comoxian
Well-Known Member
Hey all, been a while since I've been active here.
My 408 in my 1969 Dart had issues, and I replaced it with the build I started for my 65 Dart years ago. I decided to increase the cam from what I had in the current engine. Just called the mechanic to check on status and he informed me that there seems to be an issue with the valves contacting the piston. The lift on the cam in the previous engine was 0.519, a Blueprint crate engine. The current cam is 0.565 lift. That's roughly a heavy millimeter more lift. Would that be enough to cause an issue? I've had nothing but problems with this since I started the rebuild 18 months ago (mostly waiting for parts, wrong/damaged parts). I really just want my car back on the road.
Heads are Edelbrock Performer RPM. Is there a thicker head gasket? Or is it a spring issue? I'm mechanically inclined, and a tradesman, but not up on high performance specifics.
Hopefully, someone here with more experience than me, or my mechanic, can shed some light and get me through this.
TIA.
My 408 in my 1969 Dart had issues, and I replaced it with the build I started for my 65 Dart years ago. I decided to increase the cam from what I had in the current engine. Just called the mechanic to check on status and he informed me that there seems to be an issue with the valves contacting the piston. The lift on the cam in the previous engine was 0.519, a Blueprint crate engine. The current cam is 0.565 lift. That's roughly a heavy millimeter more lift. Would that be enough to cause an issue? I've had nothing but problems with this since I started the rebuild 18 months ago (mostly waiting for parts, wrong/damaged parts). I really just want my car back on the road.
Heads are Edelbrock Performer RPM. Is there a thicker head gasket? Or is it a spring issue? I'm mechanically inclined, and a tradesman, but not up on high performance specifics.
Hopefully, someone here with more experience than me, or my mechanic, can shed some light and get me through this.
TIA.