Originally Posted By Adrielp
Originally Posted By 441hemi
i have had many sets of 6.1, eagle and apache heads ported and flowed on the same machine. these are my typical results

ported 6.1s- 360-370 @6
ported eagles- 355-360@6
ported apaches- 380@6

and the thitek 2.20 valve heads on my 462 flowed 401@6


Is this a comparison with the same valve and bore in each cylinder head?


same valve??? uh no. a stock 6.1 head uses a 2.08 intake valve. a stock eagle valve is 2.05 and a stock apache valve is 2.14. my thitek heads use 2.20 intake valves. bore size was the same in all of them at 4.125. frankly, we changed it from 4" to 4.185" and saw very little flow difference.

462 gen 3 hemi daily driven