why are you running so rich? it appears your AFr is 11.0 for the majority of the run... any idea on how much timing your running... Also i think your probably maxing out the injectors whether trick flow or your tuner says so.... hell my H/C 4.8 maxed out the stock injectors....

 

Nice numbers for sure! But I agree that there's more in the setup. AFR should be in the mid to upper 12's on a N/A setup like yours. This will yield a big gain. I'm also curious about how much timing you're running, and what your injector duty cycle is.

I bet it's an animal on the street.

 

much bigger cam and stall please

 

15-16mpg w/ mixed driving, i like it ok on the street, but the stall combined with the low torque/peaky small cube n/a motor make it a pretty dull drive unless i find myself in the right gear and really put my foot into it. if i had a do-over, i would definitely go for more cubic inches....but i have a low milage truck (35,000) and wanted to build on what i have

good points, i don't have the answer, lmr scheduled me for a friday (thier busiest day) and my truck is stupid when tuning--have to unplug bcm when flashing pcm, and then sometimes it still doesn't want to take???? The guy tuning it appeared to have a cold and seemed to be irritated with how my truck was acting. maybe on a good day, he would have been able to nail it...

i don't have the answers, i didn't want to bug the tuner more than i already had, see above! lol The truck feels best when punching it at 30mph, catching the top of 1st gear and barking the tires when it shifts to 2nd

 

I predict a broken output shaft in your future.

 

Honestly to me if your happy with the performance of the mods just enjoy it. Did you happen to have a before dyno # also?

 

Please soften tyour 1-2 shift...either by tune, or re-install the corvette servo...it will hold 2nd gear plenty...you can have a firm'hard 3rd gear shift, but you do want to avoid any type of harsh 1-2 shift.

 

Yeah there more left in her, the cam is small but ok, with an upper 220s cam and a spot on tune 400 should be vary doable, those heads are about the best you will find for a 5.3.

 

Well last night was dissapointing ti say the least...14.10 @ 98.8 was the best i could get out of her, 2.2 60' trying to drive out of the hole without too much spin. I know i need some sticky tires, but i was hoping for 13s street tires/12s on slicks not 14s/13s. weather was mediocre at best 700 da, very humid...and i did leave too much gas in the tank...a 13.9x maybe possible on a good day. At least i was faster than the 6.0s that were there

 

Thats not a bad start but there has to be more in the tuning or something, I could understand the time with your tight converter and street tires but the mph should be higher, I ran 13.4 @ 100 with just a 221-221 cam and a 3600 stall and boltons in 2500da. Whats your trucks waight? what shift points?