These PTV numbers look accurate?
These PTV numbers look accurate? I just measured PTV on the intake side, first time doing it. In the past Ive just degreed the cam and called it good. Looking at the minimum PTV my numbers seem kind of high, but maybe not. Can someone tell me if these look normal or not?
Engine details:
346
-3 dished pistons
LS9 head gaskets
243 heads milled .010
230/237 .600/.610 114+5 cam
PTV numbers:
15* BTDC = .458
10* BTDC = .409
5* BTDC = .361
TDC = .325
5* ATDC = .302
10* ATDC = .296
15* ATDC = .302
I used an adjustable pushrod, light checking spring, set stock rocker to zero lash, solid lifter.
Engine details:
346
-3 dished pistons
LS9 head gaskets
243 heads milled .010
230/237 .600/.610 114+5 cam
PTV numbers:
15* BTDC = .458
10* BTDC = .409
5* BTDC = .361
TDC = .325
5* ATDC = .302
10* ATDC = .296
15* ATDC = .302
I used an adjustable pushrod, light checking spring, set stock rocker to zero lash, solid lifter.
Last edited by schmendog; Jun 10, 2014 at 02:40 PM.
