> When traveling on the freeway my power dies out at about 70
> MPH it fourth gear. <snip>
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>I was thinking, like Mike, that it was fuel starvation. Or carburation. Or
>coil overheating. Or weak valve springs. Certainly, adjusting the fuel
>mixture didn't help either way (leaner or richer). Valve clearances set at
>10 thou. Fuel pressure was correct. Float level set properly.
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You should be able to get 6000 RPM easily my stock GT6+ has no trouble at
all pulling at speed. The only difference from stock was the replacement
of the stock dia exhaust tubing with 2" exhaust tubing. The rest of the
system, manifold, muffler is as original. You might try to see if you have
a restriction of some kind in the exhaust system somewhere. If you can't
get the gasses out, you can't get the fuel/air in -
Barry Schwartz (San Diego) bschwart@pacbell.net
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