All I can say is Wow. These are a 'street' oriented head according to Jon. :o
On the long test (2500 to 6600), I stopped before peak power. That was an Enginemasters test. After the Enginemasters, I have no fear of choking one down to 2500. You can see it still has pretty good poop down low. If it were a real Enginemasters entry, it would have 15 degrees less cam.
I'll list some specs:
block--------------stock 460
bore---------------4.390
stroke-------------4.300
crank--------------cast iron Motorsport, 2.500" rods
rods---------------eagle CRS 6605 F3D
pistons-------------Diamond flat top
compression------10.9
head cc------------84
carb----------------BG king Demon 1150
cam----------------Comp Roller 273-280 110* .457 lobe
This is the same old short block we have been testing with since 2000. We even did all the original SCJ prototype head testing with it. The heads are our prototype Boss Hemi that we are going to be making. Pix on other thread. It has the same valve spring that we install on the P-51 roller heads. (Manley 221243 dual, 1.550") Same retainers also (steel Comp) We ran it to 7500 with no problem. ... Jon
I'll list some specs:
block--------------stock 460
bore---------------4.390
stroke-------------4.300
crank--------------cast iron Motorsport, 2.500" rods
rods---------------eagle CRS 6605 F3D
pistons-------------Diamond flat top
compression------10.9
head cc------------84
carb----------------BG king Demon 1150
cam----------------Comp Roller 273-280 110* .457 lobe
This is the same old short block we have been testing with since 2000. We even did all the original SCJ prototype head testing with it. The heads are our prototype Boss Hemi that we are going to be making. Pix on other thread. It has the same valve spring that we install on the P-51 roller heads. (Manley 221243 dual, 1.550") Same retainers also (steel Comp) We ran it to 7500 with no problem. ... Jon