500+ horse 440

'70 challenger brkt car, no guesses/dyno runs or glossy quoted top end packages, this is from the track and goes on weight/mph.
446ci, 10.8:1, 300cfm MCH ported Eddy heads, 1.6 rockers, .580 SFT cam [email protected]
M1, port matched cleaned up, 830cfmDP
1.7/8" hdrs, 3700lbs+@line 11.06@121, 1.54 60ft's = 540>550fwhp...street/strip car

My old school build, 440-6pk bottom end, BV 906 heads (250>260cfm?), Team G, 850DP, .650/[email protected] sft cam, 9.7:1cr
2" hdrs, 10.71@125@3300lbs@line = 511>515fwhp...this was a race only car.

And the last, 440, 12.5:1, MCH ported Eddy heads, [email protected], DC. 590 sft, [email protected], Victor intake, 1050 Dominator, 3150@line, 10.12@132 = 600fwhp...........just for reference.