Any secrets for a bumping MPG on 1998 305?

[smdk2500]

. The cover? Meh. I saw a good article a while back but F me if I can find it now.

They are good for keeping you from filling the bed with extra crap that you don't need. Or keeping stuff from blowing away and staying dry. Fuel mileage wise I've had them on other trucks and didn't see a difference.

 

[Schurkey]

Check your tires' max pressure rating on the sidewall. Subtract the ambient temperature from 160°F. For every ten degrees below 160°F, drop 1 psi from the max rating. Air your tires to that pressure. I.E. if your tires are rated to 52 psi and it's 90°F outside, air them up to 45 psi.

OK, that's all new to me.

Guess I'll have to try that out. Thanks.





For ****'s sake, DO NOT drive around with the tailgate down, thinking you'll improve aerodynamics and get better fuel economy.
1. The tailgate UP traps a bubble of turbulent air, making the vehicle as a whole more aerodynamic as the rest of the air flows gracefully over the turbulent bubble; and
2. The pickup bed is DRAMATICALLY weaker in a rollover if the tailgate is down. If the bed flattens, the cab--and therefore you and yours in the cab--are likely to sustain more damage, too.

 

[454cid]

For ****'s sake, DO NOT drive around with the tailgate down, thinking you'll improve aerodynamics and get better fuel economy.
1. The tailgate UP traps a bubble of turbulent air, making the vehicle as a whole more aerodynamic as the rest of the air flows gracefully over the turbulent bubble; and
2. The pickup bed is DRAMATICALLY weaker in a rollover if the tailgate is down. If the bed flattens, the cab--and therefore you and yours in the cab--are likely to sustain more damage, too.

A friend used to have a Ford Ranger Splash and he'd run around with the tailgate down and the tubular cage folded out, for mileage reasons. I'd walk by his truck, fold the cage in, and put the tail gate up

 

[b454rat]

You got some issues if that's the mileage your getting with a 305. My Tahoe with the 350 and fat tires all around did pretty good. Never really calculated it but guessing mid teens. My 08 Tundra lifted with 35s, 5.7 and 4.30 gears gets 11.5-12, mix of highway and town. I live on top of a hill/mountain (many call it a mountain, but I've been to the Rockies, these are hills lol) but the terrain here is all hills. Air pressure plays a big part. Check em, maybe pump em up more. Fresh tune up, and as others stated check for anything dragging while rolling. Plugged cats or exhaust sure won't help.

 

[thegawd]

A while back I posted an article on truck aerodynamics that was written by a top GM Engineer in 2014. it applies to all trucks though. one major thing they highlighted was the gap between the cab and the box, it creates a lot of drag.

my thread

Truck Aerodynamics

https://media.gmc.com/media/us/en/gmc/news.detail.html/content/Pages/news/us/en/2013/May/0516-gmc-pickup-aero.html I posted this info in another thread but I think it deserves its own so I dont high jack it... It's an article with one of GM's top engineers about truck aerodynamics. I was...

www.gmt400.com

and the article.

Site Maintenance

 

[thegawd]

look at this.... tailgate up and down.... tailgate up wins and heres the proof. theres a whole bunch of pics like this.

You must be registered for see images attach

 

[PlayingWithTBI]

I remembered seeing this and her mentioning a tonneau cover helps.

"So what accessories can truck owners add to help aerodynamics? Tonneau covers for the bed help smooth airflow over the truck, and Bloch says soft covers are more beneficial than hard covers because they form to how the air wants to flow. Running boards can also help air flow smoothly down the truck’s sides."

 

[cubandeathgrip]

Will a EGR Delete, provide more power with better mileage?​

 

[df2x4]

Will a EGR Delete, provide more power with better mileage?​

No.

 

[PlayingWithTBI]

^^^This, but if you delete EGR and add HLC (Highway Lean Cruise) you can improve MPG.