We used Total Seal's AP stainless...
We used Total Seal's AP stainless steel top rings gapped at .020 and their ductile-iron Napier-cut second rings gapped at .022. She's a non-smoker, and leakdown registers at less than a percent, so it's definitely sealed up right.
UNOH is an amazing school. Pulling onto campus you would think you arrived at gearhead nirvana. Tractor trailers, combines, diesel and gas engine vehicles, and race cars were being worked on by students more than happy to get their hands dirty while pursuing baccalaureate degrees. Besides art and history, students have access to one of the greatest motorsports education programs on the planet. Multiple buildings filled with state-of-the-art equipment that was kept operating-room clean showed the Challenge competitors that this school meant business. One of the buildings housed a pair of identical DTS engine dynos that we would test our engines on. Calibrated to less than a gnat's short hair difference of each other, the DTS dynos boast the ability to pull just about any engine down to less than 2,500 rpm without any struggle at all, and produce repeatable, accurate results.
Eagle Specialty Products rods...
Eagle Specialty Products rods have come to dominate the industry. With the ARP L19 rod bolt upgrade and Armor coating, we've personally used them in dozens of bracket race and heads-up engines, making 700-1,000 hp with no problems. Our CP Pistons received the full skirt and head coating treatment from Calico Coatings. The ceramic-based coating facing the chamber allows the energy produced during combustion to continue to be used to propel the piston downward instead of being absorbed as heat into the piston head.
We bolted our pile of heavy metal to the dyno and hooked up 13 feet of 3.5-inch exhaust pipe to the loud end of our Magnaflow mufflers to best simulate the real-world performance of this pump-gas, crate engine imitator. When we fired it up it sounded pissed off at the world, and ready to rock 'n' roll. The little hairs started to raise up on my arms. The conductor with his hand on the dyno stick jammed it forward. The engine screamed so loud and mean, you just wanted more. More than the 845 horses it was pumping out. More than the 750 lb-ft it was blasting. More loud exhaust. More pressure pounding on your chest. More of everything. Just more.
| BY THE NUMBERS |
| 572ci Big-Block Chevy |
| Bore: |
4.562 inches |
| Stroke: |
4.375 inches |
| Displacement: |
572 actual cubic inches |
| Compression ratio: |
11.5:1 |
| Camshaft: |
Mike Jones solid roller |
| Cam duration: |
266/272 degrees |
|
at .050-inch tappet rise |
| Valve lift: |
.842/.813 inch |
| Lobe Separation: |
110 installed at 106.5 |
| Rocker ratio: |
T&D shaft style, 1.9 ratio |
| Top ring: |
. .043 Total Seal |
| Second ring: |
.043 Total Seal Napier |
| Oil ring: |
3mm Total Seal |
| Piston: |
CP Pistons dome |
| Block: |
GMPP Bow Tie short-deck |
| Crankshaft: |
L.A. Enterprises Kryptonite |
| Rods: |
Eagle 6.385-inch Armor coated |
| Cylinder head: |
Edelbrock Victor |
| Intake valve diameter: |
2.35 inches |
| Exhaust valve diameter: |
1.85 inches |
| Intake manifold: |
ProFiler tunnel ram |
| Carburetor: |
two Holley 1150 Dominators |
|
by Pro-Systems |
| Header: |
custom 21/4-inch primary with |
|
Edelbrock merge collectors |
| Ignition: |
ICE Ignition 10-amp system |