Search results

  1. Bextreme04

    Another Oil Pressure Question

    Only the single wire to the sender on the back of the engine feeds the gauge. The oil pressure SWITCH provides power to the choke in a non-fuel injected truck. That wire provides a power feed to the sender from the gauge and the sender provides a variable resistance to ground, based on the oil...
  2. Bextreme04

    Intake plenum gaskets

    I've got the instructions at home for all the quadrajet setting instructions. I can post them tonight when I get home if I remember. Float level for all truck quadrajets as far as I've seen is supposed to be 3/8". You measure it by gently pushing the other end of the float arm down to set the...
  3. Bextreme04

    Intake plenum gaskets

    The correct method for tightening the carb bolts is: Tighten one diagonal set of bolts to 36 in-lbs (3 ft-lbs); tighten the other diagonal set of bolts to 36 in-lbs (3 ft-lbs); tighten all four bolts to 144 in-lbs (12 ft-lbs). This is shown on an inset drawing in the Chevrolet Chassis Service...
  4. Bextreme04

    Intake plenum gaskets

    She is south of Eugene. This is the same person I pointed to the Eugene squarebodies group on facebook and she had made contact with someone down there that was going to come out and look at it. Apparently he wasn't much help either I guess.
  5. Bextreme04

    Intake plenum gaskets

    You will need a new base gasket for the carb. They are cheap and available at the local parts store, Fel-Pro 60249 is the correct one for a 79' 400 quadrajet...
  6. Bextreme04

    TH400 Direct Drum/Sprag Question

    You won't need anything different for towing normal loads behind a mild 350.
  7. Bextreme04

    Mandrel exhaust shop

    This is also what I was going to say. I buy the bends in mandrel bent form so that I can cut and weld them as needed easier to get the smooth bends I want.
  8. Bextreme04

    Mandrel exhaust shop

    There are tons of "universal kits".. I just buy 3" mandrel U or J pipes and a few sections of straight pipe and cut/weld to fit.
  9. Bextreme04

    Header Gaskets

    I just put a set of the speed engineering long tubes on my suburban and the back bolt was broken off the passenger side. I couldn't get anything in there to extract it and it's getting the 6.2 put in it in a few weeks anyways, so I said screw it. Remflex gaskets and ICT billet header bolts and...
  10. Bextreme04

    Trim codes 77B and 77I

    That paint code "U7475" is the PPG code for GM paint code 72. GM called it Apple Red in 86', but it is also called standard Red or Bright red.
  11. Bextreme04

    1983 K10 saddle tank replacement with in frame tank

    My setup looks a lot like yours, except I bought the 31 Gallon Blazer tank with sending unit, crossmember, straps, filler neck, and all stock sheetmetal components locally for $40. If anything fails or needs replacement.. I can just go into any parts store anywhere and buy an OEM 87-91 Blazer...
  12. Bextreme04

    Trim codes 77B and 77I

    ZY1: I can't access the 1987 Vehicle information kit and the 86 one does not show that color in it. It does have 72 for a color. Is your truck a red single color exterior? If so, I would assume you have Apple red exterior with a Burgundy interior.
  13. Bextreme04

    79 k20 400 running rough, can't figure it out.

    That's great! I saw you post in the group the other day and was glad someone was able to come look at it. I'll PM you my info on the group so you have it in case they can't get it going or you need some more help on it. I know a few people down that way that are pretty good with the squares and...
  14. Bextreme04

    1983 K10 saddle tank replacement with in frame tank

    Boy, they sure are proud of that setup... $850 is wild
  15. Bextreme04

    79 k20 400 running rough, can't figure it out.

    That's a bit low. You might have junk in the tank clogging up your pickup screen or maybe a worn fuel pump eccentric on the cam that isn't giving a full fuel pump stroke. I'm still leaning towards the carb needing lots of adjustments or having something wrong with it though. The fact it needs...
  16. Bextreme04

    79 k20 400 running rough, can't figure it out.

    Those are a stock-ish replacement as far as thread and length... but they are a MUCH colder plug. I don't think it is your actual problem, but it could be making your actual problem more visible. The R44TS or R45TS are the correct factory plug with a heat range of 4 or 5 respectively. The...
  17. Bextreme04

    79 k20 400 running rough, can't figure it out.

    That's a good point on having the RIGHT plugs. I run AC Delco R44TS or R45TS gapped at .045" on my non-vortec SBCs that are using HEI. Same plug in my 70 Buick 455
  18. Bextreme04

    79 k20 400 running rough, can't figure it out.

    You can't adjust it without it being installed on the vehicle. I have the original quadrajet on mine and I rebuilt it myself a few years ago. They should have set the float height on the vehicle and then done all of the linkage and choke adjustments at that time too. It should take a single pump...
  19. Bextreme04

    79 k20 400 running rough, can't figure it out.

    Where are you at in Oregon? If you are close to Salem, it's probably easier for us to just meet up and I can run through your Q-jet and show you haw to troubleshoot and adjust everything. You can rent a fuel pressure test kit from autozone or oreilly that has the T-fitting to put it in-line...
  20. Bextreme04

    What have you done to your square lately??

    You could probably do almost the same thing for the shell. Line it with a single layer of killmat and closed cell foam, then put up a headliner over the top of that just like a suburban would have. You could probably just cut the closed cell foam to size and then attach fabric straight to that...
  21. Bextreme04

    TH400 Information Thread

    Yeah, basically. They share quite a few parts. I'm sure Nick could give actual specifics, but I know that some parts are shared. My K25 TH400 has the original truck VIN stamped on it and I don't even think it has ever been rebuilt. When I did the engine rebuild a few years ago I found the...
  22. Bextreme04

    Header Gaskets

    I'll put in one more vote for Remflex... they really can't be beat. I have them on my 350 and my LS motor with headers. No leaks at all.
  23. Bextreme04

    TH400 Information Thread

    Lots of the parts are the same between the TH400 and 4L80. I've got a 400 behind my stock high compression 1970 455 that was rated at 370hp/500ft-lb and it has no performance upgrades at all. Runs and shifts great.. no issues ever. My 1980 K25 still has the original Th400 and I regularly tow...
  24. Bextreme04

    TH400 Information Thread

    Having done a few of my own rebuilds now... my personal recommendation will be to take the whole thing apart and inspect for obvious damage, then put all the parts in a plastic tote with the stripped case and head down to your local transmission or machine shop. Give them a few bucks or a case...
  25. Bextreme04

    No fuel in carb at start up

    In your fuel pump. If the carb is also empty... then you have a leaky needle and seat in the carb as well. Generally you should still get fuel into the filter within a few cranks if the fuel line doesn't have any holes in it.

Forum statistics

Threads
44,162
Posts
950,641
Members
36,275
Latest member
2manysquares2care
Top