Originally Posted by fast68plymouth
I’m sure there were numerous 528” MP crate Hemis built with heads that were just like these.

Reworked like these are, and then step up from the MP 292 hyd cam to a nice suitable SFT cam....... I bet the difference in power would be pretty substantial.

That would make for a fun dyno test.


Dwayne I agree, it should really make much better power, at 1st when I read how much improvement you made without EXTENSIVE work it reminded me of some old Merlin BBC iron heads I worked on when I was 1st starting out doing port work, basic bowl clean up, Valve job & I got about the same results of improvement as you did on the Hemi heads, I was so exited, I was bragging to my boss & he then asked me,,, Did you forget to put a spark plug in that cyl for the test,,, well, you know the answer LOL smile OOOPSS

1968 Charger COLD A/C Hilborn EFI
512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim
2020 T/A 392 Stock 11.79 @ 114.5