ENGINE RATIOS
|
This page is developed for my own curiosity, but may interest others, so I have posted this info here. The rpm used is 5500. |
||||||||||
|
MOPAR
piston speed fpm-max is 4100 . displacement------------cu in .. -------------------------liters .. rod ratio------best is 1.8+/-.2 .. rod angle-----max 17 degrees .. stroke/bore ratio-best is 94% . . |
400/ 451 3438 451 7.4 1.80 16.93 85.62 |
400
3098 400 6.6 1.88 16.22 77.88 |
440
3438 440 7.2 1.80 16.93 86.81 |
383
3098 383 6.3 1.88 16.22 79.53 |
426 HEMI 3438 426 7.0 1.83 16.69 88.24 |
318
3034 318 5.2 1.85 16.50 84.65 |
||||
|
MOPAR
piston speed fpm-max is 4100 . displacement------------cu in .. -------------------------liters .. rod ratio------best is 1.8+/-.2 .. rod angle-----max 17 degrees .. stroke/bore ratio-best is 94% . . |
340
3034 340 5.6 1.85 16.50 81.93 |
225
3781 225 3.7 1.62 18.80 121.3 |
2.2
3318 135 2.2 1.64 18.62 105.1 |
|||||||
|
CHEVROLET
piston speed fpm-max is 4100 . displacement------------cu in .. -------------------------liters .. rod ratio------best is 1.8+/-.2 .. rod angle-----max 17 degrees .. stroke/bore ratio-best is 94% . . |
400
3438 400 6.6 1.47 20.81 90.91 |
454
3667 454 7.4 1.53 19.90 94.12 |
350
3190 350 5.7 1.64 18.64 87.00 |
302
2750 302 4.9 1.90 16.06 75.00 |
427
3447 427 7.0 1.63 18.71 88.47 |
409
3208 409 6.7 1.75 17.41 81.21 |
||||
|
FORD
piston speed fpm-max is 4100 . displacement------------cu in .. -------------------------liters .. rod ratio------best is 1.8+/-.2 .. rod angle-----max 17 degrees .. stroke/bore ratio-best is 94% . . |
302
2750 302 4.9 1.72 17.76 75.00 |
429
3291 429 7.0 1.84 16.59 82.34 |
428
3648 428 7.0 1.63 18.73 96.37 |
427
3465 427 7.0 1.72 17.79 89.36 |
||||||
|
EARLY HEMI
piston speed fpm-max is 4100 . displacement------------cu in .. -------------------------liters .. rod ratio------best is 1.8+/-.2 .. rod angle-----max 17 degrees .. stroke/bore ratio-best is 94% . . |
241
2979 241 4.0 1.83 16.71 94.48 |
276
3062 276 4.5 1.82 16.80 92.01 |
291
3062 291 4.8 1.82 16.80 89.78 |
331
3323 331 5.4 1.83 16.70 95.14 |
354
3323 354 5.8 1.83 16.70 92.01 |
392
3575 392 6.4 1.78 17.13 97.50 |
||||
Click on the dropdown menu to navigate to my other pages.