Recent content by L31MaxExpress

  1. L31MaxExpress

    How To: Ditch EFI and keep TBI PCM for 4L60E Control.

    More like 2-3 mpg in something the shape and aerodynamics of a van. The 165' is also prone to failures and the MAF GM used is absolute junk.
  2. L31MaxExpress

    R4 Scroll Compressor Experience

    I think my 87 S15 Jimmy had a turn on delay too, never bothered me much though. It is hot enough here, typically roll down the windows and blow the hot air out for a minute or two of driving, run the system on non recirculated air, then roll the windows up to where they are still cracked open a...
  3. L31MaxExpress

    R4 Scroll Compressor Experience

    The scroll is not very efficient at idle rpm. You will be good to go with the Sanden on a single cab IMO. I put the same 4261 Sanden SD7H15 that was on the dual evaporator system in my 1997 on the 1987 G20 with front dash air only. It cools great in that system. So good in fact that I found out...
  4. L31MaxExpress

    350 stroker build (ca smog legal?)

    A standard SBC balancer has to be cut down by the width of the reluctor, IIRC it is like 0.110" thick where it sandwhiches between the crank snout and balancer. I measured my specific reluctor before having my balancer cut down. Without cutting it down the belt alignment is a full groove off and...
  5. L31MaxExpress

    R4 Scroll Compressor Experience

    Wildblue19 and I both had cooling issues with the Sanden and dual a/c here in Texas summer heat.
  6. L31MaxExpress

    Driver side heated night shifting mirror glass

    They were, my 99 Tahoe LT has them. Power, self-dimming and heated.
  7. L31MaxExpress

    R4 Scroll Compressor Experience

    I have since figured out the SD7H15 only works well on a single evaporator sytem, forget trying to use one on a dual system, just FYI.
  8. L31MaxExpress

    New here. Header and exahust 97 5.7 c1500

    It is called the EPA and current administration going after businesses.
  9. L31MaxExpress

    L31 Extreme Budget Build

    Todays project just arrived and already have the passenger front door done. Taking a quick break but about to dig into the driver door. Out with the old, literally crumbled removing it thanks to years of Texas sun UVs and heat. In with the new.... I also have a Fairchild front glass run...
  10. L31MaxExpress

    99 L29 454 build

    I can tune one. If the EGR is turned off there is nothing to compensate for although I do zero out the EGR tables.
  11. L31MaxExpress

    Back fire through intake when floored

    Needs acceleration enrichment aka pump shot probably near double what the TBI system is calibrated for and also needs substantially more timing at low rpm and WOT aka high map. Also 14 psi will never be enough with stock 350 injectors. Needs more like 22-24 psi. I have fixed a bunch of them...
  12. L31MaxExpress

    Thermostatic valves for the TBI Intake

    Actually been looking for one of those to snag as well. Junkyards used to be full of them here.
  13. L31MaxExpress

    99 L29 454 build

    The 0411/P59 both base timing off cylinder air charge in the same manner the older GM MAF systems used the LV8 value calculated from the MAF. It truly is a better way to do it. Best suggestion I have is to use a stock 8100 tming maps. The one 7.4L I have tuned with an 0411 ran very well with it.
  14. L31MaxExpress

    Thermostatic valves for the TBI Intake

    Vortec fender swapped on maybe?
  15. L31MaxExpress

    Thermostatic valves for the TBI Intake

    The 454 air cleaner fits my small block with the L31 accessories beautifully, just need the darn matching later 454 G-van air duct. I had one on the 350 TBI in my 1983 G20 years ago, gave it away to a friend. Did not know at that point I would need one again, lol. It is a massive increase in...
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