A side-effect would be overspinning the accesories. That can cause an alternator to go bad, but only if revving real high for an extended period of time. You could pulley the alt. down to compensate, or get a better alt., or just drive it like normal. I'm sure it would take a lot of rpm to really wear it out.

 

i will be spinning decently high, im thinking i should find a how to port video somewhere lol.

i gotta find those flow charts again.

 

Dude don't try to port your heads if you never done so, you will end up losing power in the end. As far as blower cams with a centri yes you can make much more power but you will lose mid range i.e. 4,000 rpms shifts to 5,000 rpms in terms of power it will come on more violently up top. Just something to consider.

I think KB with blower cams would be simply amazing.

 

to me thats bad advice, how are you ever supposed to learn something if you never do it?

ideally i would like to put the cams on stock, dyno then port them /dyno but i don't feel like messing with cam timing twice lol.

 

Keep in mind that the 4.6L with it's small displacement is not like the older bigger cube pushrod motors. These are not heads that you can just hog-out and make good numbers. Velocity is just as/maybe more important than cc flow. Ideally if you had access to a good flowbench, you could make some good gains by cleaning up around the bowl areas. Just make sure velocity stays up or torque will suffer big time. You may know what you're doing.........that's great. That is one area I would not try on my own personally, but more power to ya !

Derrick