[Mr. Chevy]

Sam, Power Blaster always worked for me but it's not always a 100% remedy... Saturate the bolts/area and let it sit overnight and then try it..

OR

I'm not sure which manifold bolts you are referring to.. But
you could try putting a little heat on them.. Just have to be sure you don't snap em' off when screwing them out, GO SLOW.... Then it's drill out time!!! Been there done that.... [img]<<GRAEMLIN_URL>>/no.gif[/img]

Rich