Manley Performance

Manley Chevy LT-1 6.2L 1.590in Head Diameter Pro Flo/Severe Duty Exhaust Valves (Set of 8) - 12347-8

(No reviews yet) Write a Review
SKU:
MAN12347-8
UPC:
807298086019
MPN:
12347-8
Availability:
Regularly stocked product
  • Photo - Primary
  • User 2
  • User 1
  • User 3
  • Photo - out of package
  • User 1
MSRP: $401.42
$301.07
— You save $100.35
Frequently bought together:

Description

Are these valves compatible with my specific vehicle?
Manley Performance valves require you to confirm exact fitment with your vehicle's specific make, model, and year before installation.

Do I need special tools for installation?
Professional installation is strongly recommended for these high-performance valves to ensure optimal function and engine safety.

Manley Pro Flo Valves, featuring robust XH-428 exhaust and NK-844 intake materials, are best for performance enthusiasts achieving peak engine power. These valves boast chrome stems and hard tips for exceptional durability under extreme temperatures. Trust in Manley's engineering for superior engine performance and longevity.

Key Features

  • XH-428 for exhaust
  • NK-844 for intake
  • chrome stems
  • hard tips
  • swirl-polished underheads
  • fully machined combustion faces

Why Choose the MAN Pro Flo Valves

Delivers superior exhaust flow for increased horsepower and torque.

Achieves optimal intake airflow for enhanced engine responsiveness.

Provides exceptional durability and resistance to extreme temperatures.

Maximizes combustion efficiency for a smoother, more powerful engine.

Transforms engine performance with precision-engineered combustion faces.

Who Is This For?

Track / Autocross — 8/10
XH-428 exhaust and NK-844 intake materials are robust.

Drag Racing — 8/10
XH-428 exhaust and NK-844 intake materials are robust.

Racing Competition — 8/10
XH-428 exhaust and NK-844 intake materials are robust.

Street Performance — 7/10
Fully machined faces maximize combustion efficiency for power.

Engine Performance — 7/10
Fully machined faces maximize combustion efficiency for power.

Frequently Asked Questions

Will the Manley Performance MAN Pro Flo Valves fit my vehicle?

Confirming precise fitment for your vehicle is essential for optimal performance. Always consult with a qualified technician or refer to Manley Performance's fitment guide to ensure compatibility with your specific application. This step guarantees a perfect match for your engine's needs.

How difficult is the installation of Manley Performance MAN Pro Flo Valves?

Professional installation is recommended for the Manley Performance MAN Pro Flo Valves. This ensures precise setup and integration, aligning with the advanced nature of these high-performance components. Trusting a qualified technician maximizes their functional benefits.

What performance improvement do the MAN Pro Flo Valves provide over stock?

These valves deliver superior exhaust and intake airflow, significantly enhancing engine responsiveness and horsepower. With a "Street Performance" score of 7, they maximize combustion efficiency for a smoother, more powerful engine experience. Enjoy a tangible power upgrade.

What makes Manley Performance MAN Pro Flo Valves durable for racing applications?

The XH-428 exhaust and NK-844 intake valves are constructed with robust materials, earning an 8 score for "Track / Autocross" usage. Chrome stems and hard tips further provide exceptional durability and resistance to extreme temperatures found in demanding motorsport environments. These valves are built for the rigors of competition.

Additional Resources

Official Manley Performance Product Page

Important Notices

⚠️ Proposition 65 Warning: This product can expose you to chemicals including lead and/or other substances known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.

View AllClose

Additional Information

Clearance Item:
N
MPN:
12347-8
Proposition 65:
Y
Case Lot Quantity:
1
Category:
Engine Components>Valves
Universal Fitment:
Y
Product Level:
Premium Performance
Track / Autocross:
8/10
Drag Racing:
8/10
Racing Competition:
8/10
Street Performance:
7/10
Engine Performance:
7/10
View AllClose

Related Products

Related Products