bcampanelliGetting on the freeway and at full throttle I get a bad backfire and sputter and no power. Back off the throttle about 1/2 inch
and stops and runs normal. At full freeway speed and I floor the pedal, kicks into passing gear without any hesitation. Only seems to be from dead stop and full load. Any thoughts.
New plugs, new wires, distributor cap, rotor and module.
danascarCould possibly be a bad coil if you have one, that breaks down under the heavy load. Just a thought.
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DanT
Adams' Apple
You list a cap, rotor, and module, but no coil? Could certainly be a coil failing, but I would also suspect a carb issue.
Joel Adams
C3VR Lifetime Member #56 
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"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
Mark LairdI had the same problem when I had my 68.. All I had to do was replace the manual fuel pump with a high performance one..Problem went away...Kept breaking down at full throttle..Old timer told me to replace fuel pump with high performance one and the problem was solved.
Good Luck!
