Low Compression Head Mod // 2007-2017 ZR/F/XF/M 800/8000
LOW COMPRESSION HEAD MOD
We can machine your stock head's combustion chamber to lower the compression ratio to 12:1 or 11:1 so you can run increased timing with our Stage 3 Pipe, or for Supercharger or Turbo applications.
Note: 2007-2009 non-HO engines are 12:1 stock.
Core Options:
1. Send us your stock head core and we will send you the Modified Head once we receive it.
2. Purchase the Modified Head outright and we will send it out right away. You can keep your stock head, or ship it to us and we will credit you back when we receive it!
| Manufacturer | Speedwerx, Inc. |
|---|---|
| NOTE | This is for the head machining only- you must send your head in or purchase one outright! |
| Prop 65 | ⚠WARNING: CANCER AND REPRODUCTIVE HARM — SPEEDWERX, INC. PROP65 WARNINGS OR WWW.P65WARNINGS.CA.GOV. |
WARNING: Cancer and Reproductive Harm- www.P65Warnings.ca.gov See Proposition 65 Information for more on this Consumer Product Exposure Warning for residents of California.
These items are intended for closed-course competition only. Alteration of emissions-related components can constitute violation of federal and/or state laws. Substantial fines and penalties can result if used for other than closed-course competition use.
