Originally Posted By fast68plymouth
Originally Posted By 65Fury440
Originally Posted By csk
This is the same 440 with the cam I run in my street car 512 cid
Hyd roller.


Surprising for me to see the cam in your 440 made more HP than in your 512.

I D/Led Dyno 200, trying to bumble through it now.


Heh heh heh........

You’ve just discovered the big flaw that’s in many engine building simulation software programs.

I built a 446 and a 493 that were very very similar to each other besides the displacement.

On several engine sims the 446 showed higher output.
On the real dyno the 493 was clearly better...... and not by a small amount either.


Yep I have found the same as you on my old dyno, was trying to show the rpm difference ,same cam & more cid. & as you know it is just a Sim.:)

1968 Charger COLD A/C Hilborn EFI
512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim
2020 T/A 392 Stock 11.79 @ 114.5