422 dyno fail

crackedback said
And that MM deal is total BS... They can print it, doesn't make it so. That is the one dyno test I'll call BS on every time.

That's a 1hp/CI build roughly. It might make a true 350-355 hp. Been around too many of them and that thing never saw a strip to prove it out. Like many of the dyno engines from MM. MPH always a disappointment.

Definitely something wrong with the numbers from the OP's mill. They changed the distributor and a spacer and it picked up bunch... HMMM One thing I'd guess at is not at WOT, but, that is one of the things you definitely verify prior to making pulls.

I had a 360 with ede's 270 @.500 and a smaller HR cam, victor, 950hp, hooker 1.75 headers and it made 130 more HP than the OP's all the way to 6300.

You may be right about MMs dyno numbers. Bigger numbers may sell more magazines. But it looks like we agree on one thing. The 422 should have made more power. I particularly liked your WOT comment. THAT HAPPENED TO ME. I've had my 69 340 Barracuda for about 35 years now. The first time I built it, I had a one notch over stock cam and headers. When I started to drive it, it felt more like a 318 with a 4 barrel. I don't remember why I thought to look, but the way I had installed the linkage, I only had about 75 or 80% throttle with pedal to the metal. After a quick adjustment, it ran way better.