racer69
01-05-2013, 12:05 AM
1. Must be same as corporate manufacture. GM to GM, Ford to Ford.
2. SHORT BLOCK: A. Block - Must be stock or OEM replacement. B. Engine Displacement - Bore can be up to 4.165. Maximum cubic inch displacement 410. C. Components - 1. Pistons: Can be forged aluminum. Rod: No aluminum or titanium rods. Must be steel connecting rod. 3. Crankshafts: Stock or OEM replacement.
3. HEAD: Cast iron straight sparkplug, stock valve angle (23 degree Chevy) intake runner height and exhaust bolt pattern. Angle plugs permitted on 360 cubic inch or less. OEM or replacement heads. Steel or stainless steel valves only.
4. ROCKER ARMS: OEM stamped steel or roller type only (see weight addition below for use of roller rockers). NO shaft type. Yella Terra brand rockers permitted.
5. CAMS: Hydraulic or solid flat tappet lifters only. Standard shape. No rollers. No billet camshafts. No belt drive timing systems. Maximum lift 550.
6. MANIFOLDS: Exhaust - No coating or cutting. Must retain factory stock exhaust flange. No new style Corvette or truck manifolds. Cast iron manifold only - no steel or stainless steel. 2 1/2” exhaust tubing from manifold to exit end. Tubing may be oval shape for clearance. Pipes MAY NOT be connected by equalizer tube or by crossing. Pipes must exit to right side of car in front of right rear wheel. No flex pipe.
7. INTAKE: Cast iron intakes only. Dual plane Intake: Plenum may be cut where center divider remains. Divider can be no lower than .500” below top surface of intake.
8. DISTRIBUTOR: HEI type with stock appearing cap and coil only. Aftermarket modules allowed. Rev limiter module may be required for special conditions and cars not meeting specifications. Distributor and coil must remain as one unit. No remote coils. No ignition boxes.
Its the Yella Terra rule that concerns me. I have never seen a none shaft yella. We have to add 50# to run a roller rocker. My cam is .550 lift. We also have a gear rule keeping rpms down. Fast guys was still running the coated stamped last year. As was we. We never finished lower than 4th the whole season. Lost championship by 1 point. At 600+ dollars and the added weight I dont see it being worth it. Very surprised to even see the new rule! What y'all think? Would they be worth it?
2. SHORT BLOCK: A. Block - Must be stock or OEM replacement. B. Engine Displacement - Bore can be up to 4.165. Maximum cubic inch displacement 410. C. Components - 1. Pistons: Can be forged aluminum. Rod: No aluminum or titanium rods. Must be steel connecting rod. 3. Crankshafts: Stock or OEM replacement.
3. HEAD: Cast iron straight sparkplug, stock valve angle (23 degree Chevy) intake runner height and exhaust bolt pattern. Angle plugs permitted on 360 cubic inch or less. OEM or replacement heads. Steel or stainless steel valves only.
4. ROCKER ARMS: OEM stamped steel or roller type only (see weight addition below for use of roller rockers). NO shaft type. Yella Terra brand rockers permitted.
5. CAMS: Hydraulic or solid flat tappet lifters only. Standard shape. No rollers. No billet camshafts. No belt drive timing systems. Maximum lift 550.
6. MANIFOLDS: Exhaust - No coating or cutting. Must retain factory stock exhaust flange. No new style Corvette or truck manifolds. Cast iron manifold only - no steel or stainless steel. 2 1/2” exhaust tubing from manifold to exit end. Tubing may be oval shape for clearance. Pipes MAY NOT be connected by equalizer tube or by crossing. Pipes must exit to right side of car in front of right rear wheel. No flex pipe.
7. INTAKE: Cast iron intakes only. Dual plane Intake: Plenum may be cut where center divider remains. Divider can be no lower than .500” below top surface of intake.
8. DISTRIBUTOR: HEI type with stock appearing cap and coil only. Aftermarket modules allowed. Rev limiter module may be required for special conditions and cars not meeting specifications. Distributor and coil must remain as one unit. No remote coils. No ignition boxes.
Its the Yella Terra rule that concerns me. I have never seen a none shaft yella. We have to add 50# to run a roller rocker. My cam is .550 lift. We also have a gear rule keeping rpms down. Fast guys was still running the coated stamped last year. As was we. We never finished lower than 4th the whole season. Lost championship by 1 point. At 600+ dollars and the added weight I dont see it being worth it. Very surprised to even see the new rule! What y'all think? Would they be worth it?