jonnyc

iTrader: (18)

how much would you have to mill a set of 241 heads to get them to 60cc?

thanks

Viper

iTrader: (6)

1cc = .006 so what do the 241's start at?

IMD

iTrader: (10)

66cc

so .036 to be exact.

GuitsBoy

iTrader: (4)

66.67cc chambers technically. I milled .040 and consider it a 60cc chamber.

PONTIAC SLP

iTrader: (3)

gains ? how much RWHP u get from milled heads

Michael02hawk

iTrader: (26)

Doesn't milling the heads favor added torque, with minimal hp gain?

GuitsBoy

iTrader: (4)

I milled the heads at the same time I ported them out, and swapped to an ever so slightly larger cam, so its tough to say. Its true that the primary result of higher compression is torque, but for any given RPM if you increase the torque, you increase the HP too. The main advantage to milling is the added drivability. it really gives you back the low end you tend to lose when going cam only. Do it. Youll be happy you did.

jonnyc

iTrader: (18)

i can't remember the exact formula,but i think for every 1 point you increase compression you gain 10% power.so if you were 10.25:1 and had 400hp at 11.25:1 you should have 440 hp.

PONTIAC SLP

iTrader: (3)

woow amazing so good luck , don't forget to share graph dyno

GuitsBoy

iTrader: (4)

I dont know about all that. It might be a good theory, but in reality the numbers just arent there. A 400 HP cam only car needs to get some seriously good flowing heads as well as a bump in compression in order to hit 440. My guess is that a going from 10:1 to 11:1 is only gonna bring the car from 400 to 410 RWHP. But thats just a number pulled right out of my ***.

LS1C5Vette

iTrader: (11)

This sounds more realistic, maybe a TAD higher for a full point in upping the compression.

SOMbitch

iTrader: (8)

Sounds about right to me. I have always read 2% per compression point.