Is 350 RWHP Possible ?

[wlingle92lx]

I have a new motor that was just built and installed and I want to know if it can make 350 RWHP. I don't have the money to get the car dyno tuned yet so for now I want an estimate on what it will make.

Stock Block Bored 0.030
Scat 4340 Forged Crank And Rods
Speed-Pro Forged 11.5.1 Compression Pistons
Harland Sharp 1.6 Roller Rockers
AFR 205cc Heads (2.08/ 1.60 Valves) (Flow 308 CFM @.600 lift)
Lunati Hydralic Roller Cam (242/252 Duration @0.050) (560/576 Lift)
Lunati 1.450" Valve Springs Good up to 680 lift and 7000 RPMs
Edelbrock Victor 5.0 Intake Manifold
FRPP 75mm Throttle Body
C&L 76mm MAF
24lb Injectors
1 5/8" Longtube Headers
2 1/2" O/R H-Pipe
Flowmaster 2 Chamber Exhaust
Running on 93/110 Mix Gas

I plan on shifting this car at 6800+ RPMs

I also have a Nitrous Express SHO Wet Nitrous System. I plan on spraying a 250 shot so I will just add that onto what i'm making on motor.

HELP !!!!!!!!!!!!!!!!!!!!!!!!!!

[1979bruiser]

i myself think the heads are overkill and you would make more power withe 185 heads.aslo your injectors ,air meter, and headers seem to small for those heads.if you havent purchased the heads yet i would consider going with the 185.

lastly i have a friend w/ a edelbrock rpm set up.heads rpm 2 intake and a 70mm tb.
he has had his car computer tuned and makes just over 400 hp at the wheels. this is on a .030 302 block w/ no aditional porting on the heads or intake etc. so 350 is very real if you match your parts up a little better.

[1979bruiser]

he also made around 340 hp w/o any tuning on the first pull just bolting everything together.

[wlingle92lx]

So which would be a better set-up, and make more horsepower?

AFR 185 heads
Trickflow R Intake or RPM ll
Lunati Cam That I Have

or

AFR 205 Heads
Edelbrock Victor 5.0 Intake
Lunati Cam I Have

The Parts I chose are matched pretty well.
AFR 205 Heads (3500-8000 RPM Range)
Edelbrock Victor 5.0 Intake (3500-7500 RPM Range)
Lunati Cam (3000-7200) RPM Range

I dont see how the first combonation listed could make more power than the second. The ports are smaller and have a lower RPM range. Anybody knows that the higher you rev a 302 the more power it will make.

[rwhite65]

Anybody knows that the higher you rev a 302 the more power it will make.[/QUOTE]

Not always true
Ryan

[wlingle92lx]

So a 306 with AFR 185 heads a performer RPM ll Intake and the lunati cam I have reving it to around 6500, would make more power than a 306 with AFR 205 heads, an Edelbrock Victor 5.0 intake and the lunati cam reving a 6800+ RPMs

?????????????????????????????

[1979bruiser]

every engine combo i see in the magazines for a 302 , they never use 205 or 210cc heads. always 170-185 so i would say afr185 heads and if you waqnt to twist your 5.0 up that high then go w/ the vic jr intake and cm set up. keep in mind that you still only have a 302 and the cinders can only pull so much, now if it were a stroker 347 or larger keep going with the 205 heads.also just becasue they are 205 cc heads does not designate them 3500-8000 rpm opperating range. in a recent magazine smeading performance built a 351w w/ 205 heads and it peaked below 6000 rpms , i think closer to 5500 .chose your cam and intake to work where you want to opperate your rpm range but go w/ 170cc-185cc heads.
dan

[1979bruiser]

i would like the headdoctors opinion on your question but i would say yes to a 306 w/ afr185 heads.

[wlingle92lx]

So there is no horsepower gain going with the 205s over the 185s ?

Your saying the cam and intake control the RPM range, not the heads?

[1979bruiser]

yes thats why you dont see heads advertised w/ peak rpm ranges like cams. you only have 306 inches of displacement sucking and would not be as effective as a 358 w/ 205cc heads.if you have time and a collection of magazines throught the year it wouldnt be a bad idea to look at the heads they used on various 5.0 build ups to see what cc heads seem to be the most useful.

[wlingle92lx]

So the 185s whould be the best choice for my combo.

Would the engine pull hard to 7000 RPMs with the 185s ?

[1979bruiser]

absolutly as long as thats the range of your cam intake set up.

[Dark Knight]

What gear and trans do you plan on running? You'll need at least a 4.56 for that kind of RPM. And a T-5 isnt going to last on slicks.
With the 205's, you MIGHT make more MAX HP, but it's going to be so sluggish at lower engine rpm that it isnt worth the trade off. Torque is what moves the car, not HP.

Oh yeah, if you get 300+HP out of it and spray it with a 250 shot, can we see the pieces?

It will look something like this

[1979bruiser]

WOW...... its all about velocity not flow numbers.
dark knight what did that sound like when it happend?

[Dark_5.0]

Lots of BS in here. My heads are 192cc and on top of that they are ported. My car made awesome torque all the way through the RPM range. You dont pull the wheels with no low end now do ya.

[Dark_5.0]

Originally Posted by 1979bruiser

lastly i have a friend w/ a edelbrock rpm set up.heads rpm 2 intake and a 70mm tb.
he has had his car computer tuned and makes just over 400 hp at the wheels. this is on a .030 302 block w/ no aditional porting on the heads or intake etc. so 350 is very real if you match your parts up a little better.

Unless this motor is like 13 or 14 to 1 compression I call Bull$hit.

[1979bruiser]

call it what you want im just trying to be helpful and passing along the info that has been passed along to me .and being that the motor belongs to him paid for with his money and not mine. than i cant say for sure what is in it. and you can surly pull the front wheels off the ground w/ no torque 5 speed lots of r's and drop the clutch....what ever. and the short bock is a dss that he says he paid 7500.


by the way do you have your mustang computer tuned by a profesional??? if you dont you may find more hp there than you think.

[wlingle92lx]

The tranny is a G-Force T5 with a Mcleod 500 Clutch that will handle 650+ RWHP
It has 4.30 gears on a 28" Tire.

I will tell you one thing. It may be sluggish at low RPMs but rev it up to 5000 and dump the clutch and your making power then.

I have 3 freind who make at least 500 RWHP with there stock blocks and have been runing them for year now.

1: 306 H/C/I with a Paxton Novi 2000 @12psi (Stock 170K Bottom End)

2: 347 H/C/I + 150 shot (Stock Block w/Forged Crank & Rods)

3: 306 H/C/I with a Single Garret GT42 Turbo @10psi (Stock 150K Bottom End)

I dont think I have anything to worry about for a while.

[1979bruiser]

either way you decide to go let us know it turns out and what you decide to run.good luck

[wlingle92lx]

I'm just going to go with the high RPM set-up.

This car is going to be used mostly for drag racing with some occasional street driving. I know the AFR 205/Victor set-up will take out most of the fun on the street, but I really don't care.

This car is going to leave at 5000+ RPMs and never drop below that the whole way down the 1/4.

Its like my dad once said, The 69 Boss 302 Mustang had a single plane intake, HUGE heads w/2.25" intake valves and was only rated at 290 BHP. The thing was a real turd if you would mash it in 2rd gear at 2000 RPMs. But if you would rev it up to 5000 and dump the clutch it would light the tires up all the way into 3rd gear.