VT Engines

KyleH said:
You're not going to make 500 reliable HP on a stock bottom end and the only real argument against turbos (turbo lag lol) is fabrication cost/difficulty. They will make boost sooner than a centrifugal and make more power and torque than a roots.
Click to expand...

Hence why I'm looking at a forged big bore stroker kit. And (again) I just am not a fan of boosted cars. It just seems like cheating to me. Tomato, tomahto.

KyleH said:
Lastly how much power is your friend making? Unless hes put serious money into that 347 with a new block, or was smart/lucky enough to get a Mexican block which he most likely was not; he's probably not making 450+WHP (or wont for long when that block lets go.) My point is with this car trying to use power to get your car quick is more expensive than using chassis and drive train mods. You can make this car drop almost 2 seconds with drivetrain and very simple engine mods.
Click to expand...

His expectation is 425 hp with the Probe 347 stroker kit, heads, cam, etc. He is aware of the inherent weaknesses in the 302 block. I can't blame him for not wanting to drop 2 grand on a Dart block.

KyleH said:
In case it isn't obvious, the reason you don't want to do it with power if you don't have to is because you'd need a built motor and built transmission just to handle the power. With mostly drivetrain and a few engine mods you don't need to shell out all the money for that stuff.
Click to expand...

Nobody said I was planning on using the stock drivetrain.

Dude, I'm not sixteen and this isn't my first car.

T-man, what car was this? I'd be interested in seeing that.
 
Yea but you think boosted cars are "cheating" and you don't want 5:10 gears in your mark so how much you know is pretty suspect right now. (Only giving you a hard time, see the signature)

That said I misread your post at some point and thought you wanted a blower and forgot about the OP and second post so my bad.
 
Royston said:
T-man, what car was this? I'd be interested in seeing that.
Click to expand...

The motor is here http://www.fordracingparts.com/parts/part_details.asp?PartKeyField=6787

There is more power though in going with a 12:1 compression ratio and I'm pretty sure the heads aren't MAX ported... There also might be better after market cams.

Here's a 5.0L DOHC motor putting out 550hp in my dream mustang.

http://www.fordracingparts.com/mustang/herocard3.asp

It would probibly be cheaper to build one yourself.

I have the SHM book for the mod motor and it has a build for a N/A 500hp 4.6L if you want me to list the parts.
 
T man said:
I have the SHM book for the mod motor and it has a build for a N/A 500hp 4.6L if you want me to list the parts.
Click to expand...

I would like that. His 4.6 performance book seems to be no longer available on his website.

Chapters.ca sells some used ones for two to six times the price. :rolleyes:
 
99-01 cobra (just with c heads).

99-01 cobra (just with c heads).

It still has a crap load of info. You can't blame him for advertising his company :p

Short block: 5L (3.70in bore), forged rods, pistions, crankshaft, 12:1 compression.

Cylinder heads: Ford Racing FR500 or Ported 99-01 cobra

Head Gaskets: SHM MLS 3.70 bore

Head Studs: ARP 256-5701

Camshafts: SHM road-race 0.385in lift, 228 duration @ .050in lift

Pulley: Steeda 701-0001

Intake manifold: Ford Racing FR500 or SHM short runner

Air filter: K&N E-0945

Fuel Pump: (Just do the walbro 255LPH)

Fuel Lines: -8AN feed, -6AN return, High flow fuel rails

Fuel Injectors: ford racing 42lb/hr M-9593-F302

Mass Air: Ford 90mm 1L32-12B579-AA

Headers:1 3/4 to 1 7/8-in long tube

X-Pipe- Custom 3in

Cat back- Custom 3in

Axle ratio: 4.10:1-4.56:1

With stock '99-'01 Cobra heads and intake, this package makes 420hp. With the FR500 or a proted set of '99-'01 Cobra heads and the appropriate intake manifold, 500-plus hp is available. The camshaft is designed for road-race applications, so the powerband extends from 4,000 rpm to 7,200 rpm.
Click to expand...

There are a lot of other cams that you can probibly make more power off of if you'd want to drop down to an 11:1 compression.

The book also has the cfm of all the stock mod heads produced from .050" lift to .500" lift. Dennis Reinhart in florida put a set of ford GT heads on a turbo charged marauder which out flow the FR500 heads from .100" lift on up... But the guy needed a custom hood made to fit the heads.
 
Last edited:
The 03 cobra head out flows the FR500 after .350 lift intake. It bottlenecks.

It has a better exhaust port though.

I was to lazy to read all the info on that site. haha :p
 
I wouldn't bother replacing the B-Port heads, they flow real well with some porting once you get up in the higher RPMs.
 
Roadboss said:
Nothing like legally going thru a school zone with the tac half pegged.
Click to expand...

No kidding. :rolleyes:

Regarding the B heads:
"Through the years these heads have proven themselves to be excellent high rpm (8000rpm+) performers—mainly in power adder applications--since their tremendous combined intake port cross sectional area and volume (when combined, a full 55cc more than any other 4.6L head design) provide for exceptional power production in the upper regions of the tach."

8000 RPM cruiser? No thanks, I didn't buy a Honda :wink:
 
Last edited:
You must log in or register to reply here.
Back
Top