Jeep 6.0/4l80e dyno
Jeep 6.0/4l80e dyno Finally got the motor tuned in my jeep, now just need to finish it up.
Motor started as a 2004 lq4 and has 317 heads. I had it completely rebuilt with mahle forged pistons running 9.75 compression. This was a builder error because I wanted 11:1 but he screwed up and didn't check my head castings.
Anyways upgrades are a FAST LSXRT intake, LS6 cam, springs and Texas speed push rods. Stock rockers. Sanderson headers with a custom 3" from the headers back cat back.
I'm currently running the stock fuel injectors and my tuner says I'm starting to lean out a little past 5500. Granted i will probably rarely see that rpm. I'm looking at upgrading to the 8.1 marine 42lb injectors, just not sure if the stock 06 fuel pump (58psi/110lph) and 5/16" fuel line will work with the larger injectors.
Any suggestions or reason why my hp numbers would be greater than the torque numbers? I know that's common with imports but expected higher torque numbers than hp.
Rolling stock is a 4l80e/ 241OR transfer case and 35" MT's geared at 4.88:1.
Came out to 277rwhp and 243ftlb.
Trying to figure out how to post the images.
Motor started as a 2004 lq4 and has 317 heads. I had it completely rebuilt with mahle forged pistons running 9.75 compression. This was a builder error because I wanted 11:1 but he screwed up and didn't check my head castings.
Anyways upgrades are a FAST LSXRT intake, LS6 cam, springs and Texas speed push rods. Stock rockers. Sanderson headers with a custom 3" from the headers back cat back.
I'm currently running the stock fuel injectors and my tuner says I'm starting to lean out a little past 5500. Granted i will probably rarely see that rpm. I'm looking at upgrading to the 8.1 marine 42lb injectors, just not sure if the stock 06 fuel pump (58psi/110lph) and 5/16" fuel line will work with the larger injectors.
Any suggestions or reason why my hp numbers would be greater than the torque numbers? I know that's common with imports but expected higher torque numbers than hp.
Rolling stock is a 4l80e/ 241OR transfer case and 35" MT's geared at 4.88:1.
Came out to 277rwhp and 243ftlb.
Trying to figure out how to post the images.
Thanks. Once I get the fuel issue fixed I'll have some better numbers and can get more aggressive with the tune. As it sits right now my tuner said it's starving for fuel.
Stock pump is only 109lph, so the walbro should be the final touch.... And then to start saving for the magnacharger.
Stock pump is only 109lph, so the walbro should be the final touch.... And then to start saving for the magnacharger.
Teching In
Joined: Dec 2010
Posts: 19
Likes: 0
From: chi-town
not too bad.
my s10 was just tuned/dyno'd at Modern Muscle (IL) and put down 310. was pretty happy with the #s since it's just cam/headers/tunes (stock heads for now). dyno'd with 35s as well, going through 1 tons, atlas and th350
normally has 42s on it
can't wait to see what we gain once the new heads go on
my s10 was just tuned/dyno'd at Modern Muscle (IL) and put down 310. was pretty happy with the #s since it's just cam/headers/tunes (stock heads for now). dyno'd with 35s as well, going through 1 tons, atlas and th350
normally has 42s on it
can't wait to see what we gain once the new heads go on
Last edited by 1TFROT; Apr 13, 2014 at 09:43 PM.
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On The Tree
Joined: Aug 2010
Posts: 108
Likes: 12
From: Cedar Park, TX
-Sell 317s
-Install clean second-hand 243s
-Replace valve seals (cheap)
-Consider milling for 11:1 or greater
-...
-Profit
Stout looking TJ! I love the 03-06 Rubicon TJs. Respect for putting a LS in it and not a rainbow Hemi. :p
-Install clean second-hand 243s
-Replace valve seals (cheap)
-Consider milling for 11:1 or greater
-...
-Profit
Stout looking TJ! I love the 03-06 Rubicon TJs. Respect for putting a LS in it and not a rainbow Hemi. :p
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