine Size in Inches and CC's
Converter Slip
Effective Gear Ratio Calculator
Original Gear Ratio:
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Original Tire Diameter:
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New Tire Diameter:
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Radial Tire Size Calculator
Original Tire Size:
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Width
185
195
205
215
225
235
245
255
265
275
285
295
305
315
325
335
345
355
365
375
385
395
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Aspect
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
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Rim
12
13
14
15
16
16.5
17
18
19
20
21
22
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New Tire Size:
|
Width
185
195
205
215
225
235
245
255
265
275
285
295
305
315
325
335
345
355
365
375
385
395
|
Aspect
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
|
Rim
12
13
14
15
16
16.5
17
18
19
20
21
22
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Horsepower Estimate by ET and MPH
Formulas:
Horsepower based on ET for a 1/4 mile run
weight / (ET / 5.825)3 = HP
Horsepower based on trap speed at the finish line
weight * (speed / 234)3 = HP
ET:
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MPH:
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Weight with Driver:
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Compression Ratio Calculator
Bore in Inches:
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Stroke in Inches:
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Chamber in CC's:
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Piston Dish in CC's:
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Deck Height in inches:
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Gasket Thickness in Inches:
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Number of Cylinders:
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CID Calculator
Bore in Inches:
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Stroke in Inches:
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Number of Cylinders:
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Converter Slip Calculator
RPM at Finish Line:
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Gear Ratio:
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Trans Ratio:
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Tire Diameter:
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Trap Speed:
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