That depends on how much power you plan on making. The rule of thumb I would go by is if you are thinking about O-ringing the heads then you will probably need 1/2" bolts. That's what many of the manufacturers go by as well.
------------------
65 fastback
347 DFI injected, TFS heads, T5, 4.11 9", tc subframe conns, torq thrust D's
A little history lesson using today's tech.
|