If I'm interpreting Aerohead's stuff right, you could see a 20% fuel economy increase with a well-made Kammback.
http://ecomodder.com/forum/showthrea...ial-12986.html
Based on the fact that the rear of your cabin hits near 20% of the template, and the end of the kammback will hit about 40%.
Quote:
zero------ Cd 0.488
10 %----- Cd 0.375
20 %----- Cd 0.299
30 %----- Cd 0.240
40 %----- Cd 0.194
50 %----- Cd 0.162
60 %----- Cd 0.135
70 %----- Cd 0.125
80 %----- Cd 0.118
90 %----- Cd 0.118
100 %---- Cd 0.115
|
.299/.194=~1.54, or 54% drag reduction... right? Half that for fuel economy increase. Phil let me know if I'm doing this wrong
Even if that equation is backward you should still see 4mpg. Start to drive more economically and you could see 30mpg tanks. After all 20mpg on an auto trans is not the best starting point
Last (I promise haha), you might consider doing a build thread for the car to consolidate all this info and the grille block stuff, etc. into one place.