Help me get 700hp out of a 482

[N2950H]

Hey guys, new member here but have been lurking for a while and reading all I can.  I'm building a 482 street motor for a 63 Galaxie boxtop and I'm hoping to see 650-700 HP on pump gas while maintaining decent street manners.  Being a 90% street motor I'd like to see max power at or below 6500 RPM.  This is where I could use some guidance in selecting some well balanced components.

I have purchased no parts yet, but this is my plan:
Bear Block (iron)
Barry's rotating assy (4.250 x 4.250)
Barry's CNC ported FElony heads
2x4 intake (undecided, perhaps BBM Tunnel Wedge?)
Carbs (undecided, preferably something looking relatively original)
Cam (undecided, will probably select this last)
T&D race rockers
Headers (absolutely no idea)
C6 trans

Some questions I have related to parts selection:

1)  I want to select an intake (hopefully 2x4 config) that takes full advantage of Barry's CNC heads but is also street friendly.  Are there any proven combos out there making close to 700 HP with around a 10.5 CR?

2) I have to believe whatever intake I settle on will need a bit of work to match those heads, is that something I can entrust to any decent shop here in the Pacific Northwest or is there a go-to person/shop for this?

3) I'm an EFI guy looking to mess with carbs for the first time in 20 years.  How does one even know where to start on selecting a carb size?

4) Lastly, am I asking for too much with the pump gas restraint?  In the end it's just a street car and the 700 HP mark is just for bragging rights.  If I need to "settle" for 600 HP it won't be the end of the world.  If 600 is doable with Barry's as-cast heads, I would think I could get to 700 with the CNC version and the proper intake/carb setup.

Appreciate the guidance.
Chris

[My427stang]

Here is 660-ish version, another 50 will take some compression and RPM.  Maybe consider more cubes?

http://fepower.net/simplemachinesforum/index.php?topic=2670.0

and one with a little more , 680-ish, from Brent

http://fepower.net/simplemachinesforum/index.php?topic=2688.0

[andyf]

Here is a 482 inch FE that made 700 hp on pump gas. The big solid roller might not fit into your plans but it sounds like the rest of it should work for you. This is an EFI engine. You can probably hit the number with carbs but EFI has a lot of advantages.

http://www.hotrod.com/articles/dyno-tested-make-700-hp-trick-flows-new-fe-heads/

[Barry_R]

Dual quad and single quad "as cast" 482 combinations have gone over 600 several times in streetable trim.  A recent higher compression Shelby block version got up over 640 as cast.  The CNC variation has a 70+ cfm potential gain and will support 700HP with the right cam and induction package.  Hitting 700 with a 6000 RPM pump gas package will take some effort - but its not out of the question.  My 700ish HP 433 EMC engine is cool proof on concept - but not a valid comparison because of the extensive modifications...

[N2950H]

Thanks guys, and Andy I did see that Hot Rod write up on the 700 hp motor using the new Trick Flow heads.  For now I'm trying to shy away from parts that are brand new to the market and stick with what is tried and tested over the years.  It's definitely piqued my interest, though.

Barry, I actually emailed you a couple days ago on this topic but I know you're a busy guy and I don't want to take up your time with a million questions.  That said, given my criteria of a streetable motor on pump gas, I would be very interested to hear your recommendations for a cam and induction package to go with your CNC heads which I will be ordering soon.

Cheers,
Chris

[mbrunson427]

Is there a reason you want to keep the bore limited to 4.25"? If you run that block out to 4.35" you're still giving yourself room to refresh it later. That'd help you sneak up on your 700HP goal. 

[BattlestarGalactic]

Friend just built 462, TF heads, roller cam, pump gas motor and made 600 hp.  Going in street '69 Mustang.

My 462 made 625 with 12.5:1, flat tappet, 20 yr old Eboks with hand porting,  tunnelwedge.

[N2950H]

Is there a reason you want to keep the bore limited to 4.25"? If you run that block out to 4.35" you're still giving yourself room to refresh it later. That'd help you sneak up on your 700HP goal.

I have been considering either boring it out more or going with a 4.375 stroke (or both), but I'm trying to fight the urge to do anything crazy just to hit a magic number.  Can anyone tell me if there are any issues with maxing out the stroke to 4.375, whether it be added stress somewhere, block clearancing, oil burning, etc?

[N2950H]

Meh, from what little reading I've done on the 4.375 stroke I think I've already talked myself out of that.

I am considering the idea of 506ci vs 482 if I punched it out to 4.350, I just don't know if I want to use up that much of the block before even firing it up.  Realistically that would probably only net me 20hp or so, right?

[Dumpling]

Note the original post gave a range starting at 650 HP .

Sounds doable, maybe an electric waterpump? Electric fan(s)?

[CaptCobrajet]

I'd make it a 520.  I start them at 4.345 bore and that leaves .030 to hone many times before you even get to 4.375.  10.5:1, Street Pro Ports, BP baby roller.....700 no problem.

[N2950H]

Note the original post gave a range starting at 650 HP .

Sounds doable, maybe an electric waterpump? Electric fan(s)?

Correct, there is nothing wrong with 650.  Just trying to figure out what I'd need to do to hit 700.  I do plan to use an electric water pump.

[N2950H]

I'd make it a 520.  I start them at 4.345 bore and that leaves .030 to hone many times before you even get to 4.375.  10.5:1, Street Pro Ports, BP baby roller.....700 no problem.

That's assuming a 4.375 stroke, correct?  You do that on street motors with no issues?

[CaptCobrajet]

No issues.......if you are working around limited compression for pump gas, the inches are your friend.  We just bored two BBM blocks for 520's last week.  It's a nice combo 4.345 bore X 4.375 stroke.  It will tolerate more duration on the cam, which you will need to make your goal.  Whatever heads you use need to be really efficient.  You want a big street engine to be responsive, right under your foot. Smallish,  high flow, high velocity ports........

[N2950H]

Thanks, Blair.  I don't want to buy the wrong parts so I'm trying to translate the recommendations for "the right combo" and "efficient combo" into an actual parts list.

I'm leaning toward starting with Barry's CNC heads and a BBM Tunnel Wedge intake, then I'll be looking to someone much more knowledgeable than myself on hydraulic cam options.

Will this intake need to be worked over to match up to Barry's heads?  If so, who do you guys trust to do that work?