Curious about AAR/TA Heads
Jim, 2 question’s......
1- did the wider pinch area show an improvement in flow on those heads?
2- 620hp vs 629hp peak to peak, but did the hp gap widen as the motor got higher into the powerband?
Question 1- No.
Question 2- Actually no again. Best just to show dyno results from before and after. I believe the engine was still choking and needed an even larger cross section. But it did have a pretty small cam at 258/260 @ .050".
I'll never know 'cause I've given all this stuff up. I'm going out now to practice w/ my compound bow.
RPM.......LB-FT/HP before..........LB-FT/HP w/ opened pinch
3000.........467/267................474/270
3500.........471/314................471/314
4000.........480/366................486/370
4500.........554/474................558/478
5000.........555/529................572/545
5100.........554/538................574/557
5200.........555/549................572/566
5300.........554/559................569/574
5400.........547/563................566/582
5500.........542/567................557/583
5600.........547/583................558/595
5700.........536/582................552/598
5800.........534/590................551/608
5900.........529/594................538/604
6000.........527/602................534/610
6100.........521/606................533/619
6200.........517/611................529/625
6300.........511/613................519/622
6400.........507/618................516/629