1980 camaro boggs down in the high end of 2nd and 3rd gear

my camaro has a 305 eng. 350 turbo trans with shift kit and it boggs down at the top end of 2nd and 3rd gear when you get into it... it boggs out about 3500 in 2nd. it idles fine runs fine but boggs down also i can't go
more that 75 its starts to bogg down again. need help
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i found the problem it was the fuel filter going into the carb.
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