aluminum -1s are good ! cast iron ones we had back in 1996 had problems with head bolt holes between the intake ports !!!!!
606 hemi pump gas best 9.60 at 142mph on motor 05 hemi daytona 1500 go-mango 4wd quadcab 2007 hotrod mag pump gas drags runner up, roadkill nights dodge big tire winner 2018 2019 back to back
