327 Viscocity

I have a dumb question that someone will jump all over. I recently purchased a '68 Camaro with the 327-2V engine and need to change oil. The engine is solid and doesn't appear to consume any oil, so what should I use. I don't have an owners' manual yet to look this up myself.:banghead:

Probably 5-30 or 10-30. I'm not really sure though.

use a 10w-30 or a 10w-40 use the 40 if it is hot weather

Thanks for the input. I used 10W-30 guessing with a solid motor and summer only driving it should work well.

unless it's been rebuilt I'd recommend Castrol GTX High Mileage, it's the only thing I use in any of the vehicles I own (probably because they all have like 150K plus)