RHS Engine Block

Valvetrain Capabilities: Provisions for Gen III & Gen IV cam & knock sensors & valley covers, Cam tunnel will accommodate stock through oversized 60mm roller bearing cams (includes cast-in lock screw pads), .842” or .904” lifters standard with material available for oversized lifter access (accepts 1.060” bushing for keyed lifters), In the standard deck, maximum pushrod angularity = Less than 2 degrees, Includes Ampco 45 cam thrust plate and aluminum rear cover, Lifter bosses designed to clear tie bar lifter

Additional Information

RHS LS Block, Tall 9.750" Deck, .904 Lifter, 55mm Roller Cam Bearing (Machined Only) - Hone to 4.120"

Part Type

Engine Block

• .904” lifters standard
• 2 extra links in the timing chain – Timing sets available from COMP®
• 6 head bolt design w/ full water jacket around the cylinders (based on LS7 design)
• Chilled main bearing bulkheads for added strength
• Gen III/Gen IV compliant with race mounts for Gen I, Gen II, Gen III & Gen IV engines
• Optimized billet main caps & improved windage
• P1 MFG main stud kit standard with enough material in castings to accommodate up to a 0.5" fastener
• Raised cam centerline (.388”/9.86mm) to allow larger stroke
• Rolled threads on all threaded holes for added strength

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Product Downloads

#	Document Type	Download
1.	Installation Instructions

Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.

Reference Information