High pitch noise

[ddanemann]

I just purchased an 00 maristar 230 with the vortec engine. it has 210 hours on it, It runs like a champ but it makes this high pitch almost turbine like noise... is this normal?

[Engine Nut]

Which engine do you have, the LTR (Multiport EFI) ot the TBI (Throttle body EFI). Some of the LTR engines made a noise like that and it is normal. The TBI generally didn't make any unusual noises. They both "whine" a little in reverse if you have a 1:1 transmission.

Engine Nut

[ddanemann]

Oh... is that why

It is a multiport injection.