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.??

 

drivability would be the same i would think.

 

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?

 

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??

 

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.

 

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

 

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.

 

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???

 

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.

 

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