Holley Dominator ECU, dual O2 sensors, Wilson 105MM LS style TB and Injector Dynamics ID2000 injectors on my car. Cam is 274/286 @ 0.050".
What is the LSA 114° or 106° ? LSA has a huge effect on overlap which is the problem with a long duration cam and computer controlled EFI or manifold vacuum with a carb.
As far as that goes why have a long duration cam if you can not rev it to 7,800 RPM where I shifted my 582 big block with a solid roller cam. Most hydraulic rollers sign off around 6,400 RPM due to the heavy tappets floating the valves. This is why crate motors have duration of about 230°
Blue prints 383 Camshaft Information:
•Hydraulic flat tappet
•.488" Intake lift
•.486" Exhaust lift
•229° Intake duration @ .050"
•230° Exhaust duration @ .050"
•110° lobe separation
GMPP LS3 (6.2l) 495 hp Hot Cammed crate motor
Camshaft Type (P/N 88958753): Hydraulic roller
Valve Lift (in): .525 intake / .525 exhaust
Camshaft Duration (@.050 in): 219° intake / 228° exhaust
ZZ4 350 •Camshaft Type (P/N 12677151): Hydraulic roller
•Camshaft Lift (in.): 0.473” intake / 0.473” exhaust
•Camshaft Duration (@.050 in.): 215° intake / 223° exhaust
ZZ572 BBC 620 horse •Camshaft Type (P/N 19210721): Hydraulic roller
•Camshaft Lift (in.): .632 intake / .632 exhaust
•Camshaft Duration (@.050 in.): 254° intake / 264° exhaust
Note as displacement increases duration also must increase to move more air in the same period of time. Generally eight degrees are added for each increase of 50 cubic inches over (or under) a 350 base engine.
Cams chosen for the noise they make are like a muffler choice of louder being better. It has no basis in performance (engineering); and is like a kid putting base ball cards in the spokes of his bike. Doesn't make it go faster but makes the owner feel better.