Low vacuum question

fishy68,
The reason for the overlap being so large is the fact that the cam has a 108 lsa and is likely to be advanced 4* so the intake centerline is 104 and the exhaust is 112 with most centerlines this low the overlap increases, the further back you go the less the overlap would be on centerlines. For example a cam with 112 lsa and 112 intake centerline would have 60* of overlap. What the overlap does is give better driveability the less it is and the higher it is the racer the cam becomes and the more mods to the engine has to be done.


BJR Racing