Originally Posted by NoShoAccord
The H22 head does not change the revving capability of the H23 crank. That is rediculous.
Originally Posted by ludeboom
going by the numbers:
h23a1, 160 peak HP @ 6000 rpm
h22a, 197 peak HP @ 6800 rpm
...meaning higher redline, more cam breathing and an overall increase in performance...
the h22 WILL change the revving "capability" Read what boomer wrote. With the h22, you'll be able to rev 800 rpms higher as opposed to the h23. Since you have a longer gear, you're revving longer/higher, so that means the h22 HAS in fact changed that way your car revs.