[WildWill]

Originally Posted by 96GTRagTop u guys think that an automatic transmission is robbing him of 20 horsepower? On top of the 25-35 manuals loose to the wheel. ur basically saying his car is loosing 50 hp because it's automatic....... hobbycosh. something is up with his tune or ignition system......

that is correct. i think the number is about 20% loss for manuals and about 35% for autos. someone correct me on those #'s if im wrong.

[RyanGT]

Thought it was 15% and 20%. I dont know what my crank rating is anyways so doesnt matter to me! just rear wheel..

[acmillr]

Originally Posted by strkrstng2000 I got my mustang back. Just to remind everyone to what has been done here is the list: -302 stroker kit (forged and balanced) -Patriot stage 3 heads with their cams. The cams are close to comp stage 2 cams. -Professional Products Intake ported and polished. -BBk longtubes with magnaflow x pipe no cats. -Custom chip tuned on a dyno -BBk 80mm tb -C&L intake plenum -30lb injectors -fender mounted CAI -new alternator and optima battery

Let's investigate: I can see a few key ingredients that are throwing HP numbers down the tube. This is not to say you don't have a good base to build on BTW.

First, the stroker motor is great at making TQ. However, HP numbers will, in general, suffer on a stroker set up. The long stroke just won't wind up (HP) as fast as it's stock stroke counterpart.
I'm pretty sure you are not seeing any gains from the intake.
I took a second to look up your cam specs. You are running a 113 degree lobe seperation. That particular cam is a middle of the road cam. That is to say that you can run it NA or FI, but it is not optimized for either. Also, you have a relatively short duration. That is working against your heads. Your heads are not going to make great velocity numbers, and the valve staying open for a short period of time is going to multiply the effect of that slow air.
If you are running 9.0:1, this is another problem. You need compression to make power on a NA motor.
Basically, you have a block set up to make great low to mid rpm TQ. On the other hand, you have heads that are begging for some extended rpm's and a pair of cams that just want to be great mid rpm power makers. If I had your dyno sheet, I would imagine I would see a very flat and strong TQ curve during mid-range rpm's, and the numbers fall off hard shortly thereafter.
Your tune is probably affecting your power as well. However, do not expect much over 300 with your current selection.
I wish I could give you some advice for an easy fix here, but that I can't provide. I would have to suggest a different pair of cams and a twin screw blower set up (which is very rare for me) to take advantage of your long stroke and high volume heads. I don't think you will see great power NA with the heads and block you have. However, I have been fooled before...........

[neverfastenough1]

I have to agree with sweet2kstang. I believe your 80mm tb is killing you. You won't be able to suck enough air to maintain the velocity you need. You will need to force feed it. The 30 lb squirters aren't hurting you. Your mass hopefully is cal'd for the 30's so it is telling the comp exactly how to control the fuel flow. Personally, I would either grab a 70-75mm throttle body or upgrade the fuel system and get a blower. You (I don't think) mentioned the size of the mass. That plays a big part in velocity, also. It needs to be the same size or larger than the tb. Just my 2 cents.

[neverfastenough1]

Originally Posted by acmillr Originally Posted by strkrstng2000 I got my mustang back. Just to remind everyone to what has been done here is the list: -302 stroker kit (forged and balanced) -Patriot stage 3 heads with their cams. The cams are close to comp stage 2 cams. -Professional Products Intake ported and polished. -BBk longtubes with magnaflow x pipe no cats. -Custom chip tuned on a dyno -BBk 80mm tb -C&L intake plenum -30lb injectors -fender mounted CAI -new alternator and optima battery Let's investigate: I can see a few key ingredients that are throwing HP numbers down the tube. This is not to say you don't have a good base to build on BTW. First, the stroker motor is great at making TQ. However, HP numbers will, in general, suffer on a stroker set up. The long stroke just won't wind up (HP) as fast as it's stock stroke counterpart. I'm pretty sure you are not seeing any gains from the intake. I took a second to look up your cam specs. You are running a 113 degree lobe seperation. That particular cam is a middle of the road cam. That is to say that you can run it NA or FI, but it is not optimized for either. Also, you have a relatively short duration. That is working against your heads. Your heads are not going to make great velocity numbers, and the valve staying open for a short period of time is going to multiply the effect of that slow air. If you are running 9.0:1, this is another problem. You need compression to make power on a NA motor. Basically, you have a block set up to make great low to mid rpm TQ. On the other hand, you have heads that are begging for some extended rpm's and a pair of cams that just want to be great mid rpm power makers. If I had your dyno sheet, I would imagine I would see a very flat and strong TQ curve during mid-range rpm's, and the numbers fall off hard shortly thereafter. Your tune is probably affecting your power as well. However, do not expect much over 300 with your current selection. I wish I could give you some advice for an easy fix here, but that I can't provide. I would have to suggest a different pair of cams and a twin screw blower set up (which is very rare for me) to take advantage of your long stroke and high volume heads. I don't think you will see great power NA with the heads and block you have. However, I have been fooled before...........

Mann I wish my head didn't hurt so I could read all that, but what I read sounded pretty much hitting the spot.

[acmillr]

Did you get a tune yet?

[blue03mach1]

how do u get more velocity?

[Drgnracin72]

in this case hell need a blower, like someone said your not optimised for n/a performance. like ac said, you picked a cam that is not helping becasue of the heads, the heads want lots of rpms, the cams are midrange, and the stroker isnt a high rpm setup. i am runnning a stroker, with vt heads, and comp 270 cams right now. its around 8.5:1 compression, a good somewhatconservative tune and mine made 305 rwhp and 325 rwtq. i would think that you should be making somewhere near that but a little lower. when you do your turbos, youll need different cams. the ones your running and turbo cams are very much different and if you dont, youll be dissapointed again

[Smoothgrandmama]

Originally Posted by WildWill Originally Posted by 96GTRagTop u guys think that an automatic transmission is robbing him of 20 horsepower? On top of the 25-35 manuals loose to the wheel. ur basically saying his car is loosing 50 hp because it's automatic....... hobbycosh. something is up with his tune or ignition system...... that is correct. i think the number is about 20% loss for manuals and about 35% for autos. someone correct me on those #'s if im wrong.

16% man 21% Auto

[Smoothgrandmama]

Originally Posted by acmillr Did you get a tune yet?

Yes he did.