91089660SHORT SBC LS Mock Up Engine Swap Dummy Short-Block, No Heads 91089660-SHORT

info on making your LS swap project a success!Not sure if your LS is a or IV, Our will help you determine just what you have!Installation TipsThe special M11 nuts included are only to be used when installing real cylinder heads to the mock up short blockCylinder head are not supplied, when mounting real cylinder heads you must use your stock or to mountThe mock up cylinder heads included in the long block option have an adjustable valve cover height to simulate LS7 cylinder heads vs all other LS headsAll included hardware is metric, including M6 and M8 and nuts for the short block and additional M8 and M10 for the long block optionTo resist flash rusting we recommend coating the sections in a light coat of or other product, or they be clear powder coated or clear painted