Btw...let me give an example, something for those of to chew on...a different view..
If you port a head 'like im doing' to flow another 20-30 cfm over stock throughout the whole lift range... which would u rather have, the head that flows 20-30cfm over stock with a run of the mill VJ that seals....or the the stock head with the $250+ VJ that flows the 7 cfm over stock...
In that case, the fancy valve job is not gonna make the power that the porting is...and is NOT the most important thing.
What is important in the long run with cylinder heads...is the ability to seal the valve and good air flow, period.
I have a set of X heads. I took those X heads down to a race shop called total performance, they have a serdi and custom ordered multi angle cutters that they use and claim to make another 12cfm from the existing port....So i go in there and bring my X heads that
flowed 225 'ish up to .600 and had them do they're 5 angle that included chamber top cut....
The heads picked up flow to 240......but they were now done @.450 lift and dropping off....which is where most of these stock heads stop and go saturated or turbulent ootb.....
The more angles....the faster the air at the seat...the faster fps, to a point...turbulence occurs and all that air backs up afterward.
The last ''good valve job'' I had took the flow down .040 in lift...it sped the air up which is usually good, but not when ur already on the verge moving big low lift numbers..
those heads flowed 77cfm @.100 &
[email protected] about
[email protected] 'even before the better valve job'....and they are nothing but old ported factory iron, blowing the doors off of heads that cost over $1500+, but i digress..
All of these heads will do the same or so close that it all simply ends up as preference, like whats ur favorite color...it comes down to how much you can do, want to do..cause the potential is there as well as the limitations, most new 'bolt on' replacement heads all have to work within the same constraints as the factory casting. the push rods are in the same location, the valves at the same angle, the only thing they can really do port wise is cast a lil more meat 'where they can fit it' and cast it with less to remove...like if the factory had ported up 360 head to flow 250-280cfm and then made a mold, cast it.. and sold it in that form.
This thread is not really about brands,whats the best head, someones opinion of what they think is more important, or even valve jobs and 360 heads...
Its about a guy with a set of 318 heads who wants a cheap way to up the hp/air flow on his motor and not break the bank or get over involved.
Im showing u how to do this, how to pull up ur droors and get'r done, it's not hard...once u learn you'll be asking urself why in the hell did u waste all that money on that ricky racer over hyped performance machine shop that bleeds u dry everytime u walk in the door.
BTW most of you who send me pm's about having me port ur heads...I already expect that ur really not. And all u guys with big bucks to spend...I know ud rather go to the high dollar shop and talk to the magazine guy cause spending more makes some of u feel better about it...and I dont mind, really........thats why im giving it away here.
