Hey, can someone here crunch some #'s for me on DD? I have my first show coming up this weekend and I'll feel kinda dumb saying, "I really have no idea."

- 1986 5.0L H.O. engine (stock '86 flat-top pistons)
- E6 heads -- thermactor bumps removed, port & polish, skirts ground down
- Custom cam: .491/.471, .219/.209 @ .050, 112 deg sep
- Weiand 289 tunnel ram intake (P/N 1988)
- sync'd dual Holley 390 cfm vac secondary carbs (P/N 8007)
- Pertronix ignition
- MSD Blaster II coil
- Full-length 1 5/8" headers, Turbo mufflers, 2.5" pipes, no cats

And if you could run it with GT-40 heads, too; I'd be interested in the difference -- I have an opportunity to pick up a set on the cheap.

I'm thinking about 250-275 hp.

Thanks in advance,

- Joey