So I see alot of guys hating on rock engine parts. Saying they don't last ull blow a head gaskit blah blah blah. Well I'm hear to but a end to it if ur wondering if rock engine kits or parts are good the amsewer is yes. My 10:1 engine in my celica runs everything rock other then the head cam and springs. And I make 106whp and 158 wftlbs on 87octane I've abused the living Hell out of my engine it see's 5500-5800(fuel cut) daily and still doesn't skip a beat it all has to do with how u build the engine. Any good part will fail if not installed,gaped,cut right. So if u want the truth about rock yes there ˟˟˟˟ is good. Now I'm not running one of.there heads but I've used them on rebuilds there ok but must have some pocket porting done the seat to short turn and bowl blend is way off. But other then that there great

 

BTW yes my engine has some miles on it about 20k now and I've driven it hard everyday sence it was built

 

Kinda ironic this is in newbie tech

:wabbit2: