1978 3.7 / 470. Alpha one prop size?

[twhrider2]

Not sure spare, have not had it in the water yet. PO "said" would do 38 on gps but not sure of rpm. May be another unknown to look into when splashed.

[Destroyer]

Originally Posted by twhrider2

Not sure spare, have not had it in the water yet. PO "said" would do 38 on gps but not sure of rpm. May be another unknown to look into when splashed.

I gotta agree with Spare on this one.. 21p is an awful steep pitch for that engine. I'd think a 19p in Alum or a 17p in SS would work better.

[surchin]

Thanks for intel! Update. Prop not stamped with any sizes. Existing prop is alum. Out drive is pre alpha can't find model no on it.