SBC hydraulic roller. Valve events at .050 listed on cam card:
IO 8º BTDC
IC 40º ABDC
EO 48º BBDC
EC 0º ATDC
As found:
IO 7º BTDC
IC 46º ABDC
EO 47º BBDC
EC 6º ATDC
Another thing, This is suppose to be a 228/228 duration at .050 cam. It measures 233 on both the intake and exhaust. What is the deal with that?
Specs on cam is 228/228 at .050 280/280 at .006 110LSA 4º advance. install intake lobe to 106º centerline.
7+180+46=233 intake
47+180+6=233 exhaust
Also done the Intake centerline method and got 109º which tells me I need to advance the cam 3º to put it at 106
I am very confident I have found true TDC. I am using a fixture that fits in the lifter bore with indicator that reads directly off the lobe for the degreeing process.
IO 8º BTDC
IC 40º ABDC
EO 48º BBDC
EC 0º ATDC
As found:
IO 7º BTDC
IC 46º ABDC
EO 47º BBDC
EC 6º ATDC
Another thing, This is suppose to be a 228/228 duration at .050 cam. It measures 233 on both the intake and exhaust. What is the deal with that?
Specs on cam is 228/228 at .050 280/280 at .006 110LSA 4º advance. install intake lobe to 106º centerline.
7+180+46=233 intake
47+180+6=233 exhaust
Also done the Intake centerline method and got 109º which tells me I need to advance the cam 3º to put it at 106
I am very confident I have found true TDC. I am using a fixture that fits in the lifter bore with indicator that reads directly off the lobe for the degreeing process.