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Manley Performance Manley Small Block Chevy LS-1 / LS-2 (LS-6 Head) 1.550 Head Diameter Race Flo Exhaust Valves
Manley Performance Manley Small Block Chevy LS-1 / LS-2 (LS-6 Head) 1.550 Head Diameter Race Flo Exhaust Valves
Manley Performance Manley Small Block Chevy LS-1 / LS-2 (LS-6 Head) 1.550 Head Diameter Race Flo Exhaust Valves
Manley Performance Manley Small Block Chevy LS-1 / LS-2 (LS-6 Head) 1.550 Head Diameter Race Flo Exhaust Valves
Manley Performance Manley Small Block Chevy LS-1 / LS-2 (LS-6 Head) 1.550 Head Diameter Race Flo Exhaust Valves
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Manley Small Block Chevy LS-1 / LS-2 (LS-6 Head) 1.550 Head Diameter Race Flo Exhaust Valves

MAN11361-8
807298048833
Valves
20+ Units In Stock - Ships Next Business Day
$ 251.58 $ 188.69
$ 188.69

SKU: 11361-8 | UPC: 807298048833

Manley Small Block Chevy LS-1 / LS-2 (LS-6 Head) 1.550 Head Diameter Race Flo Exhaust Valves 1997-2005 Corvette Camaro CTS-V Firebird GTO

Manley Race Series exhaust valves deliver reliable performance for LS1 and LS2 engines equipped with LS6 cathedral port heads. These 1.550 inch head diameter valves fit 1997-2005 Cadillac CTS-V Chevrolet Camaro Corvette and Pontiac Firebird GTO models. Engineered to withstand the demands of bracket drag and oval track racing up to 8000 RPM these valves feature a patented Race Flo design for enhanced flow and durability.

Key Features

  • Race Flo Design: Patented machining on valve head creates lubricant reservoir to reduce wear and improve high RPM stability
  • Precise Sizing: 1.550 inch head diameter 11/32 inch stem diameter 4.880 inch length for exact fit in LS1 LS2 LS6 heads
  • Stainless Steel Build: Heat resistant material handles extreme exhaust temperatures and valve train stress
  • Set of 8 Valves: Complete exhaust valve kit for one V8 engine rebuild or upgrade
  • High RPM Capability: Tested for continuous operation at 8000 RPM in racing applications

Product Notes

  • Confirm cylinder head type matches LS cathedral port configuration before purchase
  • Pair with matching intake valves for balanced airflow
  • Special order processing may apply contact for lead times

Installation Notes

  • Professional installation recommended.
  • Requires three angle valve job and proper seat cutting for optimal sealing
  • Compatible with stock or aftermarket valve springs up to 8000 RPM limits

This Part Fits

Year Make Model Submodel
2004-2005 Cadillac CTS V
1998-2002 Chevrolet Camaro Z28
1997-2004 Chevrolet Corvette Base
2001-2004 Chevrolet Corvette Z06
1998-2002 Pontiac Firebird Formula
2004 Pontiac GTO Base

Why Choose Manley?

  • Over 35 years as valvetrain leader for racing engines
  • Valves trusted in NHRA IHRA and dirt track competition
  • Manufactured with tight tolerances for repeatable performance

Frequently Asked Questions

  • Q: Will these valves fit LS6 heads on 2001-2004 Corvette Z06?
    A: Yes designed specifically for LS1 LS2 and LS6 cathedral port heads including 2001-2004 Corvette Z06 models
  • Q: What material are the Race Flo valves made from?
    A: High strength stainless steel with proprietary Race Flo treatment for heat resistance and lubrication
  • Q: What is the warranty on these valves?
    A: Manley offers limited lifetime warranty against manufacturing defects when installed correctly

Shipping & Handling

  • Method: UPS Ground
  • Availability: In stock - ships same or next business day
  • Packaging: Protective cardboard box 1 x 5 x 5 inches
  • Weight: 0.95 lbs

Request For Information

Have questions about Manley Small Block Chevy LS-1 / LS-2 (LS-6 Head) 1.550 Head Diameter Race Flo Exhaust Valves? Fill out the form below and we'll get back to you by the next business day.
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