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Tired of the 300 bashing

 
  #106  
Old 01-28-2009, 12:17 PM
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Originally Posted by Freaksh0w View Post
Seems to be the HIGH average gas mileage 300-6's get around 19-20 on the highway. That seems to be the general consensus, maybe 19mpg driven luckily with good gas can get you 19mpg. And in the city, they aren't much better than my 302, according to what most people say. My 302 gets good mileage anywhere that I have to go slow, but it's the highway that kills me with no OD. Good mileage = 14-16mpg. Either way, I definitely see 24, and what you first claimed, 26 mpg to be an error. Maybe your odometer is off, maybe your tank holds more than you think, I don't know.

Maybe one day you took a trip down a 400 mile mountain road, and got to coast most of the way. Who's to say? But you got to understand where we come from when we question 24-26mpg in a 300-6 full size truck.
I'm not sure exactly what kind of mileage mine gets since my odometer is off, but I *think* it's somewhere around 9 town, 15.5 highway. Far cry from 24, huh?
 
  #107  
Old 01-28-2009, 02:19 PM
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Well, I get my 14-16mpg on backroads where I can cruise an easy 20-30mph or around there. 55mph probably gets around 9-10 mpg for me, but I'm running between 2200-2300 RPM. I think my manual transmission helps my gas mileage on the backroads. Between being able to stay around 1000RPM and also coast in neutral sometimes, I get good gas mileage in certain cases. I go 2nd through 4th by 20mph, and only use first to screw around in. I have never 'needed' first unless off road and want to make a bumpy trail feel smoother by crawling through it.

My gas mileage is never good on the highway, though. It's just awful going down the highway. 45mph is about the limit for moderate gas mileage (probably 12-13mpg) in my truck with my gearing. 55mph and above just sucks it down.
 
  #108  
Old 01-28-2009, 02:38 PM
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Originally Posted by Freaksh0w View Post
Well, I get my 14-16mpg on backroads where I can cruise an easy 20-30mph or around there. 55mph probably gets around 9-10 mpg for me, but I'm running between 2200-2300 RPM. I think my manual transmission helps my gas mileage on the backroads. Between being able to stay around 1000RPM and also coast in neutral sometimes, I get good gas mileage in certain cases. I go 2nd through 4th by 20mph, and only use first to screw around in. I have never 'needed' first unless off road and want to make a bumpy trail feel smoother by crawling through it.

My gas mileage is never good on the highway, though. It's just awful going down the highway. 45mph is about the limit for moderate gas mileage (probably 12-13mpg) in my truck with my gearing. 55mph and above just sucks it down.
I hear ya. You're lucky with the manny. My E40D seems to rob power and mileage. I can kind of control it cruising around town - if I want to, I can shift my truck before 2,000 in 1st and 2nd and cruise at 30 [email protected],000 rpm with od on, or 1,500 with od off. It's when I hit 45 on up the rpm's begin to climb. I'm going 2,100 rpm or so at 60 mph. I can hold at 70 all day long but it feels like my truck is screaming. Maybe it's not, but it just feels that way to me.
 
  #109  
Old 01-28-2009, 04:09 PM
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My 79 carbed 300 would gets 15MPG at 55 MPH all day long, provied everything is tuned just right. It takes a fair amount of attention to keep it tuned just right.

The 79 is 4x4 with 4 speed manual NP435.

Now my 92 F250 has 4.10s and a 5 speed ZF that will get 17 MPG if I behave myself. I hate to run it much past 70 or not for long times.
 
  #110  
Old 01-28-2009, 05:13 PM
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where do you find those 5 speeds lol... i do like the ratios in my t170... i just want a gear so low that i dont need to use my clutch... but im guessing i either get a posi rear with bad highway miles or a non posi rear with good highway miles

unless im tring to spend money LOL
 
  #111  
Old 01-28-2009, 05:18 PM
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Originally Posted by 1982bluef150 View Post
where do you find those 5 speeds lol... i do like the ratios in my t170... i just want a gear so low that i dont need to use my clutch... but im guessing i either get a posi rear with bad highway miles or a non posi rear with good highway miles

unless im tring to spend money LOL
What are you talking about? Just put an auto locker in your rig.
 
  #112  
Old 01-28-2009, 05:25 PM
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sorry i know nothing about rear wheel drive set ups... link me? lol
 
  #113  
Old 01-28-2009, 06:16 PM
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Originally Posted by 1982bluef150 View Post
sorry i know nothing about rear wheel drive set ups... link me? lol
I have a powertrax no slip automatic locker in my rig, I recomend this. Cost about the same price as a limited slip. Only thing is, it's dangerous if you get a flat tire and change one tire for a smaller one. With both tires locked and one tire is smaller than the other, it can grenade your differential. On the plus side a locked rig is pretty capable. My rig is just a 4x2 but it'll go just about anywhere a non-locked 4x2 can't. I ordered my locker from a Jegs magazine.
 
  #114  
Old 01-28-2009, 11:13 PM
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i want a locker but im just gonna save my coin and get a selectable the shop i work for has really good ties with almost every auto/machine shop in town when i did my t-case chain its list price was $300 cdn i paid $130 cdn and change with tax Jammin ... so yeah a selectable will run probly $900 but i could probly get it for $700 maybe less
 
  #115  
Old 01-28-2009, 11:14 PM
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i want a locker but im just gonna save my coin and get a selectable the shop i work for has really good ties with almost every auto/machine shop in town when i did my t-case chain its list price was $300 cdn i paid $130 cdn and change with tax ... so yeah a selectable will run probly $900 but i could probly get it for $700 maybe less
 
  #116  
Old 01-28-2009, 11:19 PM
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im sorry i was trying to edit my first post and it did that so my bad how do you delete posts?
 
  #117  
Old 01-28-2009, 11:33 PM
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so whats the difference between posi and a locker? my friend is giving me his 8.8 4.10 posi rear for the open rear out of my truck he said it was posi all the time.... like it was set up tight when it was put together
 
  #118  
Old 01-29-2009, 12:20 AM
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Originally Posted by 1982bluef150 View Post
why couldnt it? youd never beleive how much little stuff tricks and tweaks that you can do to get better gas mileage a buddy of mine said he got a newer dodge cargo van to get 50 mpg with a 318 ... granted thats when its empty and ive learned that having the right exhaust setup will change your fuel economy and im guessing a rebuilt carb helps to... (ive heard our 1 barrels like to get rebuilt)
ahaha, I am gonna raise the BS flag on a Dodge cargo van getting 50 mpg. No way, no how is that gonna happen with a 318
 
  #119  
Old 01-29-2009, 12:47 AM
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my dads 95 F-150 sees an average of 18 mpg 50/50 mix driving but he doesnt fly with it, but he doesnt baby it. that is with the A/C on doing the speed limit with a bone stock engine but with everything working properly. mine on the other hand, i get about 12 on average but im not really concerned with the milage. if i was i wouldnt have 33s, stock 3:55s gearing and drive like a normal mid 20 yr old

i can see a 300 getting 24-26 mpg in a stripper truck with a manual trans and overdrive with 2.87 gearing doing the speed limit. quite a few people on FSP are reporting 20+ mpg with thier trucks.
 
  #120  
Old 01-29-2009, 12:49 AM
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Originally Posted by 1982bluef150 View Post
so whats the difference between posi and a locker? my friend is giving me his 8.8 4.10 posi rear for the open rear out of my truck he said it was posi all the time.... like it was set up tight when it was put together
posi, limited slip, trac lock are all limited slips. a locker has both tires turning all the time, a limited slip applys limited power to one side when traction is limited.
 

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