zamboxl

iTrader: (1)

Hey guys i was wondering if there would be any diff in streetavility, durability, between a stage one head and a stage 2 or a 3. So would a bigger port affect any of the above or is it just more performance. Lets say i put stage one , or stage 3 heads in my car would both cruse the same??? or would teh stage 3 head be a chopier, less durable ride.??

CrazytrainWS6

drivability would be the same i would think.

Steve Burger

iTrader: (33)

I would think that the cam selection based on the head flow would make a bigger difference. Why get a better flowing head if you don't have the cam to take advantage of the flow? Do you have a cam in mind?

zamboxl

iTrader: (1)

well i am already running a thunder racing 224,224 so i would think that be enough. i am not lookign to by a set of heads right now i just wanted to know for the future. So basically a stage 3 head is just as good as a stage 1 as far as reliability and averyday driving??

MUSTANGEATER

iTrader: (10)

There's no uniformity among Head Porters so someone's stage 1 maybe someone's stage 2 and vice versa. Best bet is to call the porter you wanted to talk to and find out what they think.

zamboxl

iTrader: (1)

ok well lets say a small port job and a big port job instead of a stage 1 and a stage 3.

66deuce

iTrader: (1)

ok,here's my theory.small ports have more velocity than a bigger port,all else being equal.like steve said,you have to match the cam to what the head will flow.if your going to spin your motor no higher than 6000rpms,(with a small cam)a bigger port will not fill the cylinders as well as a smaller port with more velocity.but with a big cam, spinning the motor up to 7000 or so,than the bigger port will work better at the higher rpms,but flow will be a little lazy at the low range.it's a little over simplified,but it's my theory.

zamboxl

iTrader: (1)

oooooo so basically if i iam not going to be reving into v tech territorry a big port job won't really be the best??? so with a 224, 224 cam with a factory rev limiter a medium port job will work better than a large one???

Steve Burger

iTrader: (33)

I agree with 66deuce. Port velocity is very important. A bigger port will not have the velocity of a smaller port with your cam.

Over simplified, but think of a garden hose and a 10" sewer pipe both limited with the same restriction at the end (cam and valve size). The garden hose will have much more velocity of flow than the sewer pipe.

66deuce

iTrader: (1)

with a stock cube motor yes,you would have more power under the curve,or better average horsepower over the entire rpm range. you will probably make more peak horse power with a stg. 3 head,but will lose out on the low and mid range.for a street car,you want to maximize low and mid range torque,especially if it's a little on the heavy side(like our f bodys).i would think something like a TEA stg.1.5 would be a good match for your cam.just my .02