Stock 1/4 mile times?
#11
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Originally Posted by zippy
i've towed with the 5.3L and the 5.7L. the 5.7L sucked for pulling to me. there is nothing at all when the rpm comes up and in my experience when i'm towing i never run the rpm very low anyway. fortunatly the 5.3L has a bit more more torque in the upper rpm which once you get the trailer rolling is where it matters. i'll take that 5.3L for pulling anyday.
A few of my friends bought 99 trucks and had some problems pullingtheir boats out of the lauch in 4hi, most had to resort to 4 lo. The 350 equipped trucks had no problems. It took a few years but GM finally got the torque number up to and past where the L31 350 left off, albeit at 1200rpm higher. Its too bad GM stuck that brutal L31 intake on top of the best GEN 1 heads from the factory. They should have installed an aluminum marine intakle manifold with external injectors from the get go. I have noticed some much better 4000-5800 rpm power in my truck now that all the injectors, fuel pressure regulator and imjector feed lines are outside of the plenum, instead of obstructing flow throughout the intake.
I personally have never been beat by a 5.3 equipped truck in a 0-60mph race. I think that there just arent any quick 5.3 trucks around my neck of the woods. I never see any at the dragstrip either. I am not say saying that 5.3L trucks arent faster or quicker in the 1/4 mile, because they are. I just wish there were some modified 5.3's that I could play with. From a dig it would be a good race, from a roll, I would be seing taillights, well for now anyways.
Hog
#13
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my 04 RCLB with a 5.3 A/4 with 3.73 gear went a best of 14.64 @ 92 mph. The only thing I did was I removed the stock filter. I feel that with some more time I could get it to run in the 14.40 range.
#15
PT's Slowest Truck
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Originally Posted by WhiteChevy3
is this the full reason the 99 5.3s are weaker than the 2000-up?
I never ran mine bone stock, but with K&N, Gibson shorties and catback, no tuning and big heavy BFG 285/75R 16's (33's), I went 16.5@81.7. (Full street weight w/ no weight reduction and a PaceEdward's roll top tonneau that's quite heavy)
#19
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Originally Posted by Lord Aries
Best run I ever got was a 15.8sec-1/4 mile with a custom exhaust and a cone in place of the airbox (basicaly stock)... 1/4mile times with the turbo will come on the 2nd of December at a track GTG...
I now have a 2005 reg cab with a 5.3 and i can tell that there is more power and torque. It should run 15.50's or a little better. Locking rear end.
1999= 270 hp.
2005= 295 hp.
#20
I ran a 15.4 bone stock with my 04 rcsb 5.3 with a outside temp of 60 degrees.
I only gained .1 in the 1/4 by adding a magnaflow dual exhaust and a K&N drop in filter which put me at 15.372@88.38
I only gained .1 in the 1/4 by adding a magnaflow dual exhaust and a K&N drop in filter which put me at 15.372@88.38