Timing and cam gears 91-92 sohc
Hey all . i have a 91 si motor.. and it is turbo.. and the only way i can get -20 vac is to advance the cam 1/2inch... what i need to know is what will the vac gauge do if it is too retarded... .. and ARE THERE 2 different Cam Gears for D-series motors. or 2 cams...with the Key if different spots..??????
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