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  1. C

    Spark plug gap closed fresh rebuild

  2. C

    Spark plug gap closed fresh rebuild

    Sorry have been busy, I checked the cylinder and looked good with bore scope. The timing was way too far advanced, the tbi computer was putting it way out of spec. I got the timing right and all is good, plug looks good and no misfires
  3. C

    Spark plug gap closed fresh rebuild

    I didn't notice any chunks hanging around in the cylinder with the bore scope. There was small pock marks on top of the piston and some carbon flakes I believe. What should cranking compression be and do I just remove that plug for the compression test ?
  4. C

    Spark plug gap closed fresh rebuild

    Motor turns over fine by hand, I bought a bore scope and looked in there and saw a few black pieces very small and couldn't tell what it was. Could it be carbon ? The cylinder walls look pretty clean but seemed like the crosshatch looked a little deep. Didn't notice any gouges or chunks...
  5. C

    Spark plug gap closed fresh rebuild

    Does it go into spark plug hole ?
  6. C

    Spark plug gap closed fresh rebuild

    Sorry for lack of info, this was professionally rebuilt by local shop just a stock tbi 350, I changed all the plugs after break in and this didn't happen. I went to drive it and it ran like crap under load in gear, as changing plugs again this is what I found. I am hoping it is timing because I...
  7. C

    Spark plug gap closed fresh rebuild

    Others maintained their gap, these are just stock tbi heads
  8. C

    Spark plug gap closed fresh rebuild

    Uh oh, fresh rebuilt tbi 350 just changing the plugs and noticed #2 plug gap closed. Engine also runs rough under load, bad timing maybe ? What am I in for ? Any help appreciated thanks !
  9. C

    1987 Chevy v10 parasitic draw

    So the alternator is hot to touch with vehicle off, disconnected it this morning and will confirm if that stopped the voltage drop this afternoon. I am assuming that is the problem, I have a wire running from back of alternator to the starter lug and the plug is plugged in back of alternator...
  10. C

    1987 Chevy v10 parasitic draw

    Hey guys, so I am restoring a 1987 Chevy v10 with TBI, the truck will sit overnight and the battery will be completely dead next morning. I noticed the ECMB and horn/dimmer fuse are constantly hot with the truck off. Any tips on how to locate the draw ? If it's one of those two circuits how...
  11. C

    Mystery plug and wires

    Makes sense, thank you
  12. C

    Mystery plug and wires

    Thanks so much ! Where does that cruise control plug go into ?
  13. C

    Mystery plug and wires

    Hello all, I am working on 1987 Chevy v10 pickup and wondering what these connections are. This plug has a grey, pink/black, blue and green wire and someone put a spade connector to it with a cut wire. Other connection in question is orange and white wire that are stuck together, looks like...
  14. C

    1987 Chevy v10 fires but won't stay running

    What I did was remove the IAC and manually close it, put it back in and started up fine, was not throwing any codes. This iac was new but Chinese brand I think, I bought a standard motor products one I couldn't find a Delco replacement
  15. C

    Heater box removal question

    That's perfect thank you !
  16. C

    Heater box removal question

    Any way to remove the big ugly box on the firewall and keep heat ? I don't care about AC in the future I will probably do vintage air, want to keep heat but remove that heater box on firewall, any help appreciated!
  17. C

    Rebuilt TBI 350 coolant in oil

    How long and what pressure to set the tool to ?
  18. C

    Rebuilt TBI 350 coolant in oil

    Held it for 25 minutes in a certain position so the fitting wouldn't leak
  19. C

    1987 Chevy v10 fires but won't stay running

    Hey all, 1987 Chevy v10 will pop off but won't stay running so it's basically not starting. Issue is intermittent, timing is good because it ran fine on this timing last week, I replaced ICM and ignition coil. I am getting spark and a good fuel spray through the injectors. This is the TBI...
  20. C

    Rebuilt TBI 350 coolant in oil

    I did this and didn't see any water out of plug holes
  21. C

    Rebuilt TBI 350 coolant in oil

    Radiator is new, Isn't the transmission completely separate from engine ?
  22. C

    Rebuilt TBI 350 coolant in oil

    Hello all, recently purchased a remanufactured TBI 350 for my 87 Chevy 1/2 4x4. After initial break in, I noticed coolant in oil on dipstick and some white smoke out of tailpipe, decided to drain oil and saw coolant definitely in the break in oil. So I resealed the intake manifold and torqued...
  23. C

    1987 TBI tach install

    I have it plugged into accessory ? What's another example
  24. C

    1987 TBI tach install

    Where do I put the red lead for power exactly?
  25. C

    1987 TBI tach install

    Working on an 87 TBI motor just had built, bought a new tach and was wondering where to hook rpm lead to ? I am seeing some threads where guys have 3 leads coming off the coil. I only have what is pictured and figured the empty plug is where the tach green wire would go? It currently isn't...

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