85 silverado 454

have a new air filter fuel pump fuel filter and when the engine gets
warm and if I am going up hill the engine has little or no power even
with the pedal to the floor..it doesnr rev high just like as if no
gas. This doesnt happen in the winter??

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"paul1971" <none DeleteThis @000.com> wrote in message
news:1203848_1dc88e054bc7ddd91cf307ad348c80f7@autoboardz.com...
> have a new air filter fuel pump fuel filter and when the engine gets
> warm and if I am going up hill the engine has little or no power even
> with the pedal to the floor..it doesnr rev high just like as if no
> gas. This doesnt happen in the winter??
>
> --
> Posted at author's request, using moderated http://www.AutoBoardz.com
> interface
> Thread archive:
> http://www.AutoBoardz.com/85-silverado-454-ftopict247551.html

Could be a plugged catalytic converter. I encountered that same symptom
with a 1981 Suburban 1/2 ton 454.