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  1. S

    Low mile 1999 L29 parts for sale

    Stock parts from a 99 with low miles, reportedly 20k. Stock timing set, 3/8 inch pushrods, beehive valve springs and rotators. Give me $30 for shipping and you can have it all.
  2. S

    Derale PWM fan controller

    Has anyone tried this Derale electronic fan control? It sounds a lot better than just an on/off relay cycling all the time. https://derale.com/product-footer/electric-fans/fan-controllers/pwm-controller/16797-detail
  3. S

    Guys running headers, questions

    I went to a lot of work modifying cheap ebay headers to fit my 97 k3500/L29. Now I'm having doubts. Do headers burn up all the wiring and plumbing in sight, cook the floor and firewall, overheat the starter, etc?
  4. S

    Regulated fuel pressure

    The fpr watches manifold vacuum, and raises fuel pressure at low manifold vacuum. High vac means low throttle/cruise conditions, and low vacuum means more throttle, needing more fuel. But changing the fuel pressure doesn't make sense to me. The injectors will flow more of course, but the tuning...
  5. S

    Link Ecu's?

    I just heard about Link ecu's with a bunch of different models. What can they do better than a 0411? https://linkecu.com/products/ecu-comparison-chart/
  6. S

    97 K3500 auto down window switch doesn't stop

    I drilled out the rivets and took the regulator off the door panel today in 114 degrees. I don't know if I made a mistake or not, but I took the motor cover off when the mechanism was somewhere randomly in the middle of the stroke. The spring tension pushed the rotor out, then it shot the gear...
  7. S

    5.3 flex fuel injectors for L29

    What do you guys think of this injector for my hopped up L29? The flex fuel 5.3 is common, so the injectors are cheap! 12580426/25326903 02-06 tahoe flex fuel 5.3, 36lb/hr at 43.5 psi https://www.ebay.com/itm/264580434238
  8. S

    Tuners and "credits"

    What is the 'credit' thing? What vehicles need it? I'm guessing it's a bribe paid to the gov't to let you tune your ecm. Of course you should never modify a pollution controlled vehicle for the sake of all humanity, but for a $50 kickback, they will tolerate it. Am I getting warm? And what do...
  9. S

    99 L29 454 build

    I made a few posts on my 454 rebuild and hop-up in the general vortec thread that really should be in a new thread, so here it is.. My 97 K3500 extended cab dually has 230,000 hard miles, so I bought a L29 7.4/454 from a rolled suburban to rebuild and swap in. It allegedly had under 20k miles...

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