Hughes big mouth heads

pittsburghracer said
Just for example my buddy’s engine (408) made 638 horsepower with a set of heads I did for him. I was really restricted on chamber size so I wasn’t really happy with my flow numbers maxing out at. [email protected]. With my ported Super Victor intake it knocked that number down to 302. Matt ran [email protected] at 6400 rpm in some terrible weather conditions. One conversion chart I used said at 3200 pounds it made around 596 and the other chart said 611 so with some half decent weather it should be close. Slightly over .650 lift cam. You know me and horsepower numbers but I was bored.

I’m no wizard at the HP guessing games myself.
We just get how stuff is put together and works.

Ironmike said
I think if it was possible(reliably), you wouldn't see guys using exotic W5 W9 stuff to get there. I mean, once you invest in a race block why even bother with anything done by Hughes.
Not a cheap shot, but a shot none the less. I fell prey to them. Once.

FWIW, do not consider a W5 as an exotic part. They are like an aluminum W2 w/rectangle ports. It has the same attachment to the block as a standard head and slightly wider intake holes which are easily modified to fit a standard intake. The rocker arms use stands are the only departure from a stock system. MP/Crane used to have a bolt on rocker arm set up.

If you move to a TD/Jesel set up, mounting them gets a little weird. TD wants you to move the bolt hole attachment point by redrilling the head. That’s where it’ll suck a bit. I would want to find an aluminum stud to cut to length and lock tight in before redrilling.

The W-7-8-9 are the exotic heads. There a good bit removed from stock.