The back story on my engine is it always had low vacuum @ 11inches. I had 150 psi in all cylinders until #1 took a dump. I put some oil in the cylinder and got 150 psi then back to zero. The valves were moving so I figured there was a problem with the piston. Put air into the cylinder after backing off both valves. Hear or felt nothing through the tailpipe or carb or intake but I did hear airflow into the crankcase. Today I pulled the engine and broke it down. Found the valve seats and guides were good. I put thinner in the cylinder and got a slow drip which was the same in all the cylinders which makes me think the rings are not damaged. When I pulled the cam I found the first lobe was wiped. Figured that might be the reason for the dead hole.
I was told the engine was rebuild about 10K miles ago. The bore is std (4.000) with no lip at all. Crank is .010/.010. (Clevite 77 bearings) Rods show signs of being balanced (grinding on the caps). Looks like a billet roller chain with multi index crank sprocket. The heads are Aussie 2V with hardened exhaust seats and new valves.
I have a Comp Cams 260H cam I plant to install along with a 525 Road Demon carb, tri-y headers and 2 1/4 dual exhaust and an AOD conversion. Not looking for neck snapping power. Instead I want a car I can take to the road for long trips. I promised my son we'd hit the road this summer. I'm planning on 3,000 miles so fuel efficiency is more important than all out power.
I'm looking for opinions on cams, intakes, carbs ect. Am also divided between breaking it all down and install new rings, bearings and oil pump but since it had good oil pressure and I think a high volume pump to leave the bottom end alone. Opinions ?
Thanks
Leon
I was told the engine was rebuild about 10K miles ago. The bore is std (4.000) with no lip at all. Crank is .010/.010. (Clevite 77 bearings) Rods show signs of being balanced (grinding on the caps). Looks like a billet roller chain with multi index crank sprocket. The heads are Aussie 2V with hardened exhaust seats and new valves.
I have a Comp Cams 260H cam I plant to install along with a 525 Road Demon carb, tri-y headers and 2 1/4 dual exhaust and an AOD conversion. Not looking for neck snapping power. Instead I want a car I can take to the road for long trips. I promised my son we'd hit the road this summer. I'm planning on 3,000 miles so fuel efficiency is more important than all out power.
I'm looking for opinions on cams, intakes, carbs ect. Am also divided between breaking it all down and install new rings, bearings and oil pump but since it had good oil pressure and I think a high volume pump to leave the bottom end alone. Opinions ?
Thanks
Leon