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  1. L

    Been a little tinker crazy lately.

    Is it possible to get to 400 hp with stock lower end?
  2. L

    Been a little tinker crazy lately.

    I don't normally run 91 octane, read something about adding race fuel to tank to help clean poppets.
  3. L

    Been a little tinker crazy lately.

    Also forgot to add: Was having CEL reader said can't remember if random or high speed misfire (seam to always happen on freeway, just a little hicup. Runs normal other time). After mods to throttle body and spacer cleaned EGR friday add royal purple octane boost and 91 to tank. Light came on...
  4. L

    Been a little tinker crazy lately.

    I have 96 chevy C1500 with 5.7 with 237,000 w/ poppets still, I've had same upgrades on it since about 98-99 ish. Air intake, throttle body spacer, did cap and rotor, MSD wires, Flowmaster, and hypertech computer. Been tinkering with Throttle body and spacer, Bored them both out to 78 mm...
  5. L

    Writeup: Throttle Blade Removal Mod

    I got rid of mine a couple years ago for a AFE Dry filter and still have all this crap in the intake. it had to be almost a 1/4 inch thick on everything. Used a whole can of carb to clean, going to take it all a part again in a couple days and do some more cleaning. I have 228,000 on mine, i...
  6. L

    Writeup: Throttle Blade Removal Mod

    Wow if you have K&N filter, get rid of immediately. Went to do this mod today, and there was black thick soot all over everything. Cleaned everything up, going to did again soon. On to mod, tapered edge of blade too. Throttle response is well improved. Going to be doing some more throttle...
  7. L

    Long tube headers on 5.7 96 vortec

    All shorty headers EGR comes dirctlly from collector. http://www.jegs.com/i/Flowtech/387/91832-1/10002/-1 I think it will be better off coming dirctly off collector to make emission controls correct. Won't be that hard to run a 1 inch return tube.
  8. L

    Long tube headers on 5.7 96 vortec

    Would a tube that long have enough draw to get back to intake manifold? Should EGR tube extend into collector or just be fitted to outside with a hole?
  9. L

    Long tube headers on 5.7 96 vortec

    I want to run these headers. Has anyone modified them to work with 5.7 vortec SFI? Are exhaust ports same on TBI as SFI? http://m.summitracing.com/parts/pte-h8059 All O2 sensors are in Y pipe. All that would need to be added is a tube back up from collector to head for fitting to go in on...

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