327 C.I.D....202 heads angle plugs....screw in studs port & polish....11 to 1 compression forged....pistons over Mickey Thompson rods.... 292 duration cam with 500 lift solids...Munci M22 close ratio 4 speed....390 posi rear end.... 650 double pumper with high rise....Mallory Ignition system....It had a 10,000 RPM tack....the best I could do, was 8,000 RPM...so I figured there had to be something wrong with the tack....