Cylinder head flow - What is crucial in a stocker?

[Charles Stewart]

Dear SSDiv6,
I will throw this add up to your paint preparation subject and just for discussion or the fun of it (with no disregard to your point) an even if this isn’t in direct relation with the title subject.
I was at the Napierville Nationals Open Series few years ago and I was taking a close look at the NHRA “open tech barn” at the back of the tower. A certain stocker had his engine check for the approval of new E.T. record, for the second year in a row.
While waiting and checking the Tech’s work, the car parts, suddenly a small detail pop-up… The golf ball effect…The car had a good or important orange peel surface…

[L.Fite]

Originally Posted by Charles Stewart

Dear SSDiv6,
I will throw this add up to your paint preparation subject and just for discussion or the fun of it (with no disregard to your point) an even if this isn’t in direct relation with the title subject.
I was at the Napierville Nationals Open Series few years ago and I was taking a close look at the NHRA “open tech barn” at the back of the tower. A certain stocker had is engine check for the approval of new E.T. record, for the second year in a row.
While waiting and checking the Tech’s work, the car parts, suddenly a small detail pop-up… The golf ball effect…The car had a good or important orange peel surface…

I was once told by a racer that after he had a vinyl top put on his car he picked up MPH...?...
Fact?... or fiction?...

[Rob Petrie E395]

Earlier in the thread somebody mentioned price. I bought my heads from another racer. So I don’t know. But is that accurate $5,000 for new stocker heads and $1,800 for an intake? And is that assuming you supply them with good cores to start with? I’m just curious. If you think about it. Even if you knew how to do it and what do do. By the time you bought all the equipment to do it. You’d have to do probably 100 sets of heads or more to break even on used equipment. So in the end for most of us it’s still cheaper. Although expensive. Plus you theoretically get all their R&D as things advance over time. Again I’m just curious at some point I’ll get a new set. But for now these ones I have will have to do. If you don’t want to say here. Feel free to PM me.

[Bill Diehl]

Originally Posted by Charles Stewart

Dear SSDiv6,
I will throw this add up to your paint preparation subject and just for discussion or the fun of it (with no disregard to your point) an even if this isn’t in direct relation with the title subject.
I was at the Napierville Nationals Open Series few years ago and I was taking a close look at the NHRA “open tech barn” at the back of the tower. A certain stocker had is engine check for the approval of new E.T. record, for the second year in a row.
While waiting and checking the Tech’s work, the car parts, suddenly a small detail pop-up… The golf ball effect…The car had a good or important orange peel surface…

Air is different than water, or is it? anybody that messed with overpowered outboard boats knows that primer is faster than smooth and shiny on the pad and the lower unit, 4,5 or 6 mph and how you go from stuck in the upper 90's to breaking triple digits......that "theory" that has been proven also applies to cylinder head ports...but what do I know? the "experts say, size matters more", not flow

[Stan Weiss]

Originally Posted by Bill Diehl

Air is different than water, or is it? anybody that messed with overpowered outboard boats knows that primer is faster than smooth and shiny on the pad and the lower unit, 4,5 or 6 mph and how you go from stuck in the upper 90's to breaking triple digits......that "theory" that has been proven also applies to cylinder head ports...but what do I know? the "experts say, size matters more", not flow

You missed one, velocity. CFM, CSA, and Velocity are like the 3 sides of a pythagorean triangle. If you know any 2 the 3rd is easily calculated.

Stan

[Dave Gantz]

Originally Posted by Bill Diehl

Air is different than water, or is it? anybody that messed with overpowered outboard boats knows that primer is faster than smooth and shiny on the pad and the lower unit, 4,5 or 6 mph and how you go from stuck in the upper 90's to breaking triple digits......that "theory" that has been proven also applies to cylinder head ports...but what do I know? the "experts say, size matters more", not flow

Been a while, Bill.