second opinion before i turn the key

[Hillbilly]

Ok, a little background first. Got the truck from a junkyard, 1992 K2500 HD. 5.7, 4l80e, 4.10's, $85 ecm. Engine wasn't original, ended up spinning a bearing a year later. Got another 5.7 from a different junk yard. Decided to tear it apart and rebuild it. turns out it had been rebuilt before. So I now have a 357sbc, with ported stock heads, 2.02/1.60 valves, flat top pistons, new crank, new rods, new roller rockers and springs, summit sum-1102 cam, long tube headers, edelbrock torkerII intake, 454 TBI with an adapter plate to bolt onto the carb intake, and 65# injectors (i also have the 454 injectors). I ran the intake/carb/injector set up on the first motor and it ran wonderful. But with the new engine upgrades, especially the cam, the chip NEEDED redone. I've done some initial changes thanks to the forum, and was just wondering if anyone has any suggestions, and if they could peruse over what my file before i plug the chip in and start the truck for the first time. I got a new fuel pump too that puts out 15psi, and a few spare TBI's so i can make up an AFPR for fine tuning once we get the truck rolling. thanks for any and all feed back guys!!

[dave w]

Would you be willing to post your files for us to look at? .bin / .adx / .xdl

dave w

[Hillbilly]

Oh shit haha I forgot to upload it all. I'll get it uploaded when I get back home.

[Hillbilly]

Here ya go

[EagleMark]

Can I ask why the 65 lb/hr injectors are being used over stock ones that flow more?

Stock should be 74 lb/hr or 80 lb/hr...

[dave w]

I'm wondering about the math used to figure out the BPW of 103?

A stock $85 5.7 liter has a BPW of 135. I'm not sure a BPW of 103 is correct (seems to low) for a 5.7 liter using 65 lb injectors / 15 PSI fuel pressure.

The attached .bin file is a baseline performance chip I did for a stock $85 5.7 liter. The added 4 degrees to the entire spark table for the stock engine might be something that would help your engine?

dave w

[Hillbilly]

Can I ask why the 65 lb/hr injectors are being used over stock ones that flow more?

Stock should be 74 lb/hr or 80 lb/hr...

The STOCK injectors were 55 lb/hr lol. I have the 454 injectors in the garage, planned on putting them in once the motor was all hooked up. The 65 lb/hr are in it because the intake/tbi setup is same I used on the stock 5.7. But after all the mods (cam, valves, bore) I figured I'll have to use the 454 injectors.