Disappointed in my 383 on the Dyno

Rassnasty82 said

I thought if it was alumn it was an OD but i am not sure. What i can tell you on the highway going 60 mph my rpm's are around 2k

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If you're looking at the shifter ears on the outside of the transmission and the one all the way towards the front is pointed upwards as opposed to the other two it's likely it's an overdrive... And two grand at 60 MPH with 391 gears and a reasonably sized tire like 28 in or so it's likely an overdrive...