WE GOT BOOST! 1K-HP SBF COMBOS. ALL TURBO- 331-434 INCHES. CHECK OUT THIS VIDEO ON HOW TO MAKE 1,000 HP FROM A SMALL-BLOCK FORD COMBO, INCLUDING MY VERY FIRST 1,000-HP SMALL BLOCK. CHECK OUT THESE BUILDS, INCLUDING A JUNKYARD 351W, A DART SHP 363, 351W-BASED 427 AND 434 STROKERS AND A 331 (MY FIRST 1,000-HP COMBO). EVERY TURBO COMBO (SINGLE AND TWIN) REACHED OR EXCEEDED 1,000 HP!