If you are building your Ford Modular Aluminum block engine these timing guide pins custom made by Accufab are a must. These fit all Aluminum Ford Modular 4.6L, 5.4L, and 5.8L engine blocks. The factory guide pins shear or break under extreme load and high horsepower applications. Prevent engine failure by adding these to your engine block. Requires drilling and tapping block for installation, must be done by a professional machine shop. JDM Engineering uses these on all of their Cobra Jet race cars as well as in house built GT500 Mustang aluminum block engines.
Fits 2011-2014 Shelby GT500 Mustang 5.4L and 5.8L Aluminum engine blocks.
