[Can'tHave2MuchHP]

Originally Posted by drfeelgood

Intake, headers, cam, and lower pulley = greater than 200 whp compared to stock. Is this typical?!? I see guys on here with similar packages (maybe minus the cam ) and their numbers are not this high. Genuinely asking out of curiosity.

Intake, headers, cam, and 15% lower pulley, like this build, should be at least a 700 RWHP car IMO. A good tune, a "Wednesday car" on a good dyno and you're at these numbers. I think it also picked up some good power from the axle back it has on it which if you google you'll find this video:



Which shows them picking up +39 HP from it.

So yes.

[drfeelgood]

Originally Posted by Can'tHave2MuchHP

Intake, headers, cam, and 15% lower pulley, like this build, should be at least a 700 RWHP car IMO. A good tune, a "Wednesday car" on a good dyno and you're at these numbers. I think it also picked up some good power from the axle back it has on it which if you google you'll find this video:



Which shows them picking up +39 HP from it.

So yes.

Thank you! as always, I defer to you guys. Some dynos just read high. I have seen upper pulley + lower pulley + intake + headers +exhaust + tune combos not making this much power. This just seemed to be a bit generous based on what I've seen, especially with only 15% OD of the blower.

Also, seems odd that an axleback would pick up +39whp when exhaust deletes setups aren't picking that much up. Is the factory exhaust that restrictive? ehhh , I don't understand the science behind an axle back alone picking up 39whp.

[VAZL1]

Originally Posted by drfeelgood

Thank you! as always, I defer to you guys. Some dynos just read high. I have seen upper pulley + lower pulley + intake + headers +exhaust + tune combos not making this much power. This just seemed to be a bit generous based on what I've seen, especially with only 15% OD of the blower.

Also, seems odd that an axleback would pick up +39whp when exhaust deletes setups aren't picking that much up. Is the factory exhaust that restrictive? ehhh , I don't understand the science behind an axle back alone picking up 39whp.

I would buy 39 WHP with a tune...

[drfeelgood]

Originally Posted by VAZL1

I would buy 39 WHP with a tune...

Yes, the tune alone can pick that up. Not sure how an axle back could result in 39whp

[Harry76]

I'm not sure I would call a cam a simple mod.
CAI, Throttle body, pulleys, and exhaust are simple mods but I feel a cam is a little more involved.

[Battlezone580]

This ZL1 owner has good taste, the car looks aggressive and put down good numbers!

Originally Posted by Harry76

I'm not sure I would call a cam a simple mod.
CAI, Throttle body, pulleys, and exhaust are simple mods but I feel a cam is a little more involved.

Agreed headers are "simple" but no a new cam. Good marketing technique by using the word simple and big hp gains, had me clicking very quickly.

[TheElementalCashew]

Originally Posted by drfeelgood

Yes, the tune alone can pick that up. Not sure how an axle back could result in 39whp

Usually cat/axle backs get their gains from weight savings, which is harder to quantify I suppose since it won't show on a dyno.



Streetspeed717's C7Z is looking badass too!

[drfeelgood]

Originally Posted by TheElementalCashew

Usually cat/axle backs get their gains from weight savings, which is harder to quantify I suppose since it won't show on a dyno

I get that, 100%.

I’m just saying, this car is running your setup plus a cam, with 3% less OD. Do CAMS add 100+ HP?

I’m not trying to be an ass, just trying to understand these numbers, which seem a bit high compared to every other build I’ve seen, minus CAMS. These discussions can be very helpful as guys build their cars and are trying to get the best bang for the buck!

[JB'sZL1]

Originally Posted by drfeelgood

I get that, 100%.

I’m just saying, this car is running your setup plus a cam, with 3% less OD. Do CAMS add 100+ HP?

I’m not trying to be an ass, just trying to understand these numbers, which seem a bit high compared to every other build I’ve seen, minus CAMS. These discussions can be very helpful as guys build their cars and are trying to get the best bang for the buck!

Well, it's not 100hp for the cam. The tune, headers and pulley add up to more than 50hp.

[TheElementalCashew]

Originally Posted by drfeelgood

I get that, 100%.

I’m just saying, this car is running your setup plus a cam, with 3% less OD. Do CAMS add 100+ HP?

I’m not trying to be an ass, just trying to understand these numbers, which seem a bit high compared to every other build I’ve seen, minus CAMS. These discussions can be very helpful as guys build their cars and are trying to get the best bang for the buck!

Originally Posted by JB'sZL1

Well, it's not 100hp for the cam. The tune, headers and pulley add up to more than 50hp.

I think it is reasonable that a good blower cam could get 100whp on the LT4, with all the mods I already have as supporting mods. Cam only, with no supporting mods, I wouldn't think 100whp would be doable.

[Can'tHave2MuchHP]

Originally Posted by drfeelgood

I get that, 100%.

I’m just saying, this car is running your setup plus a cam, with 3% less OD. Do CAMS add 100+ HP?

I’m not trying to be an ass, just trying to understand these numbers, which seem a bit high compared to every other build I’ve seen, minus CAMS. These discussions can be very helpful as guys build their cars and are trying to get the best bang for the buck!

What JB said and every build and dyno is different.. Don’t stress over numbers on a dyno sheet. Worry about real world performance.

[drfeelgood]

Originally Posted by JB'sZL1

Well, it's not 100hp for the cam. The tune, headers and pulley add up to more than 50hp.

that's not what I'm saying. I'm saying he has the same mods (with tune) minus the cam is doing 100whp less. So yes, that means the cam is adding 100+ whp, epsically if he is overdriving the blower 3% less (15% vs 18%)

[drfeelgood]

Originally Posted by Can'tHave2MuchHP

What JB said and every build and dyno is different.. Don’t stress over numbers on a dyno sheet. Worry about real world performance.

yes, trap times are all that matters. I'm mentioning the numbers, because the OP started the thread talking about impressive numbers. I am definitely aware that differences can exist in MUSTANG DYNO vs DYNOJET vs other. Again, we are all here trying to learn. I don't want a newbie seeing this and thinking that it is easy or "simple" as the OP put it to safely add 200whp over stock , especially without meth or flex fuel (which the OP doesn't mention)

[Can'tHave2MuchHP]

Originally Posted by drfeelgood

yes, trap times are all that matters. I'm mentioning the numbers, because the OP started the thread talking about impressive numbers. I am definitely aware that differences can exist in MUSTANG DYNO vs DYNOJET vs other. Again, we are all here trying to learn. I don't want a newbie seeing this and thinking that it is easy or "simple" as the OP put it to safely add 200whp over stock , especially without meth or flex fuel (which the OP doesn't mention)

The OP happens to be the owner and head tuner/tech/operator at Race Proven Motorsports which is a top level LT/LS Performance shop. He knows what he’s talking about. He’s speaking and posting for his shop.

A cam, lower pulley, headers and intake is pretty easy stuff for a qualified shop such as RPM. I’d expect 700-730 RWHP for any build with a cam. Obviously, high DA, stingy dyno, bad tune or just a low HP car can change everything. So everything dyno # wise should be taken with a grain of salt.

Another member here has Upper/Lower pulley, intake and headers and runs on E85 and Meth and makes 740 RWHP. So that’s a stock, unopened engine. But at the same time, there are members that have those mods and a cam that make closer to 690-700. Now both cars may run 10.2 at 145 or whatever number you want to use, but their dyno differ. It’s nothing to get worked up about.