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 2000 4.8 v8..... new age wee o 5?

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batty1214
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PostSubject: 2000 4.8 v8..... new age wee o 5?   September 14th 2009, 5:59 pm

so i got a new truck at work in the shop.. they brought it down from the state of washington, with 120,000 on the ticker.... the thing is a gutless wonder.... i am replacing both front wheel bearing/hub assemblies, as they are about to fall apart... plugs and wires are on order, anything else that i may want to add to upgrades to this GUTLESS little wonder to help it handle the life of open pit mining???? 15% grades are tough on 6.0s, but a 4.8??? i made fun of the weeO5s till this thing showed up... it takes 15 minutes to make the trip to the top of the hill that normally takes 5..... i got passed by a big haultruck..... Shocked Laughing
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merlin5577
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PostSubject: Re: 2000 4.8 v8..... new age wee o 5?   September 14th 2009, 6:12 pm

Your not the first person to say the 4.8L leaves a lot to be desired, but I dont think its on the same page as the 305.

The 4.8 is the same block as the 5.3 and the 6.0 so the same modifications can be made to pep it up. Intake/exhaust/tuner would be a great start. If you want to tear into it, a LS6 cam/intake/head combo would REALLY wake it up.

================================================
-Robert.
My Fleet;

2011 Volkswagen Jetta TDI 2.0L 6A
2010 Chevrolet Malibu LT 2.4L 6A
2003 Chevrolet Silverado LS 6.6L 5A
1997 GMC Suburban SLT 5.7L 4A


"If you dont stand behind our troops, feel free to stand in front of them."

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76silverado
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PostSubject: Re: 2000 4.8 v8..... new age wee o 5?   September 14th 2009, 8:49 pm

Or a good tune and some injectors and tb.
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merlin5577
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PostSubject: Re: 2000 4.8 v8..... new age wee o 5?   September 15th 2009, 11:16 pm

Batty, arent the 6.0s you guys have 3/4 ton trucks? and the 4.8L is obviously a half ton. That would mean the gearing would be different, so part of your performance problem could be there.

================================================
-Robert.
My Fleet;

2011 Volkswagen Jetta TDI 2.0L 6A
2010 Chevrolet Malibu LT 2.4L 6A
2003 Chevrolet Silverado LS 6.6L 5A
1997 GMC Suburban SLT 5.7L 4A


"If you dont stand behind our troops, feel free to stand in front of them."

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76silverado
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PostSubject: Re: 2000 4.8 v8..... new age wee o 5?   September 15th 2009, 11:18 pm

Just get a 6.0 outta wrecked truck or a 5.3 outta wrecked truck and swap in it.
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batty1214
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PostSubject: Re: 2000 4.8 v8..... new age wee o 5?   September 16th 2009, 5:44 pm

i didnt consider gearing..... hmm.... i have to pull both differentials apart to inspect and replace worn parts..... maybe a new gear set is in order..... thats cheaper than a supercharger, but still not as fun.
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FaselZ71
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PostSubject: Re: 2000 4.8 v8..... new age wee o 5?   September 17th 2009, 6:29 pm

Yeah supercharger is always funner then gears!! I wonder what kind of gears are in the skidders at work? Those things are powerhouses!
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phatfarmer2

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PostSubject: Re: 2000 4.8 v8..... new age wee o 5?   September 17th 2009, 10:50 pm

my 4.8 in my 99 sierra i had std cab long bed 4x4 used to haul my blazer and a 18 foot car trailer with no probs at all.. had plenty of balls to move it along.. it as well had 120k since that truck got rearended i pulled the motor and im going to swap it in my 66 c10... shoudl be awesoem in that... im a fan of a 4.8 motor... as well as a 5.3 i have in my tahoe...
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batty1214
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PostSubject: Re: 2000 4.8 v8..... new age wee o 5?   September 17th 2009, 10:59 pm

FaselZ71 wrote:
Yeah supercharger is always funner then gears!! I wonder what kind of gears are in the skidders at work? Those things are powerhouses!
scratch BIG ones?...... what kind of skidder do you guys run? when i worked logging, we had two old Clark skidders.... one was a grapple, and the other was a chain drag...... i pulled those gears apart, and rebuilt the differentials... if i remeber right, the differentials ran 45 to 1 ratio, and the transmission in high range was a 25 to 1, and low was like 73 to 1........ either way, the motor was only rated for 60 hp, and the gears made up the rest.....
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76silverado
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PostSubject: Re: 2000 4.8 v8..... new age wee o 5?   September 17th 2009, 11:10 pm

Thats a little TOO much gearing.
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batty1214
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PostSubject: Re: 2000 4.8 v8..... new age wee o 5?   September 18th 2009, 5:20 pm

76silverado wrote:
Thats a little TOO much gearing.
theres no such thing...... just let me have that much bigger tires right.
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merlin5577
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PostSubject: Re: 2000 4.8 v8..... new age wee o 5?   September 18th 2009, 7:10 pm

batty1214 wrote:

76silverado wrote:
Thats a little TOO much gearing.

theres no such thing...... just let me have that much bigger tires right.

Amen.

================================================
-Robert.
My Fleet;

2011 Volkswagen Jetta TDI 2.0L 6A
2010 Chevrolet Malibu LT 2.4L 6A
2003 Chevrolet Silverado LS 6.6L 5A
1997 GMC Suburban SLT 5.7L 4A


"If you dont stand behind our troops, feel free to stand in front of them."

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merlin5577
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PostSubject: Re: 2000 4.8 v8..... new age wee o 5?   September 18th 2009, 7:13 pm

phatfarmer2 wrote:
my 4.8 in my 99 sierra i had std cab long bed 4x4 used to haul my blazer and a 18 foot car trailer with no probs at all.. had plenty of balls to move it along.. it as well had 120k since that truck got rearended i pulled the motor and im going to swap it in my 66 c10... shoudl be awesoem in that... im a fan of a 4.8 motor... as well as a 5.3 i have in my tahoe...

How much did that car trailer weigh?

================================================
-Robert.
My Fleet;

2011 Volkswagen Jetta TDI 2.0L 6A
2010 Chevrolet Malibu LT 2.4L 6A
2003 Chevrolet Silverado LS 6.6L 5A
1997 GMC Suburban SLT 5.7L 4A


"If you dont stand behind our troops, feel free to stand in front of them."

New Idea
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phatfarmer2

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PostSubject: Re: 2000 4.8 v8..... new age wee o 5?   September 18th 2009, 7:45 pm

merlin5577 wrote:
phatfarmer2 wrote:
my 4.8 in my 99 sierra i had std cab long bed 4x4 used to haul my blazer and a 18 foot car trailer with no probs at all.. had plenty of balls to move it along.. it as well had 120k since that truck got rearended i pulled the motor and im going to swap it in my 66 c10... shoudl be awesoem in that... im a fan of a 4.8 motor... as well as a 5.3 i have in my tahoe...

How much did that car trailer weigh?

ohh i dunno it was an 18 ft car tailer with a full steel deck.... plus the weaight of my blazer
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batty1214
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PostSubject: Re: 2000 4.8 v8..... new age wee o 5?   September 18th 2009, 9:03 pm

Were you towing on mostly flat ground? cause the 4.8 In the chevy at work really doesn't like the 15- 20 % grades........ and thats empty.... I'd hate to try and tow with it...... Its the same truck as you had.......
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merlin5577
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PostSubject: Re: 2000 4.8 v8..... new age wee o 5?   September 19th 2009, 10:44 am

Batty I think I just found your problem, most trucks never see 15-20% grades so i'm not surprised it doesnt like it. I've pulled 14k up an 9% grade in my Duramax and it wouldnt go over 75mph. Its not the trucks fault...

================================================
-Robert.
My Fleet;

2011 Volkswagen Jetta TDI 2.0L 6A
2010 Chevrolet Malibu LT 2.4L 6A
2003 Chevrolet Silverado LS 6.6L 5A
1997 GMC Suburban SLT 5.7L 4A


"If you dont stand behind our troops, feel free to stand in front of them."

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batty1214
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PostSubject: Re: 2000 4.8 v8..... new age wee o 5?   September 20th 2009, 12:06 am

yeah, its the hills i would think..... but the 5.3 & 6.0 all perform really well.... they usually dont have problems until they get into the dozer pushes that range in the 25-30% ranges...... i did get good results with the plugs, wires, cold air intake, and single 3 inch magnaflow exhaust..... replaced all 4 O2 sensors, and had the dealership adjust the tune for the mile above altitude issue.... it now is a respectable little motor..... it pulled the main mine road which climbs 2 miles at 15% grade, in 1min 30 seconds...... up from 7.5 minutes.. i timed with a stop watch.......
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batty1214
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PostSubject: Re: 2000 4.8 v8..... new age wee o 5?   September 20th 2009, 12:10 am

not gonna try and tow with it, but i may be looking into a 4.8 for the 95 to replace the 5.0.....a little work, and a supercharger, and a call to painless wiring, and itll run i think.... but then a 6.0 may just be easier to find.
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merlin5577
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PostSubject: Re: 2000 4.8 v8..... new age wee o 5?   September 20th 2009, 9:46 pm

Glad you got it sorted out. The 4.8L isnt a bad engine, just little known.

As for the swap, go 6.0, more cubic inches are always better.

================================================
-Robert.
My Fleet;

2011 Volkswagen Jetta TDI 2.0L 6A
2010 Chevrolet Malibu LT 2.4L 6A
2003 Chevrolet Silverado LS 6.6L 5A
1997 GMC Suburban SLT 5.7L 4A


"If you dont stand behind our troops, feel free to stand in front of them."

New Idea
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TruckAddict
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PostSubject: Re: 2000 4.8 v8..... new age wee o 5?   September 21st 2009, 2:09 pm

You could always freshen up the 4.8 with some rings and bearings, and while at it put a 5.3 crank in it. But I agree w Merlin and it likely being more a gear issue than the engine. They are a bit on the wussy side, but being the same bore as 5.3, the longer stroke is going to do nothing but add torque and that's were its lacking to get up the hills.
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76silverado
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PostSubject: Re: 2000 4.8 v8..... new age wee o 5?   September 22nd 2009, 11:26 pm

Yea, some 3.73's would help.
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batty1214
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PostSubject: Re: 2000 4.8 v8..... new age wee o 5?   October 28th 2009, 11:17 am

well, the old 4.8 pulled 500 gallons of water(about 4500lbs.) up a 22% grade last thursday, and i was impressed.... we did get some 3.73 gears in the differentials, and now she is a going unit..... its alot better now that we ditched the 3.08 gears....
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merlin5577
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PostSubject: Re: 2000 4.8 v8..... new age wee o 5?   October 28th 2009, 12:37 pm

Awesome! Glad to hear it Batty.

================================================
-Robert.
My Fleet;

2011 Volkswagen Jetta TDI 2.0L 6A
2010 Chevrolet Malibu LT 2.4L 6A
2003 Chevrolet Silverado LS 6.6L 5A
1997 GMC Suburban SLT 5.7L 4A


"If you dont stand behind our troops, feel free to stand in front of them."

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TruckAddict
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PostSubject: Re: 2000 4.8 v8..... new age wee o 5?   October 28th 2009, 2:12 pm

Yep, that will do it. Big differance in ratio there. Sometimes when you got a little motor with a little bit of torque, its easier to multiply the torque by changing gear ratio than it is to increase the torque of the motor. I can assure you, that motor is thanking you profusely. Now when the motor gets tired and ready for a rebuild. Rebuild it put a 5.3 crank in it, then it will be 5.3.
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johnboggs21
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PostSubject: Re: 2000 4.8 v8..... new age wee o 5?   October 28th 2009, 4:21 pm

merlin5577 wrote:
Glad you got it sorted out. The 4.8L isnt a bad engine, just little known.

As for the swap, go 6.0, more cubic inches are always better.

I agree with Merlin. Theirs no replacement for displacement.
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