MustangWorks.com : Ford Forums - View Single Post - "Positive HP & TQ Gains

SVT30 · 05-22-2003, 12:47 PM

Everyone in this thread thanks a lot, really good stuff. Of the three forums I've joined since getting the little M-Cobra, this one highlights.

Anyway, does anyone know what the average/general loss for a naturally aspirated Cobra is? Loss, in this instance is let's say 320 HP & TQ at the motor, what percentage loss is there from there to the wheels [friction from the tranny, gearing, et cetera]? Assumes 5-speed, w' diff less than 4.10s since they cause "more loss" than say 3.73 or stock 3.27.

Seems to be consensus re: H vs. X especially with a 32v 4.6, that X w'cats is best. I'm guessing scavenging effects of X because of higher rev of 32v.

There is divergence re: manufacturer, however. Assuming HP & TQ are similar gets down to sound.

Some guys seem to feel that X pipes are too noisy and raspy sounding at 3,000 and up. Any experience, thoughts here would be great?

Makes me a little twitchy that I see a certain number of guys selling their X systems.

05-22-2003, 12:47 PM	#18
SVT30 Registered Member Join Date: May 2003 Posts: 9	HP & TQ Loss? Everyone in this thread thanks a lot, really good stuff. Of the three forums I've joined since getting the little M-Cobra, this one highlights. Anyway, does anyone know what the average/general loss for a naturally aspirated Cobra is? Loss, in this instance is let's say 320 HP & TQ at the motor, what percentage loss is there from there to the wheels [friction from the tranny, gearing, et cetera]? Assumes 5-speed, w' diff less than 4.10s since they cause "more loss" than say 3.73 or stock 3.27. Seems to be consensus re: H vs. X especially with a 32v 4.6, that X w'cats is best. I'm guessing scavenging effects of X because of higher rev of 32v. There is divergence re: manufacturer, however. Assuming HP & TQ are similar gets down to sound. Some guys seem to feel that X pipes are too noisy and raspy sounding at 3,000 and up. Any experience, thoughts here would be great? Makes me a little twitchy that I see a certain number of guys selling their X systems.