My old '71 340 Cuda (hot street car) when I bought it back in 1980>
All stock motor, 750DP, .484/284, 727
B&M super Holeshot,
small tube hdrs,
all stock suspension (used to lift drivers front tyre)
3.55's, M&H 8x26's
MSD6A, NGK5's, 36 total on leaded 97ron
ran high 13.2's@101+ = 301 actual fwhp with all ancillaries, I got it down to 13.1's with some tuning if I remember correct?
You could say thats not a lot of hp for a 340 with that spec but the no's are from the 1/4 not a dyno, it was an all steel car@around 3550lbs with me....
So trying to get an actual 266fwhp on track from a teener with 8:1/manifolds, cam+J heads is gonna be hard work with just a tune compare it to a bone stock '72/'73 340@245hp. But its gonna be fun trying, thats what its all about. A 650DP would certainly help a 1/10th, but its got to happen as it is now.