It's a Indy Max Alum block 4.508 bore Callies 4.75 crank Grodin alum rods CP flat top pistons Jessel belt drive Fred Brewer heads Custom made sheet metal intake by ZONKZ.com Two 850 dominators MSD crank trigger NRC offset dist Lunati cam .875 in .800 ex dur @ .50 290 in 307 ex T&D 1.75 rockers Matton 7/16 push rods