hey yall im new here i have a 98 silverado 5.7 well on the warmer days 75+ after a half hour or so my pick up just dies now after a couple minutes it will fire back up but if i mash on it it sounds like its bogging out now i have checked the fuel and spark both seemed good but im at a loss any help or input would be nice

 

Welcome to the forum...
Any codes setting?
How many miles on her?
How does the fuel pressure look?
Is the air filter clean and the snorkel unobstructed and not kinked or bent?
running rich? catalyst clogged?



Throttle position sensor bad?
MAF sensor clean?
bad data from an O2 sensor once it goes into closed loop after warm up...?

Just some ideas to start with....