Another guess the Dyno Numbers

318willrun said
411 hp/ 407 trq ....

Do we win anything ?? :)

ch1ll said
Isn’t the compression a little high for iron heads and 91 octane?

I’m going to say 425 hp 400 tq.

Nope. I’m running 10.2/1 2.02 J heads on my 340 that are slightly ported on 91 non ethanol pump gas with NKG BRK6E plugs with no problems other than a shitty Cloyes true roller timing chain...