Dart Block Super Build Up - Building A Hell-Raiser, Part 2

With Our Foundation Complete, We Top Off Hell-Raiser With A Bunch Of Goodies And Then We Spark It Up.

Dan Ryder Oct 1, 2008 0 Comment(s)
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To aid in the control of crankshaft vibration we called upon ATI Performance Products in Baltimore. This particular unit contains a black zinc chromate finish, laser-engraved 360-degree timing marks, and an SFI 18.1 specification. We ordered this unit with a dual keyway, which is recommended to assist with the additional load of a belt-driven blower. A single keyway is more likely to strip under load, causing the balancer to rotate around the crankshaft.

Anytime a custom-ported cylinder head is utilized, the intake manifold must be port-matched for consistent flow. Here DiSomma uses Dykem (red dye) to mark the ports. First a Fel-Pro intake gasket (PN 1206) is matched to the head port and then laid upon the Super Victor intake to be scribed. Pictured is a partially matched intake port next to a stock port. Big difference, huh?

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After installation of the Edelbrock Super Victor intake manifold, the Comp Cams custom shaft rocker system was installed. Comp went above and beyond with these units, because they weren't listed in the catalog. For the AFR 227 head we needed a custom 1.6/1.6-rocker ratio featuring a .450-inch offset for the intake valve. Comp's shaft rockers will provide added horsepower through valvetrain stability and rigidity, warding off dreaded inconsistencies through flex. DiSomma set valve lash to .020 on the intake and .022 on the exhaust.

Pictured here is the Comp Cams Endure-X solid roller lifters (PN 818-16), which feature EDM Oil Injection Technology guaranteeing a constant flow of oil pressure aiming directly into the needle bearing, guarding against premature wear. Also pictured are the Comp Cams 3/8-inch diameter pushrods (7.950 inches long) next to the Comp 7/16-inch tapered units (8 inches long). We would have liked to use the 3/8 units on the intake side and the 7/16 on the exhaust side (to combat the load on the exhaust valve), however the 7/16 units did not clear the pushrod galleys too well. If head removal is ever necessary we will correct this issue for added insurance.

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