Richard's 360 Van engine (above) and 318willrun's 360 Duster etc.. should be enough evidence alone for AJ to at least give him some pause and rethink his statements for there accuracy about how mods will effect a low cr engines hp and torque.
Below examples of other Mopar displacements built on low cr still making decent hp and torque.
Here's the effect of 4bbl headers and xe262h cam on a low cr 318
https://www.hotrod.com/articles/mopp-0312-318-long-block-bolt-ons/
| TORQUE SUPERFLOW 901 DYNO-TESTED AT WESTECH | | | |
| RPM | BASE | MOD 1 | MOD 2 |
| 2,000 | 292 | | |
| 2,500 | 287 | | |
| 3,000 | 287 | 338 | 336 |
| 3,500 | 272 | 335 | 340 |
| 4,000 | 248 | 326 | 330 |
| 4500 | 218 | 309 | 319 |
| 5,000 | 188 | 285 | 296 |
| 5,500 | | 250 | 258 |
| HORSEPOWER SUPERFLOW 901 DYNO-TESTED AT WESTECH | | | |
| RPM | BASE | MOD 1 | MOD 2 |
| 2,000 | 112 | | |
| 2,500 | 137 | | |
| 3,000 | 164 | 193 | 192 |
| 3,500 | 182 | 224 | 227 |
| 4,000 | 189 | 248 | 252 |
| 4,500 | 186 | 265 | 274 |
| 5,000 | 179 | 271 | 282 |
| 5,500 | | 262 | 270 |
Here's a low cr 440 build.
Dyno testing a stock(?) 1972 440
"But what can it achieve on a low compression 440? With the 516's we are now all the way up to 7.85:1 compression, woo-hoo!"
RPM..............TQ............HP
3000.............434..........248 my test, I'll start the RPM where I want.
3100.............445..........263
3200.............457..........278
3300.............458..........288
3400.............462..........299
3500.............458..........305
3600.............447..........307
3700.............443..........312
3800.............443..........321
3900.............446..........331
4000.............450..........343
4100.............453..........354
4200.............461..........368
4300.............463..........379
4400.............461..........386
4500.............470..........402 402 HP? hang on!
4600.............473..........414 peak torque? really, there is a peak? maybe a plateau.....
4700.............468..........418
4800.............467..........427
4900.............459..........428
5000.............459..........437
5100.............453..........439
5200.............453..........448 1 HP/CI
5300.............445..........449 Peak HP
5400.............428..........440
5500.............421..........441
5600.............407..........434
5700.............397..........431
5800.............391..........431