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08-03-2010, 09:45 PM
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#1 |
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Registered User
Join Date: Apr 2007
Location: Mcgraw, ny
Posts: 204
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4.8 no power!
Hi all i have a 07 1500 LS 4wd with the 4.8 and its a dog!!! only 58000 on it. I love the truck extended cab by the way but it can't get out of its own way. Are they all dogs or is there maybe something wrong?
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08-03-2010, 11:15 PM
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#2 |
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Son of a gun
Join Date: Jan 2007
Location: Hot Springs, Arkansas
Posts: 1,636
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Re: 4.8 no power!
My 09 crew cab has the 4.8 and I love it. Plenty of power for me, but you and I might have different expectations. I have no problems pulling a 5000 lbs camper on a regular basis.
A rear gear change will get you more get-up, but you will loose some top end. Are you running over sized tires?
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Bill BEATERS ARE NEATER |
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08-04-2010, 09:40 PM
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#3 |
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Moderator
 
Join Date: Jul 2006
Location: Ozark, MO
Posts: 4,893
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Re: 4.8 no power!
Mine's a real dog too, 3.23 gears and 275/55/20 (almost 31") tires kind of hard to beat the mini-vans through the intersections.
It's kind of a curse though because when I do get up to speed I run 80mph at about 1900 RPMs which makes me kind of prone to getting tickets. I have a 212/218 cam ready to go in, I'm changing gears to 4.10 and maybe a torque converter. Future plans include an LY6 (6.0) swap with cam and head work. What gear do you have?
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'86 GMC C30 Crew ~ '86 C20 Crew ~ '79 K15 Sierra Grande ~ '76 Blazer 2wd ~ '74K10 ~ '71 Cheyenne swb ~'50 3100 bagged ~ '80 Wife ~ Late model kids
Last edited by LEEVON; 08-04-2010 at 09:41 PM. |
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08-10-2010, 06:51 PM
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#4 |
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Registered User
Join Date: Apr 2007
Location: gilbert, az
Posts: 392
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Re: 4.8 no power!
kinda stuggling with the same thing. it loooks like my nbs 07 is running 3;41s but I have a lift and 35s. Trying to decide wether to go with the 4:10s or the 3:73s.
By using a gear calculator it say back to stock drive ratio I would need to goto a 3;73. hell its a four gear...auto...should be fine at 80 with 4:10s.
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"Do what you want to the girl, but leave me alone!" |
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08-11-2010, 03:06 AM
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#5 |
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Registered User
Join Date: Aug 2008
Location: mohave valley,arizona
Posts: 1,088
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Re: 4.8 no power!
heck we have the 2007 4.8 crewcab 4x4 chevy ls and this thing RIPS.it will spank several other trucks around here.and im surprised seeing as it is such a small v8.
i love it,souds good as well when it winds up.gotta love that roar sound. 
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1969 Shortbed in progress 1982 short step, few suspension and motor upgrades.getting a 468 1978 Shortbed fleet side bonanza fully loaded 1978 k20 Silverado loaded.currently engine-less 1989 k10 suburban 9" lift 65 nova And more |
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08-15-2010, 06:20 PM
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#6 | |
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Moderator
Join Date: Jul 2006
Location: Ozark, MO
Posts: 4,893
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Re: 4.8 no power!
Quote:
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'86 GMC C30 Crew ~ '86 C20 Crew ~ '79 K15 Sierra Grande ~ '76 Blazer 2wd ~ '74K10 ~ '71 Cheyenne swb ~'50 3100 bagged ~ '80 Wife ~ Late model kids
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08-17-2010, 03:06 PM
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#7 |
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Registered User
Join Date: May 2009
Location: Springville NY
Posts: 110
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Re: 4.8 no power!
i think its one of those engines thats going to be great or what youd expect from a small v8, i love mine, it was spunky right off the lot. i have a reg cab long bed wt, 6 inch lift, 34's, cold air intake, flowmaster and a triple dog tuner, im running 8 to 9 sec 0-60, one of the best engines ive ever owned, i like it better than the 5.3, no annoying noises(piston slap), but nothing beats the sound of my 92 silvy with the 5.7
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I wouldnt have it any other way...CHEVROLET! ALL throttle, NO bottle!!! Theres NO replacement for displacement Current Rides 2006 Silverado  1966 Chevy c101972 Chevy NovaPrevious Rides 2003 Silverado 1992 Silverado |
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