Description
This Extreme Duty exhaust valve listing is organized specifically for Chevrolet Big Block 1.900 Diameter Stock Length, with the available dimensions presented as selectable configurations for easier cylinder-head planning. The parent listing is distinguished by Part #11507-1, which should be cross-checked against the rest of the engine combination.
For Chevrolet Big Block 1.900 Diameter Stock Length, valve diameter changes can alter seat work and chamber/shrouding relationships, while alternate overall lengths can change installed height and rocker geometry.
Key Product Details
- Application: Chevrolet Big Block 1.900 Diameter Stock Length
- Manley Series: Extreme Duty
- Valve Position: Exhaust
- Title Specification: Part #11507-1
- Manufacturer Part Number: 11507-1
Package Quantity
Sold individually. One valve is supplied per selected SKU. Order the intake or exhaust quantity required for the cylinder-head configuration being assembled. This quantity applies to the selected Manley SKU family shown on this product page.
Selection & Fitment Notes
Before purchase, compare the selected valve dimensions with your head manufacturer or engine builder’s specification, including stem diameter, valve length, seat diameter, and keeper arrangement.
Professional engine assembly and measurement are recommended. Product specifications should be confirmed against the selected Manley part number and the requirements of the exact engine build.