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Type: Posts; User: Fast355

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  1. Replies
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    Anything with a 7.4 and the 7427 used a 46 lb/hr...

    Anything with a 7.4 and the 7427 used a 46 lb/hr injector @ 28 psi. Barely enough fuel to support a stock 5.7 Vortec much less anything making any power at all.

    I use 14.1 stoich on our E10 here....
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    I use the PE adder to add 4-6 up top. Actually...

    I use the PE adder to add 4-6 up top. Actually starts adding 1-2 as low as 2,600 when its in PE. I have found situations where you will be at high Kpa for a while and not need the fuel enrichment....
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    I will look for you. I think I may have a 1999...

    I will look for you. I think I may have a 1999 or 2000 G2500/G3500 5.7/4L80E file. From what I remember those two years use the same operating system. I used the 4L80E van file to segment swap a...
  4. I am not sure on the limp stuff for all the...

    I am not sure on the limp stuff for all the modules, never have tested a TBI one just going off what another found. I just know that the marine engines had a nice ramp when they advanced and assumed...
  5. When you are looking at an OEM junkyard module...

    When you are looking at an OEM junkyard module the 369 and 048 will clearly be stamped on top. Many fullsize G-vans got the 369 module in either a 4.3 or 350 V8. A lot of the TPI cars had the 369...
  6. They actually have advance built into them in...

    They actually have advance built into them in limp home mode. Alot of GM based carbureted marine engines use the TBI distributor and module in bypass mode. Alot of GM based carbureted marine...
  7. Thread: 94 Silverado

    by Fast355
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    362

    Maximum knock retard at that RPM when not in PE...

    Maximum knock retard at that RPM when not in PE perhaps? Possibly not real knock.
  8. I am scratching my head here as to how you are...

    I am scratching my head here as to how you are having a seal to lock clearance issue??? The locks sit above the lowest point of the retainer. What retainers were you running?
  9. Every set of stock vortecs I have messed with...

    Every set of stock vortecs I have messed with have had .490 to .510" clearance in OEM form after the seal was fully seated. Most are actually .510" clearance. With the 787 retainers it gave me...
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    Its a known issue with that dataloging software. ...

    Its a known issue with that dataloging software. That glitch happens when the timing advance goes Negative.
  11. Comp Cams are almost always ground 4* advance for...

    Comp Cams are almost always ground 4* advance for a small block chevrolet. Are you saying you advanced it another 4* for 8* total advance. 104 *ICL. Given the results from using various cams, I...
  12. The heavier GVW trucks with 350s and 454s have...

    The heavier GVW trucks with 350s and 454s have very prolonged power enrichment delays and very high throttle percentage required to enter PE. I have seen some as long as 60 seconds if the RPM does...
  13. I would look at your idle proportional gains and...

    I would look at your idle proportional gains and proportional duration. The gains and durations are designed to make the air fuel ratio swing rich and lean for proper cat operation. When you...
  14. I am a little different. For my roller cam small...

    I am a little different. For my roller cam small blocks. Mobil One in the pan, prime the system with a drill and priming tool, then start it up. Run it at 2,500 rpm long enough to get it warm and...
  15. Sorry, I did not see your last post until this...

    Sorry, I did not see your last post until this morning.

    I did a 454/4L80E dually just this last weekend.

    For the 4L80E I set it to lock under acceleration in 3rd gear and WOT lock in 2nd gear. ...
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    I had a water heated Holley Peojection 2" bore...

    I had a water heated Holley Peojection 2" bore carb to TBI adapter on my 2bbl Victor Jr Vortec intake.
  17. Get a copy of blue cats and remap the shift...

    Get a copy of blue cats and remap the shift points.

    For tow haul I set the preference to lock the torque converter in acceleration from 2-4th gear. Do that by setting acceleration lock to 2nd...
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    Sure its not a 200 or 250?

    Sure its not a 200 or 250?
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    Just get one for say a 1997 C1500 5.7. Upstream...

    Just get one for say a 1997 C1500 5.7. Upstream sensor preferably Delco.
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    Set the minimum temperature all the way up and...

    Set the minimum temperature all the way up and the RPM all the way low.
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    Fairly easy actually. Disable BLM and use the...

    Fairly easy actually. Disable BLM and use the Integrator to tune the same way you would BLMs. On OBD2, BLM is Long Term and Integrator is Short Term. Delay PE until 90% throttle like the factory...
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    I have yet to find big gains dyno tuning...

    I have yet to find big gains dyno tuning anything. I have also yet to see big gains tuning anything with a wideband compared to how I tune off the integrator. I did find about 25 ft/lbs at 1,500 rpm...
  23. The cam in my Express van degrees out at 218/228...

    The cam in my Express van degrees out at 218/228 @ .050 with the 1.7 rockers. 110 LSA on a 106 ICL. 0.578/0.578 lift. Idles at 700 rpm @ 60 kpa in Drive. In Park it idles at 750 rpm @ 52 KPA. It...
  24. My uncle had 94 C1500 2wd ECSB he bought NEW from...

    My uncle had 94 C1500 2wd ECSB he bought NEW from GM. At about 200K miles the timing chain went. I helped him pull it down and we resealed the valve covers at the same time. His factory original...
  25. You could always do what I did before cheap, good...

    You could always do what I did before cheap, good commercial widebands were available. Disablw the BLM and tune off the integrator alone. Integrator reponds much more quickly.
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