Chevy LS7 Dome +5cc All 12 deg LS7/ 4.130 bore, 4.000 stroke, 6.125 rod 12.9 to 1 Comp with 67.5cc head (CP Bullets BLS1200-005)

You need the engine code, bore size, stroke, rod length, pin diameter and target compression ratio. These determine the correct piston compression height and crown design.

Ring gaps must be set by your engine builder based on fuel type, boost level and the intended rpm range. Forced-induction engines usually require larger gaps.

Yes. Forged pistons handle detonation and high cylinder pressure better than cast units. Your builder should set the piston-to-bore clearance to suit your application.

The BLS1200-005 pistons are designed to achieve a compression ratio of 12.9:1 when used with LS7 cylinder heads that have a combustion chamber volume of 67.5cc. Ensure that your engine's overall setup aligns with this specification for optimal performance.

When installing the BLS1200-005 pistons, ensure that the bore clearance is set correctly according to your engine's specifications. Additionally, check that the ring gaps are appropriately sized for the intended application, as this will impact performance and reliability.

The BLS1200-005 pistons weigh 488 grams each. It's crucial to consider this weight when balancing the crankshaft and rotating assembly to ensure smooth operation and prevent vibrations at high RPMs.

Yes, the BLS1200-005 pistons feature two valve reliefs to accommodate LS7 engine configurations. Ensure that your camshaft profile and valve timing are compatible to avoid any interference issues.

The BLS1200-005 pistons use a pin size of .927 inches by 2.250 inches. Make sure to verify that your connecting rods are compatible with this pin size during assembly.