Replacing the throttle body base gasket 5.7 Chevy. Chevrolet 350 TBI. OBS Silverado

Replacing the throttle body base gasket on the 350 Chevy.
@funjunkiegarage
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[@curtiswells4101]

maybe the preheater ?

[@funjunkiegarage]

Not familiar with a preheater
I'll have to investigate that.
Thank you for the input.