Fox Mustangs 1979-1993 Mustangs Member Tech & Restoration Discussion

RWHP prediction for the fun of it

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Old Feb 4, 2005 | 11:35 AM
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The build should be done in the next 4 weeks or so. I haven't built one since 1979. After a short "break in" I will tune it on the dyno and post the results.
Here's the build; If you need more specific info let me know.
Car -1988 GT
Dif - 373 positrac
trans - TKO
Engine - 347 stroker with girdle
Hawks Racing Forged Crank
SCAT forged H-style rods
Block deck milled
Trick Flow Forged pistons 9.1/1 compression
Custom fit of all cylinders to pistons, file to fit rings end gap .025
Main journals align honed after girdle install
Each internal balanved and then Complete assembly balanced
Comp cam .566/570 lift, dur @ .050 232/236 Lobe sep 114
Roller tappets, roller rockers (1.6) and roller chain set
1/2" head studs
Trick flow heads with 2.02 and 1.60 valves, ported
Typhoon performance plus intake, gasket matched
42# Ford Racing injectors with matching MAF meter
Mallory Hifyre ignition
Paxton NOVI 1000 SC with 6# boost
BBK shorty headers
MAC 2 1/2" off road H pipe
2 1/2" prochamber catbacks
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Old Feb 4, 2005 | 02:32 PM
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sa weet ride man
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Old Feb 4, 2005 | 04:27 PM
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I will post updates and pictures as it goes together.
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Old Feb 4, 2005 | 10:55 PM
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500 rear wheel
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Old Feb 5, 2005 | 07:03 AM
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Originally posted by angcobra@February 4, 2005, 5:30 PM
I will post updates and pictures as it goes together.
Engine out and at machine shop. Should get parts back from machine shop today.
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Old Feb 6, 2005 | 08:01 AM
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Well, parts were not ready at machine shop, at least they were working on it. Block has been bored, pistons matched to cylinders, deck was milled, head bolts have been drilled and tapped for ARP 1/2" studs, notching for stroker clearance has been done, crank is polished, rods have been checked.
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Old Feb 6, 2005 | 08:03 AM
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Dished pistons for 9.1/1 CR for forced induction.
H sytle forged rods.
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Old Feb 6, 2005 | 05:37 PM
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Nice, Cant wait to see the track times........
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Old Feb 7, 2005 | 12:43 PM
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how long do you think that it is going to take to put together and get running?
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Old Feb 7, 2005 | 04:20 PM
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i think another good question is how long will it take to get it properly tuned. That combo shoud make lots of power, but without it properly tuned, your starving the engines potential. Hopefully youll be in your glory by the time its completed.
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Old Feb 7, 2005 | 10:00 PM
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Originally posted by 88blueGT@February 7, 2005, 1:46 PM
how long do you think that it is going to take to put together and get running?
Between work and the World of Wheels (my 03 Cobra is in it) I hope to have it at the track in 4 weeks.
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Old Feb 7, 2005 | 10:05 PM
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Originally posted by Nathan@February 7, 2005, 5:23 PM
i think another good question is how long will it take to get it properly tuned. That combo shoud make lots of power, but without it properly tuned, your starving the engines potential. Hopefully youll be in your glory by the time its completed.
on the tuning, the car was tuned with 24# injectors before I tore it down, I may decide to start it up on the 24# injectors and no SC. Dyno tune it, run it for a few hundred miles (break in) and then go to the dyno change to the 42# injectors, new MAF meter, hook the belt to the SC and have a tuner there to tune. I have a tuner that I use for my 03 Cobra, the dyno is only 20 mins from my house.
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Old Feb 8, 2005 | 06:50 AM
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From: Odenville, AL
Originally posted by Fordracing200@February 4, 2005, 11:58 PM
500 rear wheel
Not likely at 6psi


Ang, do yourself a favor for 2 reasons.....first get a set of the 1 3/4" MAC shorty headers or long tubes if you go that route, then run 3" exhaust all the way out. This will do two things....first it will actually make the car a little quieter....2.5" with blower is going to make it VERY loud and akin to glasspacks on a chevy due to the air being forced through it....and 3" will give you better breathing and yield more power.

Don't run an FMU...you don't need it....

Close your plug gap to about .035 or you will experience a stutter from the spark being blown out.....

If you haven't already I highly recommend O-ringing the heads and using ARP head studs....this is an insurance plan

Don't run platinum plugs....use a Motorcraft or autolite plug with a 32C heat range(1 colder than stock).

We put together a 331 with Vortech a little while back with seriously ported Dart Sr. heads and made 507 RWHP with 496 ft. lbs of torque at 14psi. Your torque should be a little higher with the 347 but your HP and torque numbers will depend on the tune and boost level you choose.

Good luck and drop me an email if you need anything
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Old Feb 8, 2005 | 02:58 PM
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Thanks Paul,
I do plan to use plugs 1 to 2 ranges lower with closer gap.
I am using BBK shory headers, the 2 1/2" pipes were already there, I may change later if I have to.
I am not using an FMU I will use 42# injectors.
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Old Feb 8, 2005 | 04:10 PM
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im going 401-450rwhp. Especially since its only 6psi. Its probably going to be in the low 400's. Defintely entertain Paul's thoughts on this, but do your research as well. That 331/vortech he is talking was awesome!.
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Old Feb 8, 2005 | 05:17 PM
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Whoops, forgot he was talking 6psi. I figure 425 or so.
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Old Feb 8, 2005 | 06:58 PM
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Originally posted by Scothew@February 8, 2005, 5:13 PM
im going 401-450rwhp. Especially since its only 6psi. Its probably going to be in the low 400's. Defintely entertain Paul's thoughts on this, but do your research as well. That 331/vortech he is talking was awesome!.
Scott,
Thanks for voting. I have took Pauls comments for use. I am not as smart as many of the folks on this forum, but I am good at recognizing a right answer and good recommendations.
ps I also voted the same as you.
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Old Feb 12, 2005 | 10:06 PM
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Everything balanced as a unit now and ready to start building!
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Old Feb 13, 2005 | 09:09 AM
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GIT ER DONE!

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Old Feb 13, 2005 | 10:40 AM
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it is GIT-R-DONE actually
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