It is time for adjusting the valve train. The engine fires in the following order : 1 - 8 - 4 - 3 - 6 - 5 - 7 - 2. I´m starting by turning cyl 1 in TDC compression stroke (intake and exhasut valve are both closed). Adjusting both roller rockers on cyl 1 to zero lash and then a 1/2 turn preload before nut on roller rocker is locked. Then turn engine clockwise 90 degrees and cyl 8 is TDC compression stroke. Do both roller rockers on cyl 8. Continuing this and all cylinders a done by 720 degrees on crank.
This is a blog about stroking and rebuilding a LT1 engine for a Chevy Corvette C4. The project commenced in winter 2011 and finished by summer 2012. The car was sold january 2013 and it is still on the street.