Zigtf216
Active Member
Anybody got an idea how much can be milled off of these heads? Maybe better question is can I mill them down to 50 cc chambers?
Magnum R/T heads
- Thread starter Zigtf216
- Start date
-
that is a small chamber...
while RT's are usually listed at 58cc i've found them to be in the low 60's, so take that into consideration.
a very loose rule is 1cc for every .006 milled
i've personally cut magnums (not RT's) 20 and come out okay behind it, i've heard tell of guys running spec classes what would cut and angle mill up to 40. but you start walking a fine line when the chamber gets that small and you have that much area of quench.
while RT's are usually listed at 58cc i've found them to be in the low 60's, so take that into consideration.
a very loose rule is 1cc for every .006 milled
i've personally cut magnums (not RT's) 20 and come out okay behind it, i've heard tell of guys running spec classes what would cut and angle mill up to 40. but you start walking a fine line when the chamber gets that small and you have that much area of quench.
Zigtf216
Active Member
Yep, roundy round, 2 barrel motor. Flat tops, no cc rule. We used to cut .100 off j heads, made em closed chambers
Whatever you decide to cut off, just remember, the thinner they get, the more of a chance of not sealing. There are only 4 bolts per cylinder. And the only way to get around it is o-ringing. Best to take off as little as possible.
Also remember, if you mill too much off you will have to angle mill the intake sealing surface.
Zigtf216
Active Member
.009 per .010 if memory serves correctly
-
Similar threads
