A Little Disappointed
07-30-2015, 06:09 PM
#1
A Little Disappointed
I recently completed a 6.0 4l80 swap on my 02 reg cag Z71. The engine is a low mileage stock bottom end with patriot 317 heads and comp cam. The cam specs are 226/222 on 115. Tranny is pretty much stock with a shift kit and a Circle D torque converter(3500). Now for the disappointing part. I recently had it tuned and it runs and drives great , but just feels really slow. It will not even peel out from a dig. I know that the totally stock exhaust and stock injectors are not good for performance, but I still expected more. My totally stock 5.3 Extended cab with a yank 3000 ran much better. This build is not ment to be NA., it will be turbocharged soon. I would hate to bolt the turbo on and it be this boring down low. After all that why I chose the 4x4. Any thoughts?
07-30-2015, 06:53 PM
#2
TECH Junkie
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It should be able to easily peal out no problem my 4.8 with just intake exhaust and tune will smoke the tires all day from a dig.
What gears and what tires are you running? and post a pic!
What gears and what tires are you running? and post a pic!
07-30-2015, 07:10 PM
#3
Wondering did you degree the cam ? I had one recently 6 degrees out and had to get an adjustable timing chain\gear set or fight the battle of returning and waiting weeks.
If it was out a lot, you could certainly have a Dog Motor. Just food for thought on what could be a long list of possible things to make it slow
If it was out a lot, you could certainly have a Dog Motor. Just food for thought on what could be a long list of possible things to make it slow
07-30-2015, 09:38 PM
#5
Combo is all botched up so I'm not sure what exactly you're expecting. Even a fully functioning 6 liter setup n/a is a turd.
Also, if you're not familiar with the 80e, going from a 60e is a dramatic difference in 1st gear due to the different gearing between the two trans. It's like compared a sprinter to a slug off the line, you need power to light it off.
Who's tuning it?
Also, if you're not familiar with the 80e, going from a 60e is a dramatic difference in 1st gear due to the different gearing between the two trans. It's like compared a sprinter to a slug off the line, you need power to light it off.
Who's tuning it?
07-30-2015, 09:47 PM
#7
Combo is all botched up so I'm not sure what exactly you're expecting. Even a fully functioning 6 liter setup n/a is a turd.
Also, if you're not familiar with the 80e, going from a 60e is a dramatic difference in 1st gear due to the different gearing between the two trans. It's like compared a sprinter to a slug off the line, you need power to light it off.
Who's tuning it?
Also, if you're not familiar with the 80e, going from a 60e is a dramatic difference in 1st gear due to the different gearing between the two trans. It's like compared a sprinter to a slug off the line, you need power to light it off.
Who's tuning it?
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07-30-2015, 09:50 PM
#8
[QUOTE=George C....;5303988]patriot cams are junk
patriot heads suck and false flow numbers
80e is killing you big time
unless your over 500 rwhp then a 80e hurts ya[/QUOTE
It's a comp cam and patriot heads. I would not buy these parts today, but it's what I had laying around from an abandoned build back in 04. Just trying to run what I have.
patriot heads suck and false flow numbers
80e is killing you big time
unless your over 500 rwhp then a 80e hurts ya[/QUOTE
It's a comp cam and patriot heads. I would not buy these parts today, but it's what I had laying around from an abandoned build back in 04. Just trying to run what I have.
07-30-2015, 10:33 PM
#9
The first gear in the 80e is 2.48 and the 60e is 3.06 or something, so that's a huge factor on your dig runs! The truck should be pretty lively after you get the turbo on! I would run a lower gear either way, at least a 4:10 maybe even lower depending on what size tires you run
07-30-2015, 11:43 PM
#10
Trans is a lot of it and I don't like those big wide center cams like that for a heavy truck, and the reverse split is not helping power either. I run the triple 12 in my lq4 turbo 4x4 and love it. It will kill 33'' BFG's from a dead smash with zero boost.