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6.5 Non-Turbo Diesel

The 6.2's from what i've seen are dogs.

I saw a guy on the boat ramp with his 6.2 k5 and he could barely get his boat out of the water.

I've also wheeled with a 100% stock 6.2 diesel and was not impressed.

I don't own a 6.2 and have never driven one but I will say that they are very close to a stock tbi 350 when it comes to towing.

That being said I wasn't impressed with my stock tbi 350 either. My 318 jeep cherokee out pulls it without a problem. I went to a 350 hp 355 in the k5 and am pretty happy with it. Still working out the bugs with the fuel injection programming but where the afr is right she jumps.

As far as MPG goes I don't think it matter unless your talking 5+ mpg difference as diesel is more expensive.
 
Diesel is 75c a gallon cheaper than gas here. but I was still makeing 15MPG daily driving with my 24v cummins at 600rwhp.
 
diesel can be alot cheaper if you prefer to run bio-diesel(which is up for discussion) but if you get a cheap 6.2 then decide to run that you will be way better off than a 350. but thats my .02
 
i'd argue that biodiesel is not cheaper. i've seriously considered it, and unless i want to spend every weekend making fuel (after I find an oil source, plus spend all the money and time on building the equipment and testing fuel till i get it right), it's not an option. It's about $5/gallon here, compared with regular diesel at about $2.30 right now.
 
colbystephens said:
i'd argue that biodiesel is not cheaper. i've seriously considered it, and unless i want to spend every weekend making fuel (after I find an oil source, plus spend all the money and time on building the equipment and testing fuel till i get it right), it's not an option. It's about $5/gallon here, compared with regular diesel at about $2.30 right now.
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once it goes back up i think it would be worth it. only if it was a DD of course
 
I think as opposed to making your own "bio-fuel" these kits would be the way to go. http://www.greasecar.com/kit_selected.cfm?selectA=+&selectB=+&selectC=89&AddToCart=Find+Kit+%BB If you dont drive alot it would not be worth it, but if you are commuting 40+ miles each way these kits would pay for themselves pretty quickly. I have serious considered going this route with my cummins but with the known realibilty issues of the vp44 injection pump, with my luck the pump would take a dump as soon as I put the kit in. If I had an older diesel I would definetly consider this.
 
irspiff said:
I would really like to know if any of you read the article on this page thedieselpage.com/finale.htm.

They claim they got 10.8 loaded and 17-20 unloaded mpg out of a 6.5 that they modded producing around 300 hp. Of course to find out how will only cost you $24.95... Which would be fine if it were true. But from your guys real world experience your saying its not really feasable. Or did they really prove a 6.5 could be competitive with a Pstroke, cummins and Dmax like they claim?

I know 10 mpg out of a 500 hp 454 is not really to be expected. I just put holley projection on the truck hoping to get a gain in mpg and I am not sure if I have or not yet. Its a weekend warrior so I dont drive it much and have not had a chance to track the mileage. Basically my point was I figure if I am only getting about 6 mpg with it now, by pumping up the hp at least I would be getting real power out of my 6 mpg. Then I could blow up the hills at 85 mph half throttle instead of 35 mph wide open throttle. Cause thats important! :D
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Well if you are getting 6 MPG now and it's a dog, you think you will get 6 when you pump it up to get the HP, expect the 3-4 like everyone else that pumped up their 454.
I think 17MPG is possible on a 6.5 with 300HP, on flat ground with no other than driver and driving nice, but not 20.
I was getting 20 driving like an ass in a 3/4 ton sub heavy but no trailer and going up the mountains at 75MPH from CA to UT but I don't think I had more than mid 200 HP.
 
Fabrimacator21 said:
The 6.2's from what i've seen are dogs.

I saw a guy on the boat ramp with his 6.2 k5 and he could barely get his boat out of the water.

I've also wheeled with a 100% stock 6.2 diesel and was not impressed.

I don't own a 6.2 and have never driven one but I will say that they are very close to a stock tbi 350 when it comes to towing.

That being said I wasn't impressed with my stock tbi 350 either. My 318 jeep cherokee out pulls it without a problem. I went to a 350 hp 355 in the k5 and am pretty happy with it. Still working out the bugs with the fuel injection programming but where the afr is right she jumps.

As far as MPG goes I don't think it matter unless your talking 5+ mpg difference as diesel is more expensive.
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When was the last time you checked?
Diesel in CA is back to 10-15 cents cheaper than gas :D
Diesel is always cheaper than gas, only in high demand times diesel goes up, but in general it's always cheaper, and that was the reason I started driving diesel trucks, then I fell in love with the economy, the torque and the long life of a diesel engine.
 
imiceman44 said:
When was the last time you checked?
Diesel in CA is back to 10-15 cents cheaper than gas :D
Diesel is always cheaper than gas, only in high demand times diesel goes up, but in general it's always cheaper, and that was the reason I started driving diesel trucks, then I fell in love with the economy, the torque and the long life of a diesel engine.
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Diesel cheaper than gas? Not around here, but I did look at the regional diesel vs. gasoline average price and saw that diesel was actually averaging lower than gas right now on the west cost. But in anycase, based on the national average diesel was significantly more expensive than gas from about mid-'07 until recently, and in most areas diesel is still 10-15 cents/gallon more.
 
6.2Blazer said:
Diesel cheaper than gas? Not around here, but I did look at the regional diesel vs. gasoline average price and saw that diesel was actually averaging lower than gas right now on the west cost. But in anycase, based on the national average diesel was significantly more expensive than gas from about mid-'07 until recently, and in most areas diesel is still 10-15 cents/gallon more.
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Well in the past month it finally came back to normal.
As you noted since 07 till now, which is what 2 years if that.
That is not normal, look back far enough to see trends.
I know since 2000 when I started driving deisel trucks diesel was checper some times as much as 40 cents per gallon untill 07.
To me now it's even more important since I drive a big rig now and I use about 100 gallons a day:o
One thing though in winter times I know the east coast diesel goes up because production of heating oil goes up and diesel goes down so the price of diesel goes up, it's always offer and demand.
Out here in the west coats I guess more people use propane and electric for heat so heating oil is not an issue.
 
Fabrimacator21 said:
The 6.2's from what i've seen are dogs.

I saw a guy on the boat ramp with his 6.2 k5 and he could barely get his boat out of the water.

I've also wheeled with a 100% stock 6.2 diesel and was not impressed.

I don't own a 6.2 and have never driven one but I will say that they are very close to a stock tbi 350 when it comes to towing.

That being said I wasn't impressed with my stock tbi 350 either. My 318 jeep cherokee out pulls it without a problem. I went to a 350 hp 355 in the k5 and am pretty happy with it. Still working out the bugs with the fuel injection programming but where the afr is right she jumps.

As far as MPG goes I don't think it matter unless your talking 5+ mpg difference as diesel is more expensive.
Click to expand...

Not trying to say stock 6.2's are powerhouses, but stories like the above just attribute to the false stereotypes going around about these engines. Let's get some more information about this boat pulling episode. Should you include "the boat weighed 15,000 lbs.", or the reason he had trouble was because the tires were spinning, or the transmission was slipping. Sorry, but in that situation a properly running 6.2 should have just as much, if not more, low-end grunt as any 350.

Why were not impressed with the 6.2 when wheeling? What type of situation were you in? Crawling or anything halfway technical mine does great, but doesn't spin doughnuts in a cornfield nearly as good as a buddy with a built big-block.
 
6.2Blazer said:
Not trying to say stock 6.2's are powerhouses, but stories like the above just attribute to the false stereotypes going around about these engines. Let's get some more information about this boat pulling episode. Should you include "the boat weighed 15,000 lbs.", or the reason he had trouble was because the tires were spinning, or the transmission was slipping. Sorry, but in that situation a properly running 6.2 should have just as much, if not more, low-end grunt as any 350.

Why were not impressed with the 6.2 when wheeling? What type of situation were you in? Crawling or anything halfway technical mine does great, but doesn't spin doughnuts in a cornfield nearly as good as a buddy with a built big-block.
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It's OK, in every post that I have read and replied in the past few years, I always see the posts bashing the 6.2 coming from people that saw or heard, never have I seen a bad post oming from someone that owned them.
Some might say they don't compare to a cummins, well I agree to that, but none will say it's a piece of crap I want a 350 instead.
:D
 
imiceman44 said:
It's OK, in every post that I have read and replied in the past few years, I always see the posts bashing the 6.2 coming from people that saw or heard, never have I seen a bad post oming from someone that owned them.
Some might say they don't compare to a cummins, well I agree to that, but none will say it's a piece of crap I want a 350 instead.
:D
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i acutally want to swap my 350 for a 6.2!!!:D:D
 
I've had many of those same "6.2L's suck" comments but it always comes from someone who drove a 6.2L C-code half ton with 3.08 gears or were comparing it to a Cummins or a built 454.

Either that or it's their brother's cousins' friends' dad's neighbor had a 6.2L and it was a dog and blew up out of shame back in '85.
 
I asked this back on page 4 but it got lost in the shuffle.

irspiff said:
I would really like to know if any of you read the article on this page thedieselpage.com/finale.htm.

They claim they got 10.8 loaded and 17-20 unloaded mpg out of a 6.5 that they modded producing around 300 hp. Of course to find out how will only cost you $24.95... Which would be fine if it were true. But from your guys real world experience your saying its not really feasable. Or did they really prove a 6.5 could be competitive with a Pstroke, cummins and Dmax like they claim?

I know 10 mpg out of a 500 hp 454 is not really to be expected. I just put holley projection on the truck hoping to get a gain in mpg and I am not sure if I have or not yet. Its a weekend warrior so I dont drive it much and have not had a chance to track the mileage. Basically my point was I figure if I am only getting about 6 mpg with it now, by pumping up the hp at least I would be getting real power out of my 6 mpg. Then I could blow up the hills at 85 mph half throttle instead of 35 mph wide open throttle. Cause thats important! :D
Click to expand...
 
6.2Blazer said:
Not trying to say stock 6.2's are powerhouses, but stories like the above just attribute to the false stereotypes going around about these engines. Let's get some more information about this boat pulling episode. Should you include "the boat weighed 15,000 lbs.", or the reason he had trouble was because the tires were spinning, or the transmission was slipping. Sorry, but in that situation a properly running 6.2 should have just as much, if not more, low-end grunt as any 350.

Why were not impressed with the 6.2 when wheeling? What type of situation were you in? Crawling or anything halfway technical mine does great, but doesn't spin doughnuts in a cornfield nearly as good as a buddy with a built big-block.
Click to expand...

No 15,000 pound boat (k5's are rated at 5000lbs:rolleyes:), no spinning tires or slipping tranny. Just a 3500 pound patio boat. The ramp was pretty steep... the guy ended up putting it in low to get her up the hill.

When I wheeled with the 6.2 we were doing some mild trail running, hill climbs and mud. Like I said I was too impressed with my 350 either but it did seem to have a little more grunt.
 
Well, im not a gearhead by any means, nor do i have any hardcore stuff here where i gotta worry about busting d60 axleshafts or anything, but i will say this. I had an 86k5 with a 305 or a 350, i couldnt tell, but either way she didnt impress me. Theres some pretty steep hills in my area where i wheel that gave her a hard time getting up it, even in 4lo. I got my 86m1008 now and with all that low end grunt she crawls up hills just above idle with no issue at all. I love the 6.2 and as others said, its not a cummins or any other big diesel, but for a small diesel its awesome.
 
I forgot to add I was running a 3" exhaust all the way back with a flowmaster 40 series and a k and n.

The guy may have had one of the taller geared 6.2's or maybe he had the trailer in a ditch underwater... I don't know. But I saw what I saw.
 
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