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  #61  
Old 04-20-2007, 12:38 PM
it's all dodge it's all dodge is offline
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Actually, Nascar cup , truck, and Busch series engines are a max of 358 C.I. I think there is also a 355 min. and they last lots longer nowadays (at about 9200 rpm) then they did in the early 70's, even a couple years ago before nascar started telling them how numerically high the gears can be, to limit the rpm, they where near 10,000 rpm and more dependable than the early 70s. I do wish we could see them race the car of yesterday, put them in old Chargers, Chevelles, and Torinos, no chance of that!
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  #62  
Old 04-21-2007, 01:11 AM
Sixman Sixman is offline
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Quote:
Originally Posted by it's all dodge View Post
Actually, Nascar cup , truck, and Busch series engines are a max of 358 C.I. I think there is also a 355 min. and they last lots longer nowadays (at about 9200 rpm) then they did in the early 70's, even a couple years ago before nascar started telling them how numerically high the gears can be, to limit the rpm, they where near 10,000 rpm and more dependable than the early 70s. I do wish we could see them race the car of yesterday, put them in old Chargers, Chevelles, and Torinos, no chance of that!
Oh NASCAR mills last...... they bring several engines to an event. They don't just bring some ol' reliable seasoned motor. How much does a Cup motor cost? How did this thread unravel anyway??? This was about gas mileage tips. 10,000 rpm and $100,000 plants are irrelevant to me and to this thread. We're off on a tangent....stick to the point. The point now, is that "gas mileage tips" implies, not racing, but street driving, and not 9900 rpm, or trying to measure mileage while you're qualifying, nor in the burn-out box. All i said was my 440 is torquey, to the tune of 480ft/lbs @ 3200 rpm. I know.....why don't u build a small block, then, gear your shitbox so it it revs @ 9999rpm @ 60 mph, and u go for a tour across the country. Report back to me on your engine analysis, and your mileage.
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  #63  
Old 04-21-2007, 02:56 AM
it's all dodge it's all dodge is offline
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I wasn't talking about mileage, you went off a nascar tangent, I just stated facts. but no, a high rpm small block won't get much mileage. My step dads buick 455 got way better mileage in a 4 door '74 Limited then my 318 2 barrel auto shortbed truck, the point is low rpm torquers can get good mileage, if the right combo is used, and a 360 can get good mileage, so can a 340
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  #64  
Old 04-30-2007, 11:07 AM
Sixman Sixman is offline
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Default stepdad's buick

Quote:
Originally Posted by it's all dodge View Post
I wasn't talking about mileage, you went off a nascar tangent, I just stated facts. but no, a high rpm small block won't get much mileage. My step dads buick 455 got way better mileage in a 4 door '74 Limited then my 318 2 barrel auto shortbed truck, the point is low rpm torquers can get good mileage, if the right combo is used, and a 360 can get good mileage, so can a 340
Actually, it was Tarrbabe in post #56 that went off re Nascar, in his response to my mileage tips....see post #55. Keep it between the ditches boys.........
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  #65  
Old 05-31-2007, 12:41 AM
440Fool 440Fool is offline
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Dont drive a classic mopar? Unless its a feather duster, or a dart lite!
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  #66  
Old 06-19-2007, 10:46 AM
cs51762 cs51762 is offline
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I hate to say this, but gas prices still aren't high enough for the average person to bother do anything about it. Sure, people are COMPLAINING about the cost of gas, but they're not DOING anything different than they always have. People are still on the gas pedal up to the last second when approaching a stop light/sign, ther're still flooring it pulling away from said light/sign, and they're still clogging the roads on the way to the mall to buy crap they don't need. Americans have more disposable income than they know what to do with, so current gas prices aren't really affecting them all that much.

It's all about supply and demand. The number of cars on the road increases every day, increasing the demand for gas. As demand goes up, so does the price. It's going to take $6 or $8 for a gallon of gas before the average person starts to consider ways to use less of it.

Just my opinion, your mileage may vary (pun intended).
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  #67  
Old 06-25-2007, 04:15 PM
Tarrbabe Tarrbabe is offline
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Default Anyone know how much.........

difference dual's would help mileage and mid-range power on my 91 Dak? It's a 318/ auto with single ex. I checked mileage at 18.3 but my passing power on the interstate sucks.
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  #68  
Old 08-08-2007, 03:45 PM
68 vert coronet 68 vert coronet is offline
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Default 40 bucks a week..

I spend about 40 bucks a week...I inflate my tires about 40...i watch my vacum gauge and keep it in the green. Go gently off the lights red to green, went to 391 gears from 410 and get into high gear as soon as possible.

Mainly stick to highway driving and mileage is greatly improved....Of course this is only one day of driving ....on the way home if you smoke some ricers and 3 launches from the stop lites ahhh yeah for one day...40 bucks..priceless until next saturday....
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  #69  
Old 08-20-2007, 04:59 PM
Cleeve Cleeve is offline
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Here's a quick tip to help save some precious fuel:

When you're drag racing, only race Fords and Chevys.

That way, you don't have to use too much throttle...
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  #70  
Old 08-23-2007, 11:55 AM
SithVegeta SithVegeta is offline
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I think replacing the carb with efi is supposed to help your mileage. Check out the massflo website, it seems like the way to go if you've got the cash to drop. As for o.d. Keisler apparently makes a top notch 5 and 6 speed manual and 4 speed automatic o.d. trannies if you dont mind waiting for them to send you the thing.
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  #71  
Old 08-23-2007, 12:14 PM
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dwc43 dwc43 is offline
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Quote:
Originally Posted by SithVegeta View Post
I think replacing the carb with efi is supposed to help your mileage. Check out the massflo website, it seems like the way to go if you've got the cash to drop. As for o.d. Keisler apparently makes a top notch 5 and 6 speed manual and 4 speed automatic o.d. trannies if you dont mind waiting for them to send you the thing.

The problem with this idea is that they cost so much, you'll never get your money back in fuel savings. The car will be worn out and gas will go up before you save enough money from mpg to pay for it. Now if you bought a car with the stuff already in it, well that's another story.
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  #72  
Old 08-23-2007, 03:44 PM
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rumblefish360 rumblefish360 is offline
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I sought of agree with DW here. The mileage gain is more likely slight, but it's there at a cost of??????
Same with the OD trannys. But in the long run, even more so if you drive the car alot or everyday, you will save. The payoff comes in the long run.

Between the two and what should have allready been done, you'll do well. It's justa bang vs. the buck = payoff/cost.

Simple mods seem to do best. Multi spark ignitions, air cleaners, headers w/free flowing exhaust, better intakes and heads, loss of parsidic (sp) drag ie; removale of the fan for electric fans, manual steering, no A/C. And for surley, a well tuned carb.

(Keisler dosen't make tranny's, they use the Tremac manuals that can be mostly found in popular Ford Mustangs. But also other cars.)
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  #73  
Old 08-23-2007, 06:08 PM
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Ray Bell Ray Bell is offline
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'parasitic' (from 'parasite)... 'removal' (from a check of what you typed)...

I agree too. The cost of installation of such things, unless it's something you want to do anyway, generally outweighs the fuel savings that are likely in normal use.

In my case, I drive a car something like 4000 miles a month. A lot of that time I'm in territory where fuel prices are 25% higher than in the city, so I tend to carry extra fuel bought at city prices with me. A few drums in the back and I'll get through to the next capital rather than buying at inflated country prices.

For me, doing something like this is practical. The car is a tool, used for business, so the expenditure is tax deductible or able to be written off over time and the savings are sufficient to make it all work.

I will go another way, however, with a conversion to LPG, which sells here at about 45% the price of unleaded. I can't carry any extra drums with me, but the remote area prices are still well down on city unleaded price.
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  #74  
Old 08-24-2007, 12:07 AM
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Thank you Ray.
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  #75  
Old 08-24-2007, 01:46 AM
Tarrbabe Tarrbabe is offline
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Lightbulb Too a large degree I agree..........

I had a 79 Volare' that I switched from a 318 to a 340. With the 340, Crane Cam, Hooker Headers and Holley 650 DP Spreadbore with 2.83 gears I got 21 to 23 mpg. But I did often switch the rear pig out for a 3.23 or 4.30 gear to go to the track ( 8 3/4 ) rear. I still love the idea of the 8 3/4 rear gear change. I got screwed on the title of my 69 Dart and may put my 340 in my 80 Stepside.
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  #76  
Old 09-22-2007, 05:46 PM
Shatto Shatto is offline
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1998 3.0 Dakota Automatic.
How I got better gas mileage.
Note. I drives a lot. I can amortize the cost to where things pay for themselves in gas savings.

1. Synthetic oil. (air and oil filters)
It came from the factory with synthetic oil. First service I went to Amsoil 0-W30 Series 2000 oil and installed the Amsoil By-Pass filter system (spin-on and by-pass filters under the bed, and used Amsoil filters (now the new Ea filter).
Took 100,000 miles to get the best MPG, presumably took that long to break-in.
MPG: high 18 to 19, depending on season.
Maybe there isn't a noticable improvement in MPG, but I did get 598,000 miles out of the engine and transmission. That is real savings over buying two more trucks.

2. Muffler.
Installed a Flowmaster. It does give me around 1 MPG improvement. Problem is I can't legally drive at those speeds.
So.....I'm left with noise. (after a few 100-thousand miles, it is no longer sexy or manly, just loud)

3. Tires.
Goodyear was what it came with. Wet traction left something to be desired. Sliding through intersections, brakes locked, is too exciting. Maximum life; around 95,000 miles.
Bridgestone was next. 118,000 miles, but no smiles as I slud through an intersection.
Michelins next. By golly, there is a better tire; 165,000 miles. Sure the tread was gone, but this is California and it's dry.
MPG? Nothing measurable. But...newer tread ='s better Mpg.

4. Jacobs Pro-Street Electronic Ignition. Noticable improvement in performance, idled smoother, and about 1 MPG.

4. Gibson Headers.
Immediately; more power at low speed, where I actually drive, and 10MPH faster at the end of freeway on-ramps.
2MPG.
Next time I get the entire Gibson exhaust.

Conclusion:
You can spend money, but almost nothing you spend it on is worth the cost, unless you drive far enough to get a return on gas savings.
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  #77  
Old 09-26-2007, 08:06 PM
65Brutis 65Brutis is offline
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old carb based mopar use a Qjet. best gas mileage carb ever made.
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  #78  
Old 09-26-2007, 10:24 PM
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Quote:
Originally posted by 65Brutis
Old carb based mopar use a Qjet. Best gas mileage carb ever made.
You never tried SUs, did you?
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  #79  
Old 10-04-2007, 06:44 AM
moparman92 moparman92 is offline
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Quote:
Originally Posted by Supadart View Post
Don't forget about the air conditioning? Turn that off on those comfortable days. It's amazing how many people will drive around with the windows up and AC cranked on a 70-75 degree day!

Those kinds of days are what open windows are made for!

-Gary
It's been proven that windows are more efficient up to 55-65 mph then after that they create enough drag that the ac produces a noticeable gain in fuel economy.
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  #80  
Old 10-05-2007, 02:10 PM
it's all dodge it's all dodge is offline
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I'm actually thinking with porting my 2.2 turbo 2 head, it won't loose mileage, if you dont drive it hard, it picks up more torque, less boost needed for just cruising anyway, exhaust on these turbos (3")makes big differance, then since I gotta mess with the diff and mainshaft from another trans in order to have the limited slip, might as well put in one thats 2.52 vs. the 2.73, and the mainshaft I would use would be lower (higher numerically) that will give me about the same first four gear ratios for fun, then 5th gear be a couple hundred rpm lower, get mid 30 mpg almost 35 at 75 to 80!
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  #81  
Old 10-05-2007, 02:13 PM
it's all dodge it's all dodge is offline
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I meant 3.50 diff, as opposed to 3.85, 2.52 final is the after overdrive 5th ratio .72
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  #82  
Old 12-28-2007, 01:23 AM
bronco9588 bronco9588 is offline
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Does anybody have any experience on water injection in normally aspired vehicles. My granddad had an old jeep that he would open the valve when he drove and got nearly 50/ 50 gas and water. I was thinking that water injection had some great benefits to keeping the knock down, utilizing what would be waste heat, and allow for lower octane fuels in high compression engines. I have a 440 engine that i'm rebuilding and was hoping to break 20 mpg with a tremec and water on the highway. Anybody have any experience with this?
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  #83  
Old 01-18-2008, 06:25 PM
Rigormortor Rigormortor is offline
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For better gas mileage I really watch my tire pressure, i go by the max on the tire, not the sticker on the car, if the max of the tire is 44 than I put in 39 psi.... I get 18.6 mpg on the highway with my 06 Explorer and it has the 4.0 V-6. My 59 Custom Royal with the 361 can get up to 16 mpg doing 55 on the highway.
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  #84  
Old 01-19-2008, 01:16 PM
namvet67a1f namvet67a1f is offline
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Quote:
Originally Posted by 65Brutis View Post
old carb based mopar use a Qjet. best gas mileage carb ever made.
You have obviously not heard of the ThermoQuad.
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  #85  
Old 01-19-2008, 01:21 PM
namvet67a1f namvet67a1f is offline
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Quote:
Originally Posted by bronco9588 View Post
Does anybody have any experience on water injection in normally aspired vehicles. My granddad had an old jeep that he would open the valve when he drove and got nearly 50/ 50 gas and water. I was thinking that water injection had some great benefits to keeping the knock down, utilizing what would be waste heat, and allow for lower octane fuels in high compression engines. I have a 440 engine that i'm rebuilding and was hoping to break 20 mpg with a tremec and water on the highway. Anybody have any experience with this?
YES I have .... and it also helps keep the motor clean of carbon build-up.

20 mpg with a 440 ? ...I have nearly done that with a 440 in a 62 Belvedere. Car runs deep in the 12's with a 2.76 gear ...and gets 17mpg on the hwy.
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  #86  
Old 01-19-2008, 07:55 PM
sthorvictor75duster sthorvictor75duster is offline
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Quote:
Originally Posted by namvet67a1f View Post
YES I have .... and it also helps keep the motor clean of carbon build-up.

20 mpg with a 440 ? ...I have nearly done that with a 440 in a 62 Belvedere. Car runs deep in the 12's with a 2.76 gear ...and gets 17mpg on the hwy.
how would a guy get something like that to work?? what would you do?? ( water injetion)
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  #87  
Old 01-19-2008, 11:59 PM
namvet67a1f namvet67a1f is offline
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Work ? .... the WI or the 12 second 2.76 geared car ?
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  #88  
Old 01-20-2008, 01:04 AM
sthorvictor75duster sthorvictor75duster is offline
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Quote:
Originally Posted by namvet67a1f View Post
Work ? .... the WI or the 12 second 2.76 geared car ?
sorry i didn't specify the water injection
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  #89  
Old 01-20-2008, 05:50 PM
namvet67a1f namvet67a1f is offline
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I am not sure what your Q is then !!
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  #90  
Old 01-20-2008, 07:29 PM
sthorvictor75duster sthorvictor75duster is offline
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Quote:
Originally Posted by namvet67a1f View Post
I am not sure what your Q is then !!
my question is how do you get water injection to work how do you modify the engine?? and whats the theory behind it???
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