[Rico]

As a precaution I had a compression check done; 389 tri 4sp
results as follow:
#1 200
#2 200
#3 185
#4 210
#5 190
#6 200
#7 187
#8 190

I had a comment that it was a little high?

I'm am a novice at this stuff.

What type of gas should I be running?

Thanks,
Ric

[Schurkey]

If we assume that the compression gauge was accurate--you're into PREMIUM fuel territory there. But then, it's a 389 Tri-power. You knew that already.

In general, 150--170 is more common; but it all depends on the mechanical compression ratio and the cam timing.