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  1. Jims86

    carburated vortec 350

    That, I am not sure about. But, it's worth looking into.
  2. Jims86

    Low throttle bog

    Check the float level...very critical.
  3. Jims86

    87 R10 Cuts off at stop lights

    First, check for a leak in the vac line going to the map sensor, if its ok, get another sensor.
  4. Jims86

    454 id

    GM Performance or Taylor wires are really good options.
  5. Jims86

    carburated vortec 350

    Dont forget to swap the dizzy gear for a roller cam gear.....that should do it!
  6. Jims86

    87 R10 Cuts off at stop lights

    18-20 un regulated, 9-13 regulated at TBI. O2 is the only one ignored until closed loop. Quick way to check for a bad in tank hose, Is to hook up a pressure gauge at the filter. Lst guy that did it, only got a reading of 8 Psi, and when he dropped the tank, there was a pinky sized hole in the hose,
  7. Jims86

    1993 Chevy Silverado solid axle

    Good luck with that.
  8. Jims86

    87 R10 Cuts off at stop lights

    Its already programed to close all the way when the throttle is closed for a certain amount of time, at slow decelleration.
  9. Jims86

    87 R10 Cuts off at stop lights

    Thats where the VSS and IAC work together the most. As the vehicles speed reduces, the IAC stays open a little more so the engine doesn't stall. Then after stopped, Idle settles to normal after a few seconds.
  10. Jims86

    87 R10 Cuts off at stop lights

    Remember when carbs had the vac operated throttle kicker to keep the throttle from slamming shut and stalling? This is similar.
  11. Jims86

    87 R10 Cuts off at stop lights

    Would be big time loss of driveability. Only stalling on stops.
  12. Jims86

    Irish's pickup from hell, the 454SS.

    Nice!
  13. Jims86

    Stalling when stopping..

    Thats about it really. Unless you have a tach. Does it sputter off, or does it seem like when someone doesn't put their foot on the clutch in a stick at a stop? Doesnt have to be 50, supposed to lockup at about 38.
  14. Jims86

    Stalling when stopping..

    Sounds like a VSS issue(vehicle speed sensor) and / or a very dirty/ lazy IAC ( idle air control) valve. Retro could be right to, but to check, go out and drive at 50 mph, and while listening to the engine, tap the brake just enough( keep your foot on the gas) to activate the brake lights, and...
  15. Jims86

    I am screwed!

    If it was a dizzy meant for roller cam, it may have chewed the drive teeth on the cam.
  16. Jims86

    Low throttle bog

    Is silvy giving you problems?
  17. Jims86

    hp freed up

    Nope. if you are running mid or long tubes, I consider a 3 wire heated O2 sensor a must.
  18. Jims86

    Need help identifing items on engine

    Choke circuit on carbs, fuel pump interrupt on EFI.
  19. Jims86

    Rotten Egg Smell From Exhaust

    Sounds right, maybe a lil sweet smell is ok.
  20. Jims86

    Rotten Egg Smell From Exhaust

    LOL, I am 2 miles from I-5, its the 300 mile trek down 5 thats the problem!
  21. Jims86

    87 1500 Not Getting Power to TBI Injectors

    Those wires go to the ECM B fuse, he has an electrician typ dude that is going to see if there is a break in the wire(s) somewhere. maybe a bad connection at the firewall plug cavity.
  22. Jims86

    Rotten Egg Smell From Exhaust

    Yup, and a good way to check thte pattern, is to hook up antiming light to the coil wire, and point the light at the injectors. No No on the heavier regulator spring, either replace, or have the injectors sonically cleaned.
  23. Jims86

    Rotten Egg Smell From Exhaust

    Do a compression check, look at the plugs. Maybe got some high sulfer gas too...dunnonhow that would happen in Cali though. Usually happens when you floor it.
  24. Jims86

    Low throttle bog

    You can test the egr the same way you tested the vac advance. You should check the thermal vac switch that operates it as well. Should be closed when the truck is cold. You can also pull the vac line from the egr, and plug it with a golf tee or a pencil, then go drive it, and see what...
  25. Jims86

    hp freed up

    Maybe 10. Big ticket on sbc heads is to open up the exhaust ports.

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