How To Increase Fuel Economy In A 454

Username	Postal service: 454 guys - what is your mpg? (Topic#184528)
patgizz Member #76 Posts: 8594 Loc: Cleveland, OH Reg: 01-30-00 User Info Send Private Topic View Contour	03-13-08 02:40 PM - Postal service#1387240 specifically i am looking for what someone with a 454 TBI dually is getting with either the five speed overdrive manual (91-95) or the 4L80-Due east. my mileage sucks with the SM465 non overdrive manual, and i demand to see what i would be comparing to for gas savings to decide if information technology would be worth information technology or not to sink the cash into a tranny swap. Email Study

Marv D Contributor Posts: 224 Loc: Arizona Reg: 05-29-07 User Info Send Private Topic View Profile	03-13-08 06:17 PM - Post#1387379 In response to patgizz Pat, yous desire me to tell you how to 'fix' the mileage <smile> Lamentable, really have nothing for y'all. I know my fuel vendor runs a 70'southward 1-ton 454 carb'd motor with 4.x gears ,, he is lucky to get 8-ten with a couple of drums of fuel and a liftgate on the back. He hates the truck with fuel at $iii.25 here. BTW, pulled the trigger on a new motor for my 94, anbd accept it at the trunk shop getting prettied up. One of these days I'm going to have to go all this junk I own in 1 picture,,, Broad angle lense no uncertainty. (I'chiliad about to catch up with y'all!)<smile> 1966 C-10 street toy 12.06@107 1964 chevyII nine.14@145 all the junk in one place Email Report
conquista90 Member Posts: 103 Age: 32 Loc: Austin, TX Reg: 05-19-06 User Info Send Private Topic View Profile	03-thirteen-08 08:53 PM - Post#1387474 In response to Marv D I know a kid who can go equally good as 12-14MPG if he keeps his pes out of information technology. Merely in spirited driving, he says he tin can get as bad as half dozen-8MPG. Electronic mail Report
Boosted 1 Member Posts: 179 Loc: Downey,Ca. Reg: 10-25-06 User Info Send Individual Topic View Profile	03-thirteen-08 09:52 PM - Post#1387492 In response to patgizz I have a 92 3500 dually 454,TBI,4L80E,and mileage sucks about 8 mpg on a adept day ! Its most how many gallons to the mile 92 3500 toy hauler, 63,70,Nova,83 Shovel, Blown with N2o 90 step side E-mail Written report
cdmhenry Very Senior Member Posts: 2408 Loc: Minden, NV. Reg: 09-14-00 User Info Send Individual Topic View Profile	03-14-08 04:thirteen PM - Post#1388118 In response to patgizz My '91 454SS with 4L80E, 4:10 & TBI got just nether 14mpg on a 1K trip through the mountains (March 3). It ordinarily gets effectually 13mpg on the open route regardless of conditions, bed full of junk or empty. Information technology does accept a Comp Cams 302 and slightly cleaned upward heads & intake. Best thing I ever did for mileage is alter to a heated O2 sensor. Oh, I also changed it over to a Vette knock sensor. The original knock sensor is likewise sensitive. IMO, there is nothing much you can practice to justify the swap based on mileage. Although the 4L80E is a cracking tranny. You'll need a matching ECU for the swap - so proceed an eye out. The trannys are not hard to find. Every Government Interference In The Economy Consists Of Giving Unearned Benefit, Extorted By Force, To Some People At The Expense Of Others - Ayn Rand Email Written report