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big block or small?

I cry bullshit on 13 mph without overdrive. My 350 powered 2WD 1 ton with fuel injection hardly does that.

I think the burb is fine for that load, but it must be set up correctly. Heavy rear springs, 14 bolt FF, gears, TH 400 with huge cooler, etc.
 
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I cry bullshit on 13 mph without overdrive. My 350 powered 2WD 1 ton with fuel injection hardly does that.



[/ QUOTE ] I second, my 76' C30 dually with a 454/th400 gets at it's best about 10 or 11 going 55mpg on the freeway. In town It gets around 7 or 8.
 
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ok guys, its a 28' sierra toy hauler, it weighs 7k empty, i have a load leveling hitch, and im pulling 4-5-6 quads in it. so loaded with quads, fuel, water and supplies im right around 9-9500 lbs.

father in law says that the 1/2 ton burb is diff then the 3/4 ton burb, mines a half with d44 and corp 14 swaped in? is it diff? ive got stainless lines and im swaping in disks in rear, also have 3/4 leafs, and 1 ton overloads, also installing air bags.

is a burb enough truck for this much load? or should i go crew cab dually with 454? i was thinking maybe rebuilt 383 would replace motor, and a th400 and 205 for trans? i just want reliable. i drive to work but can live with 8mpg, i was also planning on going to a 35" all terrain since it is 99% in the sand.

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I would say that you need the 3/4 ton big block at
least !!!I tow our 26' 7000 lbs travel trailer on trips [even over HWY 17 to Santa Cruz] and you diffenality know that it is there ! /forums/images/graemlins/shocked.gif! I get scared if I would have to stop fast...The brakes on all the 97 burbs SUCK,I use mostly the trailer brakes !!!As far a gas mileage ...it takes 75.00 to fill it up and you might as well get out the AMEX card !!! /forums/images/graemlins/eek.gif
If I would get another truck just for towing I would a Dodge 1 ton dually with cummins /forums/images/graemlins/deal.gif My Dad has a 3/4 ton cummins and he get 20 mpg /forums/images/graemlins/cool.gif My dodge service truck gets 14 mpg and it weights 9500.00 lbs alone ..I went over the scales at the dump with my 8'x16'dump bed trailer ant I was almost 20,000 lbs and my truck was fine towing that load !!! /forums/images/graemlins/grin.gif /forums/images/graemlins/grin.gif
 
To tow that kind of load I'd want more truck. If I was going to be putting a lot of miles on I'd want a diesel as well. By the time you change trannies, engines, and/or regear, you could pick up a good running Dodge with a Cummins or Chevy with a BBC and not have to worry about it.
 
uhmm 1 ton were 10,000 GVW not 16,000, 1
16,000 was what the heaviest 6400 trucks weighed GVW from at least 47-53, and is about same GVW as a C60

3/4 ton base GVW was 7500 and 1/2 ton base GVW was 5000
 
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uhmm 1 ton were 10,000 GVW not 16,000, 1
16,000 was what the heaviest 6400 trucks weighed GVW from at least 47-53, and is about same GVW as a C60

3/4 ton base GVW was 7500 and 1/2 ton base GVW was 5000

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GCWR is gross combined weight rating, which includes the weight of the truck and trailer combined and is the most accurate way to tell if a truck can safely pull a trailer.

You're referring to GVWR which is gross vehicle weight rating, which has little to no bearing on how much weight can be towed. GVWR will tell you how much payload capacity a truck has if you subtract the actual vehicle weight (GVW) from the rating.

1/2 ton GVWR's are anywhere from 5000-6200. My K10's is over 6,000, I know that for a fact.

3/4 ton GVWR's start at 7,200. C6P package gets you to 8,600.

1 ton SRW trucks are usually 9,200

1 ton DRW trucks are typically 10,000, but can be up to 15,000 if you include the C3500HD

GCWR is factored by engine size and gear ratio. Since you can't get 4.56 gears in a 1/2 ton, the max GCWR for any particular engine combo isn't available for a 1/2 ton rig.

Either way if you're talking about a heavy trailer, the tongue weight will cause the tow vehicle to exceed either the RAWR or the GVWR anyway, so a 3/4 or 1 ton rig is necessary for any trailer with any kind of real tongue weight.

If anyone ever has any towing questions about a particular specification, shoot me a PM. I have a pretty good understanding of tow ratings at a whole. Number one recommendation I can give you is WEIGH YOUR TOW VEHICLE! Don't guess. Weigh it full of tools, gas, and with you in it, and subtract that from your GCWR to get your tow rating. DON'T rely on factory "Gross Trailer Weight" specs which don't take into account the additional people in your vehicle or all that extra crap you brought with you or the dog and his gear and all the optional equipment that added weight to your truck before it even rolled off the assembly line.

That said, no offense is intended, but I suggest that you read up a little more. GVW is simply "Gross Vehicle Weight" which is absolutely impossible to say that it was this weight for this vehicle, etc., as no two trucks weigh the same amount.
 
When I was out of work and traveling all over the NW lookin for work I had all my tools and gear in the back, about 3K.
For all my trips I keep fuel logs. In that 3 months the 73 with a 463 avereaged 13 MPG, the 305 powered K5 with the camper on it avereaged 10MPG.
So by crying BS you call me a liar???
For someone that seems to know alot about nothing you sure have alot to yap about.
You don't have to be a rocket scientist to realize that when a plant makes enough torque in the lower RPM range that you do not need to wind the snot out of it to get it to move.
Hmmm pullin a grade at 3k or 5K which plant is gonna require more fuel to do the same amount of work??????
Just because it is a BBC does not automaticly condem it to bad mileage. Keep yer foot out of it and use the power when nessesary and good mileage can be achieved even with a mild BBC.
I drove that truck empty to work forever as well, 100 mile round trip.
I know exactly how much fuel that rig burns.
If ya don't believe me you can lick me where I sh!t.
Cry bullshit??? Oh that's right you are comparing your BBC powered rig. What's that??? ya don't have a BBC rig... Sounds like a personal problem to me.
One of several.
Call me a liar??? **edited for content**
 
with all you have done to your burban you have planty of truck to tow with. i have yet to tow anything with my 96 dually, but it is 454, 4l80e BW4401 and D70 HD rear. 4.10 gears and i dont like how high the RPM's are down the highway. not a bgi deal, ut my Legal GVWR for a trailer is 10,500 with 5th wheel or gooseneck. 10k with weight distribution. i know for a fact i have the power to pull way more than that. i plan on putting a 12,500lbs goos neck behind it. brake upgrades are in the works, along with both axles being braking axles on the trailer. ill be pulling a blazer and small car on the trailer.
NOW, what you dont have is enough motor, and a relable tranny. if you are set on using it for mainly towing, swap in a manual, or a 4l80e for overdrive th400 for not. as for gears, keep them 4.10 maybe 4.56. drop down to a narrower higher load rated tire, with a street friendly tread. they last longer, and are safer for towing.

now, lets talk motor. Big BLOCK! 396-406-454-427-502-572, caddy.. buic 455 it does not matter. just swap one in. in stock for you would be more than happy with it. throw on some EFI and call it a day with some headders.

in about a year im going to replace the 454 in my dually with a 502 and put the 454 in my blazer.
good luck with it and if you have any more questions, post up.
Grant
 
hey seventy i have the same setup as you but a 5 speed on my 96 dually and was asking about swaping a 502 and was told gm doesnt make a replacement for the vortec 454 but the do for the tbi units , maybe you can tell me otherwiese i would love to do it when the time for a new moter comes , i pull 2 trucks with mine on a 35 ft flatbed and dont know how much im pulling but my truck is a k30 with 42 and my brothers burban is on 48 inch tractor tires with 454 and 2.5 tons so i know its heavy , i have to pull in 4th and i criuse down the hwy running 3500 rpms for hours at a time and so far hasnt seemed to hurt it , my old haul truck was a 90 modle with 400 trans and pulled a little more rpms and it held up fine for 120,000 miles , sold it for 2000 buck 2 days ago and it still ran good
 
As far as EFI.. for a BBC it is gonna be TBI without droppin lots of coin for a port injection unit.
Wimpy intake and horrible peanut heads.
A decent set of heads like 049's with 2.19 intakes, decent intake, and a cam to match with a good Q-jet feedin it all with a comression ratio of 9.5 or so will be good for 450 horse and about 500 ftlbs torque.
And every bit of HP and torque usable in all through out the RPM range.
Plenty of torque availible to pull a grade at 60 mph and enough HP to plant yer ass in the seat at a stop light.
But that is the key to mileage... keepin yer foot out of it.
Ya gotta love when the front lifts and twists to the left and ya leave em behind though.
Try that with yer rod knockers.
Brother and sisters there is no better feeling than when you are loaded to the hilt and drop the hammer at the light, that happens to be at the bottom of an 8% grade and you blow past the camino halfway up and keep pullin.
Nuff said.
 
youo may be right stump.
i didnt think about that. the vortec port injection 454 is a full roller motor. so it may be me ending up and putting the 502 in the blazer...
ill do some more research on it and get back to ya.
ethier way im buying a 502 for something....
grant
 
Tim ya know if ya asked Steve real nice he would change yer status from CK5 member to Salad Tosser. /forums/images/graemlins/deal.gif
I think that would be more fitting
Nuff said
I try to blow ya off but yer moronic comments set me off sometimes.
 
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Tim ya know if ya asked Steve real nice he would change yer status from CK5 member to Salad Tosser. /forums/images/graemlins/deal.gif
I think that would be more fitting
Nuff said
I try to blow ya off but yer moronic comments set me off sometimes.

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You really need to relax.

I've had friends with overdrive and 454s and still can't pull that kind of MPG. Just because something you state as fact is questioned doesn't mean you need to fly off the handle.

The rest of your post is not only argumentative, but it's a blatent personal attack that I will not become a part of. The old Tim might have played on this fact, but I'm personally going to let it slide on the grounds that I know you're a good guy and that I don't think flying off the handle myself would serve any useful purpose at all.

We all have our own personal experiences. Mine is that my TBI 350 powered 2wd 1 ton truck gets 13 MPG at 55 MPH empty and on flat ground here in Illinois. Because of this, I find your info hard to believe and I questioned it. This isn't something you need to fly off the handle and go all ballistic about. I don't know everything and neither do you, but I find what you're saying hard to believe.

Anybody that has any question as to how or why I responded so calmly to a blatent personal attack needs to read, "I would like everyone to read this" in the lounge forum about my new attitude change because I'm tired of being an [darn].
 
90 3/4 ton burb 350 with 150K , th400, 265's and 4.10's gets 134MPG. tank after tank. Coming back from Cali with a tow dolley and a 50 chevy truck on it it was gettin 10 at best.
 
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Tim ya know if ya asked Steve real nice he would change yer status from CK5 member to Salad Tosser. /forums/images/graemlins/deal.gif
I think that would be more fitting
Nuff said
I try to blow ya off but yer moronic comments set me off sometimes.

[/ QUOTE ]

You really need to relax.

I've had friends with overdrive and 454s and still can't pull that kind of MPG. Just because something you state as fact is questioned doesn't mean you need to fly off the handle.

The rest of your post is not only argumentative, but it's a blatent personal attack that I will not become a part of. The old Tim might have played on this fact, but I'm personally going to let it slide on the grounds that I know you're a good guy and that I don't think flying off the handle myself would serve any useful purpose at all.

We all have our own personal experiences. Mine is that my TBI 350 powered 2wd 1 ton truck gets 13 MPG at 55 MPH empty and on flat ground here in Illinois. Because of this, I find your info hard to believe and I questioned it. This isn't something you need to fly off the handle and go all ballistic about. I don't know everything and neither do you, but I find what you're saying hard to believe.

Anybody that has any question as to how or why I responded so calmly to a blatent personal attack needs to read, "I would like everyone to read this" in the lounge forum about my new attitude change because I'm tired of being an [darn].

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Nice Tim! /forums/images/graemlins/thumb.gif Very mature response.

Powermad, relax just a bit. /forums/images/graemlins/thumb.gif
 
Oops the question was big or small block.. I'd say big block about a 6.2 Liter size AKA 379 CID /forums/images/graemlins/laugh.gif
 
Tim what I flew off the handle about was personal and up close experience about and you called BULLSHIT.
So to me and mine you called us a liar.
And I have nothing better to do than post useless bullshit.
In my responce I did not state that a freind of mine got this performance out of his rig.
I stated with cold hard facts about what my rig can do and has done consistantly without fail.
And you cry BS.
As I said salad boy lick my bung.
 
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Tim what I flew off the handle about was personal and up close experience about and you called BULLSHIT.
So to me and mine you called us a liar.
And I have nothing better to do than post useless bullshit.
In my responce I did not state that a freind of mine got this performance out of his rig.
I stated with cold hard facts about what my rig can do and has done consistantly without fail.
And you cry BS.
As I said salad boy lick my bung.

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My PERSONAL experience is that my 350 powered rig hardly gets that mileage.

The contineued personal attacks are childish and un-necessary and will not net any response from me at all.
 
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