Is the truck tuned? May want to take out some more torque management...

 

Na I haven't tuned it yet, mainly because i just built a fresh L33 5.3 with some 243 heads (flat-tops should be around 9.9cr) and a 212/218 comp low lift. Also got some 4.10's, Crane 1.8 rockers and Pacesetter LTs that will be all installed when new engine goes in.... hopefully all that ant TB stall will help get it moving a little better than my little 4.8..

Think i can get some 13's with all that

 

I was mainly concerned that i have something else wrong with the truck making it such a turd and wanted to try to fix it before new setup is all installed.... sounds like wheels seem to be the new culprit

 

I ll have to throw my two cents in. I replaced my fuel pump at 60K, then 4 years later (last week) replaced it at 155K. Both times It still ran, but it would spit and sputter, wouldnt shift right, hard to start....it never just went completely out. I change the fuel filter regularly, and changed plugs and wires on it before I did the second pump.....but replaced the pump again and it runs strong again! It could definetely be fuel pressure, as well as tires.

Please change your fuel filter regularly, we changed my buddies 2000 5.3 the other day, it was the stock ACdelco filter, and you shouldve seen all the crap that came out of it. Runs a whole lot better.

 

hmmm....Yeah i think i have heard of pumps weakening and dropping fuel pressure..i really need to put a gauge on it and see how the pressure looks all over the board.

 

I agree the heavy wheels will slow you down, especially from a stop. Your CAI and catback aren't helping either. Those are upgrades meant to add Hp up top, the stock stuff would have been best for low end torque.

If you tune for the mods and cut out most of the TM it will help alot. But since your throwing in a bigger engine with a decent sized cam, you might as well wait to tune it when that goes in. I think you'll be happy once the engine is in and its tuned.

I agree that you should make sure your FP is up to the task to feed your new engine.

 

Thanks Silverado53, yes i do want to make sure the truck is up 100% before i go changing so much to the truck and getting a tune.... I know it wont be a beast but im hoping with that combo is will be a great DD and surprise a few stockish mustangs and trucks that seem to want to test me

 

how often should a fuel filter be changed?? what about injectors.. do u guys clean'em using the fuel additive thingy..

.

 

I change my fuel filter about every 10k miles, like said above they can get dirty QUICK.... as far as injector cleaning...throw a bottle of lucas or seafoam in the tank about every or every other oil change and that will keep it pretty clean.

 

I would say it could be the cats that are getting clogged. Unless the fuel filter hasn't been changed. +1 on changing every 10,000. You will feel a huge difference in how it runs.