Sorry, the QFT 950 and the Holley HP Ultra 950. 

My vote would be the Pond block.  I'm doing a TP build right now with a Pond cast iron block and Gary Vere's TP heads, and have done 4 other Pond block builds in the past 2 months. 

I use a lot of the Pond stuff....mainly aluminum, but the cast iron blocks are super sweet as well and will hold tons of horsepower.   I posted a pic of the cast iron block over on the other forum...just had Robert deliver me one last week.   The cast iron blocks and the aluminum blocks (Pond) are both the same price.  Both come with main and head studs and a set of cam bearings.

A Scat crank and rods would be my weapons of choice.  A cast crank will hold up to that horsepower, but Scat has the forged pieces out as well if you want some insurance.   I predominantly use the Scat pieces and have seen nothing but good quality out of them.

I've used one Dove block, and it was a "vintage" one.  It was very rough on the outside, but machined up well. 

I see the one machined bolt.....these are pressure fed like stock....not fed through hollow pushrods.......Cory

They will feed either way.   

It depends on how your bellhousing is set up.  If it uses the wire clip, then you may have to resort to a factory fork.  If you can use the steel tab in the pivot, then McLeod and some others offer new clutch forks that will work just fine.

A TKO 600 will withstand a lot of abuse.  They are rated for 600 lb-ft of continuous torque, not a peak torque for a few seconds.  They can also be built to hold about 700 lb-ft with just a few upgrades.

With that being said, they have inherent detail flaws, just like anything else.  Tolerance stacking on gear cones and synchronizers allow for less than desirable shifting at higher rpms.   We modify the gear cones, along with replacing the shift finger, and this clears it up. 

It's certainly easier to get the horsepower out of the big inch motors.  However, I've done (4) 482-487ci FE's in the past 6 weeks and I understand when guys want something a little different.  So if they're willing to go past the "normal" street build and spin the engine up a little bit, the smaller strokes can work out. 

However....hitting 700hp with 427 cubes would take a lot of specialized parts and experience.  At 1.64 hp/ci, the normal street parts won't cut it.   

If I could offer a suggestion, there are a couple of 3.980" stroke crankshafts out that you can buy.  Scat makes a cast crank in that stroke, and RPM makes a steel crank in that stroke.  In using that crank, you still have the sense of a factory Ford combo and the extra cubes will absorb some of the velocity and port volume issues with the TP heads.  To hit 700hp with that bore/stroke combination would still be an undertaking in my opinion.

Brent Lykins
B2 Motorsports

New member here....

Thanks to Jay for the approval and for creating the site.  I hope I'll be able to contribute to the pot of information.