Pushrod problem with Speedmaster heads
All 'LA' heads with the exception of the 308/302/714 castings all have smaller push rod hole for the flat tappet cams they used.
Grind the push rod holes top and bottom like an hour glass..basically the top toward the valve cover rail and the bottom toward the chambers. Here are my '70 J heads I run a roller cam with.
This.
All 'LA' heads with the exception of the 308/302/714 castings all have smaller push rod hole for the flat tappet cams they used.
Grind the push rod holes top and bottom like an hour glass..basically the top toward the valve cover rail and the bottom toward the chambers. Here are my '70 J heads I run a roller cam with.
