RPM HP TQ
2000 142 374
2500 180 379
3000 229 401
3500 285 427
4000 335 440
4500 375 438
5000 403 424
5500 410 390
6000 379 331
Peak volumetric efficiency 93.0% @4500
Peak BMEP 186.5 @4000
Edelbrock used these heads with a little different cam and a little more compression to make 435/435.