pirana1969 Posted December 31, 2015 Report Share Posted December 31, 2015 From our General Manager Rob Sanderson After seeing or talking with other local tracks they went to .450 lift rule which we had, before 2016 rules came out. I decided to go ahead revert back to the same rule on lift after much thought. Here is the read on it. Camshaft and Lifters Hydraulic Camshaft and hydraulic flat tappet lifters only, no hydraulic OEM roller lifters. Rhoads, Variable Duration or “Bleed Down” lifters are not allowed. Maximum valve lift of .450 inch measured at steel retainer. Solid lifter will be used at tech for testing purposes. Maximum push rod length of 7.800 inch. OEM firing order cannot be changed thru cam design. GM firing order 1-8-4-3-6-5-7-2. Engine must have a minimum of 15 inches of vacuum at 1000 engine RPM. No tolerance No vacuum canisters allowed, brake booster will be disconnected and capped during time of vacuum inspection. Attached Files 2016 SOS Pure Stock Rules.pdf 115.95KB 7 downloads Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.