Loss of power with new cam

Installed a Competition Cam as part of initial rehab of newly purchased 1965 Dart GT with a 1970-1972 Slant Six.

A new timing chain set was also installed and lined up dot to dot at TDC as stated in the instructions.

Ignition is converted to Electronic type.

I have very little background on how vehicle performed before engine was broken down, head/valve job and cam install/carb rebuild were completed. It was running but only droven @ 1/2 mile before loading on a trailer to take home after purchase.


Manufacturer's Part Number: 64-240-4

Product Line: COMP Cams High Energy Camshafts


Summit Racing Part Number: CCA-64-240-4

Cam Style: Mechanical flat tappet

Basic Operating RPM Range: 800-4,500

Intake Duration at 050 inch Lift: 215

Exhaust Duration at 050 inch Lift: 215

Duration at 050 inch Lift: 215 int./215 exh.

Advertised Intake Duration: 252

Advertised Exhaust Duration: 252

Advertised Duration: 252 int./252 exh.

Intake Valve Lift with Factory Rocker Arm Ratio: 0.435 in.

Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.435 in.

Valve Lift with Factory Rocker Arm Ratio: 0.435 int./0.435 exh.

Lobe Separation (degrees): 110

Intake Valve Lash: 0.010 in.

Exhaust Valve Lash: 0.012 in.

Timing is set at 5 degrees before TDC. Car drops significantly in power on any incline but seems to run OK, but far from great, on the flat.

The engine is showing about 15" vacuum. No leaks are noticed.

Any ideas out there in FABO land on what I need to check to resolve the loss of power issue?

Carb is recently rebuilt. Engine revs great when transmission in in Park. Carb linkage seems OK. Valve Lash is checked and rechecked.

I've run out of ideas, admit my novice category and am now asking the experts for help.

Thanks