[hooper.c401]

Hi all,
I am in the process of building a 347 stroker and don't know what to expect in terms of power and torque. I also have yet to buy a torque converter because I don't know what I need yet. My build is as follows:
94 mustang GT with 347 short block with scatt stroker kit, Renegade AFR heads with 165cc intake and 58cc combustion chamber (all CNC ported), trick flow track max stage 2 cam, street burner intake, 75mm throttle body, BBK cold air intake, 76mm MAF matched with 30lb/hr injectors, new fuel pump, AODE trans rebuilt with shift kit, B&M shifter, MegaSquirt Gen 2 ECU, underdrive pullies, 3.55 rear end gears, full magnaflow exhaust and BBK headers. What should I expect for ballpark power and torque?

 

[GT350HR]

Pretty safe to say 450-480 on HP and 380-400 on TQ.

 

[Iowan]

I'd say that is plenty generous

 

[Jason6368]

I would bet on the under 400. Your intake isn’t that big for higher hp. but I’m no expert.

 

[gtaroger]

I would think some where's between 375 and 400 hp.

 

[Iowan]

Small heads

 

[hooper.c401]

The heads are all CNC ported and have very smooth runners. My engine builder said they should preform as if it were the cast heads one size up. Additionally, what torque converter should I use?

 

[galaxiex]

Is this a street car? Or full on race car?

On a street car I don’t like to go much higher than 2200 to 2800 stall.
Any higher like in the 3000 up range becomes not fun to drive on the street.

 

[hooper.c401]

Is this a street car? Or full on race car?

On a street car I don’t like to go much higher than 2200 to 2800 stall.
Any higher like in the 3000 up range becomes not fun to drive on the street.

It is going to be a street car / daily driver.

 

[GT350HR]

I made 425 with X302 heads , no porting , B302 cam and a 715 holley on a Cobra intake Ran 12.50s at 110 in a '66 coupe with a 2200 stall 11" converter and a 4.30 gear with 275 drag radials. Your AFR heads are FAR better than the unported X heads and your cam is better than B302. I won the Street Stang Fun Ford class twice out here in Ca with it. I'm sticking with 450 min HP.
Randy

 

[hooper.c401]

I made 425 with X302 heads , no porting , B302 cam and a 715 holley on a Cobra intake Ran 12.50s at 110 in a '66 coupe with a 2200 stall 11" converter and a 4.30 gear with 275 drag radials. Your AFR heads are FAR better than the unported X heads and your cam is better than B302. I won the Street Stang Fun Ford class twice out here in Ca with it. I'm sticking with 450 min HP.
Randy

Thanks for your input. Do you think a 2600rpm stall speed would be appropriate for street use?

 

[GT350HR]

When choosing a converter, you:must" be careful in what the manufacturer is rating the stall "for". For example "my" converter was a stock 11" C4 version that would stall 18-1900 with a stock 289. The switch to the torquier 347 (because of the "moderate" can) made it stall 2200. "If" I had used a bigger cam , the low end torque would be less and it might have only stalled to 1600. What stall to use is best discussed with the converter manufacturer. as I said you could be higher or lower than an "advertised" stall RPM.