jsimmons

Going to tune carb and put the beast on the dyno tomorrow. We'll finally be able to answer the question - "So, how much power are you making?"

Here are the car's particulars:

2012 Mustang:

- 427cid windsor
- Compression - 10.5:1
- Trickflow Stage 3 hydraulic roller cam with 1.7 rockers
- AFR 205 58cc heads
- QuickFuel 850 mech secondary carb
- Edelbrock RPM Air Gap intake
- MSD Ignition (Pro Billet distributor, 6AL2 control module)
- Headers with 1-3/4 primaries
- 3.73 gears
- Tremec Magnum 6-speed manual
- 93 octane gas
- Car has A/C and hydraulic power steering

The dyno is a Mustang in-ground unit, and we'll be taking it upt to a max 6500 RPM.

I'm hoping for *at least* 450 RWHP.

Anyone care to make any predictions about how much the car will actually make?

There will be videos of at least the first and last runs.

Stage_3

Very cool.
I am willing to bet you make more than 425 HP.
Good luck!

Siber Express

About time
410

silverstate777

I suspect your 427 will put down more torque than horsepower. My guess is around 475-525 foot pounds, and I look forward to the video.

TheReaper

396/430. A turbo would net about 600 hp.

jsimmons

Yeah, all the dyno runs I've seen on stroked Windsors results in more torque than HP (by about a 5-10% margin).

David Young

I guess 1 million horsepower and thats right before the dyno breaks and parts from it fly everywhere


431.7 Horsepower

MRGTX

Carburetor on a 2012...I LOVE that!

So how the heck do you plan to keep this thing registered?

jsimmons

I know people.

jsimmons

So far, we're at 439.3 hp, and 456 lbft. It's falling over at about 5600rpm. First thing we're gonna check tomorrow is the fuel pressure (to make sure we're not sucking the bowls dry).

Current settings:

Primary jets = 70
Secondary jets = 79
Accel pump cam is pink 2-in-2
Power valve = 3.5 (7.5-8 inches of vacuum)
Hi-speed air bleeds = 33
Idle air bleeds are 74 (I think)
Squirters = 33
Timing = 8 initial, 36 total

Any recommendations regarding fall-over would be welcomed.

I'll post the videos tomorrow.

Varilux

First of all, congrats on the numbers- and on having a unique 2012!

I looked up some info on the 427 and actually learned something...

The "FE" stands for "Ford Edsel" (vs. the "FT" 427- in which case, "FT" stands for "Ford Truck").

jsimmons

It's a stroked Windsor, not a FE.

Torino545

Except this 427 is a Windsor, not related to the FE, FT, or MEL v8's of the 50's 60's and 70's.. As for the mystery power drop. How do the a/f's look? Are the heads a known entity, did you buy them new? (Are you sure the springs are up to the task?)

Just checked specs on the stage 3.. Not really a ton of duration there for a 7.0. Where is the tq peak?

TripleBlack14

I really don't think horse pressure and torque are what's relevant here.

How can you possibly put a figure on the "holy crap is that thing ever fuↄking cool" factor? Dynos can't tell you that.

jsimmons

That's my way of thinking too - I actually didn't do this for the additional power (although I have to admit, the more power the better). I did it for a) the sound, and b) the unique nature of the combination of new car/old-school power train.

The only reason we put it on the dyno is to make the car run as well as possible, and to be able to answer the question everybody asks.

Torino545

It is definitely very high on the cool scale, just don't give the new school folks ammunition. "Look, 7 liters and my bolt on 5.0 will eat it alive, see, told you pushrods can't make power". For wasted potential, I'll never forget watching a 455 tempest with a 6-71 run 12's... (While a guy in the next lane ran equal times in a carbed, DOVE-C headed, 460 powered, full interior, 68 t-bird)..

TripleBlack14

Well, if the new school folks have to ask, then they wouldn't understand!!!!

When I go to a show or cruise nite in my '14 GT and park near a '65 2+2 (with or without a K code), a '68 GT, or a '69 Mach 1, I'm not thinking about how my car can blow theirs away. My immediate thoughts are "I'm not worthy".

Stage_3

^^yeah,....I like that as well.
New school body, old school drive train. Can't beat the sound of a healthy cam idling. Very nice.

Torino545

The Mach or 2+2 or any other classic is one thing, but a modern chassis with an old engine is another. With a classic the lines, the history grab you and a great engine finishes you off. With a repowered version of the same car you saw 50 of on your way to work, that repower has to be exceptional. Otherwise, cammed 351. Same dimensions, same idle, and possibly same performance I respect the concept, but you didn't cheap out on the build, why cheap out on the follow through?

jsimmons

No N/A 2011-15 5.0 will make that kind of power, and nowhere near the torque I'm making. I'm not worried about the GT owners out there.