Are my AFR225 choking my motor??
Originally Posted by Tony Mamo @ AFR
The 225's provide plenty of airflow for a 400+ cubic inch engine....especially one spinning to 7K or so which ultimately the FAST intake will probably limit anyway....even in ported trim.
Going solid roller, compression, sheet metal, and hopes of turning 7500 RPM's or more (effectively of course, meaning a power curve to justify), then a 225 might hold you back a little. Trust me that combination (with the 225's) would still be stout....you might only make 700 flywheel versus the 750-775 you could have seen with a quality larger runner, higher flowing piece...this of course assumes the head truly flows considerably more air (not just a little more and a lot of extra volume). The big ET stuff looks very promising for that market, and in an application like I just described would probably serve you well, but in a 7K street/strip buildup, I still feel the 225 AFR gets the nod (I'm justifyably biased of course
)
Many independent results out there to back up their effectiveness on similar displacements in various configurations. You guys have to see this kind of stuff every day to truly appreciate that a legitamate 320+CFM's with extremely stong low and midlift flow to compliment (and a somewhat conservative cross section) is a very powerful combination capable of generating over 700 HP with the right combination of parts (in drag race trim of course). Look at the power the 205 street heads have been producing with a similar "recipe".
Once again guys, "Internet" flow numbers are dubious at best (I'm trying to be kind), and are not the end all in producing power anyway. At some juncture in the future I will no longer post on this board and others....If I could leave you with only ONE thing, it would be for all of you to realize just that.
That's my .02 for the evening....
Happy Holidays everyone
Tony M.
Going solid roller, compression, sheet metal, and hopes of turning 7500 RPM's or more (effectively of course, meaning a power curve to justify), then a 225 might hold you back a little. Trust me that combination (with the 225's) would still be stout....you might only make 700 flywheel versus the 750-775 you could have seen with a quality larger runner, higher flowing piece...this of course assumes the head truly flows considerably more air (not just a little more and a lot of extra volume). The big ET stuff looks very promising for that market, and in an application like I just described would probably serve you well, but in a 7K street/strip buildup, I still feel the 225 AFR gets the nod (I'm justifyably biased of course
)Many independent results out there to back up their effectiveness on similar displacements in various configurations. You guys have to see this kind of stuff every day to truly appreciate that a legitamate 320+CFM's with extremely stong low and midlift flow to compliment (and a somewhat conservative cross section) is a very powerful combination capable of generating over 700 HP with the right combination of parts (in drag race trim of course). Look at the power the 205 street heads have been producing with a similar "recipe".
Once again guys, "Internet" flow numbers are dubious at best (I'm trying to be kind), and are not the end all in producing power anyway. At some juncture in the future I will no longer post on this board and others....If I could leave you with only ONE thing, it would be for all of you to realize just that.
That's my .02 for the evening....
Happy Holidays everyone
Tony M.
