Lifters
m (→Roller lifter) |
m (→GM hydraulic roller lifter: corrections) |
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| − | The Cadillac CTS-V lifters, GM-88958689 ( | + | The Cadillac CTS-V lifters, GM-88958689 (a set of 16 are ~ $300.00 as of mid-2013) will not withstand excessive valve spring pressure. The Cadillac CTS-V lifters are lighter but are not able to handle high spring pressure any better than standard Chevrolet LS-7 lifters (GM-12499225, set of 16 go for ~ $140.00 as of mid-2013). Either of these lifters are designed to be used with </= 100 lb. seat pressure and </= 300 lb. open pressure. If using more pressure with standard weight valve train components (no titanium, etc.), you should consider using an aftermarket hydraulic roller lifter like Comp Cams 'Reduced Travel' p/n 875 or Comp Cams p/n 15850 'Short Travel' hydraulic roller lifters (use with OEM dog bone retainers), made for OEM hydraulic roller blocks. These lifters use a very small preload (0.000 to 0.005") and the total travel is just 0.050". |
| − | GM uses the p/n 12499225 (AC Delco p/n HL-124) roller lifters as service replacements in all Chevrolet 1991 | + | GM uses the p/n 12499225 (AC Delco p/n HL-124) roller lifters as service replacements in all Chevrolet 1991 to 2013 (and likely beyond) engines. Don't use lifters designed for use in net lash valve trains (example is AC Delco p/n HL-105, GM p/n 5234670); severe engine damage can occur due to lifter loft/pump up. |
==How to tell a hydraulic lifter from a solid lifter== | ==How to tell a hydraulic lifter from a solid lifter== | ||
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