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  1. Jims86

    87 R10 TBI injectors will not spray

    Guys, one more thing to check when problems like this occur, is the small rubber hose between the fuel pump, and tank outlet tube. Over time, these will develop a hole, and is the worst thing to diagnose. It's one of those "outta site, outta mind" things that will leave you with a lot less than...
  2. Jims86

    87 R10 TBI injectors will not spray

    Replace that injector with the EXACT size...do not go bigger.
  3. Jims86

    Has anyone ran 4" pipe one a 350?

    You will loose a crapload of low end torque. No bigger than 3" for single, dual 2.25 for duals on a stock-ish engine.
  4. Jims86

    350 starting without fuel pump relay.

    The fuel pump relay is only for the 2 second prime shot in these vehicles. If your oil pressure comes up quick enough, it will activate the pump. If oil pressure goes dangerously low, it will kill the power to the pump...unless the wiring has been dicked with.
  5. Jims86

    87 V10 5.7 Runnin rough

    This is especially true now, since the Vortech intake manifold does not have an exhaust crossover to heat up the air fuel mixture when it enters the manifold. Hot Rod, the vortec has a higher flow rate than the TBI heads, and more volume, wich throws everything outta whack with the stock TBI...
  6. Jims86

    87 V10 5.7 Runnin rough

    Nope, at this point, that stuff doesn't matter...the fact that he has vortec heads without the proper tune is the big ticket issue...probably didn't install EGR Anyway. Correct. Split hoses usually bring the pressure down to carb spec..8 and under
  7. Jims86

    87 V10 5.7 Runnin rough

    Foamy Nailed it! The tune is the problem most likely. I would recommend an adjustable regulator and 14psi. Contact Eldon at Wester's Garage in Canada, he may have a tune loaded and ready to go...at least I expect he would, as Vortec heads are a popular swap. The only alternative, which is labor...
  8. Jims86

    engine running funny

    Agreed Rich, I usually recommend a more stocking timing setting while troubleshooting...then when everything is at a good baseline, the Ping is the limit!
  9. Jims86

    engine running funny

    Ok, when you say you have the Holly 600 clone, is the float adjustable like a Holley? This should be correctable, and it sounds like the float may be too low. Holleys are the best aftermarket carb out there...and, I think the summit is made by Holley anyways. I like to use the clear sign plugs...
  10. Jims86

    engine running funny

    I haven't sorted through this thread, but have you confirmed that your balancer has not slipped, causing the timing to be set wrong?The only reason I ask, is because you said there was no black smoke to indicate a rich bog, but, if it was a Lean issue, there would be pinging, and possibly...
  11. Jims86

    350 TBI weird idle and deceleration issues

    Throw a new fuel filter on while you're at it.
  12. Jims86

    350 TBI weird idle and deceleration issues

    Ok, Cool. The ECM activates the light on any trouble code to report, however, you will only get it for a troubled sensor, OR IAC. you will not get codes for Fuel issues, like pressure, fuel pump, bad injector/spark misfire. Sensors do get lazy though, and until they meet a pre set threshold...
  13. Jims86

    350 TBI weird idle and deceleration issues

    If the check engine light does not illuminate when you turn the key to "on", the bulb is likely to be toast. I would start there, and also inspect the wiring/or any plugs on the Vehicle speed sensor, which is located in the tailhousing of the transfer case. Inspect the wiring at the IAC as well...
  14. Jims86

    what muffler do you use?

    Magnaflow, or any straight through types of full body muffler. Screw the Flowmaster gimmik bullshit. Stuff eventually rusts, and comes loose. Length will dtermin volume...the longer, the quieter.
  15. Jims86

    How to repair a cut dash without welding

    Exactly. I just couldn't find a square at any of the yards to get a donor piece.
  16. Jims86

    How to repair a cut dash without welding

    That pissed me off so bad about my Burb. I ended up just riveting a steel plate over the mess, after custom fitting it to my stock radio.
  17. Jims86

    !987 350 tbi

    Shouldnt be. Performance depends on which heads were installed. TBI heads have a swirl ramp in the intake port, which promotes low end torque.
  18. Jims86

    Using stock speedo VSS in place of transfer case output VSS?

    Pin F8 on the blue PCM plug, grey and black wire goes to the 4wd indicator to alert the PCM what range the transfer case is in. Shouldnt be an issue as long you have it hooked to the indicator, which would be the hot lead to the indicator bulb.
  19. Jims86

    305TBI to 350TBI

    The Aftermarket EFI systems, like Holley, and FAST will self tune for mods, an OEM system wont. I replied to your pM, i dont show up here much anymore. If Carb is what you really want, go for it, but take my air cleaner recommendation into consideration...very important when operating in cold...
  20. Jims86

    Getting the TBI running again

    Yupper!
  21. Jims86

    Getting the TBI running again

    That first one is the diverter valve control from the ecm. Th green wire with plug may be for the AC...like a test port, or, if you dont have AC, that plug is left there from the removal. Its the power wire for the AC clutch. That single wire black connector looks like it might be the O2 plug if...
  22. Jims86

    1986 CCC 454 Convert to TBI 454

    Yup, the relay that sits next to the fuel pump relay is for the 400/3L80 kickdown.
  23. Jims86

    1986 CCC 454 Convert to TBI 454

    The difference is just in the harness, two wires for the IAC are swapped from the small block positions. If the. If the TBI unit is from a 94-95, you will need to run a TPI pump.
  24. Jims86

    going to carberater from tbi

    tming is 0* on TBI small blocks, set to at least 4* for carbed.
  25. Jims86

    Tbi to carb.

    You dont need to worry about the TPS stuff... just the throttle adjustment. Takes less than 10 minutes if the engine is warm.

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