J 85 GT

i'm gonna start building a 347, will be a higher compression motor like 12:1-12.5:1. anyway i dont know if i wana try to find an older 302 block or just stick with a newer hyd roller block. anyway i am kinda leaning toward hyd roller, i have heard about hyd rollers having problems with bigger rpms and stuff liek that. if i were to build something with a cam up toward the .600' lift range and persay a motor that high 7,000-7,500 will the hydraulic roller still be fine or would i wanna go with something else? and what might be the cheaper route?

1BADASSLX

o!! NO STAY WITH ROLLER, you will be ok i have roller in 331 and have no problems!!!! only problem i had was a wrist pin come out [:@]

mustang93

im no expert, but if you get the right valvesprings, it shouldnt bee too bad, but you prolly might still get some valve float revin that high. but then again im no expert so get some more advice.