Approximate HP???
Nice numbers!
However, I noticed your ride also has LT headers, which 05YellowGT's ride did not have when it was N/A, and they can add 15-20 rwhp. In order to compare apples and apples with 05YellowGT's ride, your rwhp would be approx. 333-338 w/o the headers. That equates to 47-52 rwhp required from only the heads to reach 385 rwhp. Sorry, that's just not gonna happen.
Also, your dyno chart does not state a CF, which means the test results were not adjusted for the D/A during the dyno run. And that will result in unrepresentative higher power #'s if the run was made during cool, dry weather conditions.
However, I noticed your ride also has LT headers, which 05YellowGT's ride did not have when it was N/A, and they can add 15-20 rwhp. In order to compare apples and apples with 05YellowGT's ride, your rwhp would be approx. 333-338 w/o the headers. That equates to 47-52 rwhp required from only the heads to reach 385 rwhp. Sorry, that's just not gonna happen.
Also, your dyno chart does not state a CF, which means the test results were not adjusted for the D/A during the dyno run. And that will result in unrepresentative higher power #'s if the run was made during cool, dry weather conditions.
Last edited by ski; Jan 24, 2012 at 12:06 PM.
Originally Posted by ski
Nice numbers!
However, I noticed your ride also has LT headers, which 05YellowGT's ride did not have when it was N/A, and they can add 15-20 rwhp. In order to compare apples and apples with 05YellowGT's ride, your rwhp would be approx. 333-338 w/o the headers. That equates to 47-52 rwhp required from only the heads to reach 385 rwhp. Sorry, that's just not gonna happen.
Also, your dyno chart does not state a CF, which means the test results were not adjusted for the D/A during the dyno run. And that will result in unrepresentative higher power #'s if the run was made during cool, dry weather conditions.
However, I noticed your ride also has LT headers, which 05YellowGT's ride did not have when it was N/A, and they can add 15-20 rwhp. In order to compare apples and apples with 05YellowGT's ride, your rwhp would be approx. 333-338 w/o the headers. That equates to 47-52 rwhp required from only the heads to reach 385 rwhp. Sorry, that's just not gonna happen.
Also, your dyno chart does not state a CF, which means the test results were not adjusted for the D/A during the dyno run. And that will result in unrepresentative higher power #'s if the run was made during cool, dry weather conditions.
Originally Posted by ski
If that increase is for an OEM 4.6L 3V, then feel free to post the documentation.
Originally Posted by ski
It's a simple matter of viewing B&A dyno charts posted at various Mustang forums.
Originally Posted by ski
Unfortunately, some forum members require proof of the power increase from a mod(or mods), instead of only a verbal power increase estimate.
Both CF's(SAE or STD) can be used, but the STD CF does have an obvious advantage(highlighted below) for dyno test result bragging rights.
One just has to make sure the same CF is used for both the B&A runs.
SAE CF:
SAE (Society of Automotive Engineers), USA. Power is corrected to reference conditions of 29.23 InHg (99 kPa) of dry air and 77 F (25°C). This SAE standard requires a correction for friction torque.
STD CF:
STD is Another power correction standard determined by the SAE. Power is corrected to reference conditions of 29.92 InHg (103.3 kPa) of dry air and 60 F (15.5°C). Because the reference conditions include higher pressure and cooler air than the SAE standard, these corrected power numbers will always be about 4% higher than the SAE power numbers. Friction torque is handled in the same way as in the SAE standard."
FWIW
(Note: The rwhp increase from the cams was after the heads were installed. Hence, the rwhp increase from cams alone will probably be a little less than the test result of 30 rwhp, since the tested aftermarket heads flow better than the stock units.)
http://www.mustang50magazine.com/tec...ams/index.html
(Note: The rwhp increase from the cams was after the heads were installed. Hence, the rwhp increase from cams alone will probably be a little less than the test result of 30 rwhp, since the tested aftermarket heads flow better than the stock units.)
http://www.mustang50magazine.com/tec...ams/index.html
Last edited by ski; Jan 25, 2012 at 09:38 AM.
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