Head cc numbers , what they will do
Thread Starter
Drifting
Joined: Dec 2008
Posts: 1,336
Likes: 169
From: Westampton New Jersey
Head cc numbers , what they will do
Ok, Im a detail and design guy, but not the best engine guy yet.
Workin on it.
Heres my question
Gonna put new aluminum heads on the 350
Looking at some that offer 64cc or 70cc with 180 or 200cc option also
What will the different sizes do?
Which combo will do what, looking for street muscle, I wont be doin gany racing.
Thanks
Workin on it.
Heres my question
Gonna put new aluminum heads on the 350
Looking at some that offer 64cc or 70cc with 180 or 200cc option also
What will the different sizes do?
Which combo will do what, looking for street muscle, I wont be doin gany racing.
Thanks
Race Director
Joined: Dec 1999
Posts: 19,610
Likes: 778
From: Forked River NJ
The 64 cc head will obviously raise thecompression ratio. Depending on your current pistons this could be good or bad. Wha tis your present compression ratio and what heads are on the motor now. The 180 heads are good for a mild 350. The 200 heads will be better depending on the cam you are running. Also what heads are these. I have seen some 180 heads outflow some 200 heads.
Thread Starter
Drifting
Joined: Dec 2008
Posts: 1,336
Likes: 169
From: Westampton New Jersey
The 64 cc head will obviously raise thecompression ratio. Depending on your current pistons this could be good or bad. Wha tis your present compression ratio and what heads are on the motor now. The 180 heads are good for a mild 350. The 200 heads will be better depending on the cam you are running. Also what heads are these. I have seen some 180 heads outflow some 200 heads.
Looking at Brodix heads or maby Edelbrock rpm
Melting Slicks
Joined: Oct 2008
Posts: 2,154
Likes: 69
From: Regina Sk Canada
The cc number is the volume of air that head can move. The larger the cc the more air it will move at higher rpm. Not a head you want for street use, as it has a slow air speed down low. You want a smaller runner cc head with good air speed for a street motor.
Le Mans Master
Joined: Dec 2003
Posts: 5,727
Likes: 38
From: Fremont CA
I would say a 350 that isn't a high RPM race motor would run better with intake port volume in the 180cc range, leave the 200cc intake size for the 383cu/in crowd. Particularly true if your running an automatic transmission or tall gears.
