HELP Want to go 12.5's or so in a ECSB 4x4
Sep 13, 2007 | 08:03 PM
#62
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From: Deep in the seedy underworld of Koonerville
Originally Posted by Slow91z
Thanks for the info man, I'll do a quick search while I'm in the office right now, no need for you to do a search for me, unless you know of a particularly good thread...If so I'd appreciate you sending me in the right direction.
Sep 13, 2007 | 08:05 PM
#64
Originally Posted by XLR8NSS
I think people are blowing going 12.5 all outta wack here. $15k sounds crazy. 
I will use my truck as an example for the 4L65E since it is the same weight as yours. With the RADIX at 7.5psi or so and the other mods in my sig I was making around 530flywheel hp give or take to go 13.25. The transmission was fine for a while with just the Magnuson tune. I don't know really how many miles it has with the blower but, probably between 5-10K miles. It slipped going into third the last time at the track and was on a 13.0X pass too.
I also daily drove the truck but, was not too bad on it, maybe 5-6 WOT blast a day. 
That was a completely stock internal 4L65E with just tuning.
A built one will last longer but, you just have to figure it as a wear item at these power levels IMHO.
There are a couple of 4L80E swap threads on here but, I remember you saying you don't have a lot of time to be online. I will look for some and post the links tomorrow.
Now, to get to LOW 13s I have a stock 6.0L with the mods in my sig. If you do a cammed 5.3L with a few more psi I think you will easily make up for the displacement difference between our trucks. Add the converter to that and I think you will be very close to your goals. Then it might be a matter of a few smaller mods to push you over the top.
I will use my truck as an example for the 4L65E since it is the same weight as yours. With the RADIX at 7.5psi or so and the other mods in my sig I was making around 530flywheel hp give or take to go 13.25. The transmission was fine for a while with just the Magnuson tune. I don't know really how many miles it has with the blower but, probably between 5-10K miles. It slipped going into third the last time at the track and was on a 13.0X pass too.
I also daily drove the truck but, was not too bad on it, maybe 5-6 WOT blast a day. That was a completely stock internal 4L65E with just tuning.
A built one will last longer but, you just have to figure it as a wear item at these power levels IMHO.
There are a couple of 4L80E swap threads on here but, I remember you saying you don't have a lot of time to be online. I will look for some and post the links tomorrow.
Now, to get to LOW 13s I have a stock 6.0L with the mods in my sig. If you do a cammed 5.3L with a few more psi I think you will easily make up for the displacement difference between our trucks. Add the converter to that and I think you will be very close to your goals. Then it might be a matter of a few smaller mods to push you over the top.
Also remember that you're starting with a drive train that is superior to the stock silverados. You have a 6.0, a beefier transmission(not by much, but still beefier) and you have 4.10 gears. SilveradoSS' run high 14's to VERY low 15's stock. Most z71 ecsb trucks run 16.xx and I've even seen one in the 17's.
$15000 seems like an awful lot but how much do people spend on a transmission that can hold a 12 second truck? Usually about $3000 for an FLT level 5 plus a converter. So you're in about $3800 for just the transmission
How much do people spend on their engine to run 12 second truck? Most people use a power adder which at the cheapest runs $4000(STS kit).
How much do people spend on a tune, gears, cam, meth kit-That stuff right there is a good $3000 if you do it right.
That's the bare minimum stuff right there and we're at $10,600. Now if reliable means "I just want it to run" then there's not much else to do, but reliable could be interpretted as "I don't want to skimp out on anything."
Stuff like an intercooler, methkit, wideband, built tranny, bigger injectors aren't MANDATORY, but you'll kit yourself when you blow your #7 cyclinder.
Sep 13, 2007 | 08:08 PM
#65
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The 5.3L is lower compression and can handle a couple extra psi safely I would say, especially if a meth kit is involved.
If he goes turbo he can keep the gears because they will help put load on the turbo, lower ratio gears are not usually better for a turbo application.
If he goes turbo he can keep the gears because they will help put load on the turbo, lower ratio gears are not usually better for a turbo application.
Sep 13, 2007 | 08:12 PM
#66
Originally Posted by XLR8NSS
The 5.3L is lower compression and can handle a couple extra psi safely I would say, especially if a meth kit is involved.
If he goes turbo he can keep the gears because they will help put load on the turbo, lower ratio gears are not usually better for a turbo application.
If he goes turbo he can keep the gears because they will help put load on the turbo, lower ratio gears are not usually better for a turbo application.
Sep 13, 2007 | 08:15 PM
#67
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From: Corydon, IN
Originally Posted by RandomHero
You're right about the gears, all my point was was that SilveradoSS' have a 1.5-2 second head start over the z71 ecsb silverado's from the factory. That's a pretty good time to make up much less knock 4 seconds off your 1/4 mile(16.5 or so down to 12.5).
This is turning into a good discussion, keep the info coming people.
Sep 13, 2007 | 08:23 PM
#68
Originally Posted by Slow91z
True but with a cam and a STS kit (or any forced induction) the only advantage the 6.0L would have is the bore size...At least that I can think of.
Originally Posted by Slow91z
This is turning into a good discussion, keep the info coming people.
Sep 13, 2007 | 08:24 PM
#69
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I think kbracing96 and WJ MARK have good examples of what ECSB Z71's are capable of with 5.3 and 4.8L engines. They may be slower when stock than a 6.0L SS but, it is not a linear progression when picking up time in the 1/4.
KB
https://www.performancetrucks.net/fo...er.php?u=25675
WJ
https://www.performancetrucks.net/fo...p?userid=66620
KB
https://www.performancetrucks.net/fo...er.php?u=25675
WJ
https://www.performancetrucks.net/fo...p?userid=66620
Sep 13, 2007 | 08:25 PM
#70
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From: Corydon, IN
Originally Posted by RandomHero
Well yes and the transmission like stated. If you plan to leave your transmission stock and your gears then knock off $4000 from the price, but that takes out a TON of reliability.
It's because I got yelled at
It's because I got yelled at