Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - 1987 442 26.7 mpg stock v-8 3700 lbs.

sszewczuk · 08-09-2011, 09:42 PM

hey Analog,

Back in 2010 you posted this:
"Now I have a 1987 442 with a carbed Olds 307 v-8 with .67 O.D., 3.73 gears and it gets 10-13 mpg at 60 mph on the highway. Everything has been checked and gone through and the engine runs perfect. I know the 3.73 gears will hurt mileage, but that much? Cd will effect it also. The 442 is about .4 and the Firebird is around .3 . The only other thing I can think of is, the 307 only had 8:1 CR while the 305 had 9.4:1. Why would I be getting less than half the mileage? My 1974 Olds Omega with a 500hp 468 Big Block Olds with no O.D. and 3.73 gears gets 10-12 on the highway. I might as well drive that!"

Then in 2011 you said you are getting 26.5 MPG on the same 442. How did you make such a difference?

08-09-2011, 09:42 PM	#25 (permalink)
sszewczuk EcoModding Lurker Join Date: Jun 2010 Location: NJ Posts: 11 Thanks: 0 Thanked 0 Times in 0 Posts	442 hey Analog, Back in 2010 you posted this: "Now I have a 1987 442 with a carbed Olds 307 v-8 with .67 O.D., 3.73 gears and it gets 10-13 mpg at 60 mph on the highway. Everything has been checked and gone through and the engine runs perfect. I know the 3.73 gears will hurt mileage, but that much? Cd will effect it also. The 442 is about .4 and the Firebird is around .3 . The only other thing I can think of is, the 307 only had 8:1 CR while the 305 had 9.4:1. Why would I be getting less than half the mileage? My 1974 Olds Omega with a 500hp 468 Big Block Olds with no O.D. and 3.73 gears gets 10-12 on the highway. I might as well drive that!" Then in 2011 you said you are getting 26.5 MPG on the same 442. How did you make such a difference?