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  1. Slooptin

    Big block running hot. Can’t figure out the issue

    Appreciate the advice. Carb is running 11-12 afr at idle and will still get hot though
  2. Slooptin

    350 tbi running too cold

    So this was the t stat that was in there. Looks like there are tabs on the side to “lock” it open once it opens which probably explains the issue. New t stat seems to be working but still oscillating between ~175 and 195. Better than before but still thinking the radiator is working too well
  3. Slooptin

    Big block running hot. Can’t figure out the issue

    Dang that’s good to know. No pics unfortunately so it looks like I’ll be removing heads after all. Might as well at this point if I’m unsure
  4. Slooptin

    Big block running hot. Can’t figure out the issue

    So this is the head gasket i installed https://www.summitracing.com/parts/fel-8523pt1?srsltid=AfmBOoqKjwZCwCNBFoqy5SGy47TxySTww5rLZt6keGc9_zXksOAgfKAa The truck sits on an incline in my driveway (front up) and I've bled it for like 30 min so far. I'll bleed it again once i install the new rad...
  5. Slooptin

    350 tbi running too cold

    So even if I can watch the temp climb to 210 or a little past on cold start then basically drop down to 170, its a bad t stat?
  6. Slooptin

    350 tbi running too cold

    Since everyone's been helpful with my big block issue, i figured maybe someone knows what's going on with my small block. TBI 350 in my suburban, 195 degree thermostat and a new spectra CU730 radiator (19" tall with a 2-1/8" thick core). The replacement radiator matched what I took out which...
  7. Slooptin

    Big block running hot. Can’t figure out the issue

    Sorry, meant 045 heads. I have another set of 049 cores sitting in my garage waiting to get some love.
  8. Slooptin

    Big block running hot. Can’t figure out the issue

    Yeah, Got that installed and currently have a 180 t stat. I dont think it was boiling over. sensor was in the head prior to me refreshing the motor, but i switched from 049 casting heads to 781 heads. I figured the heads would be hotter, but it sat at right under 210 before this with the sensor...
  9. Slooptin

    Big block running hot. Can’t figure out the issue

    Sensor is in the head. It’s a new sensor too and I verified using my ir heat gun. The external head temp was reading around 235-245 Thanks for the tip. I’ve got probably 5 or 6 t stats sitting around my garage so I’ll try that with one of them. Radiator got delayed so hopefully one night this...
  10. Slooptin

    Big block running hot. Can’t figure out the issue

    Interesting. I thought it said 4 row on the description. Oddly enough I just slapped a similar radiator in my suburban with a 2-1/4” thick core so if this one is thinner, I might just put it in my suburban and put the suburban radiator in the k30 since they both are 19” tall radiators
  11. Slooptin

    Big block running hot. Can’t figure out the issue

    Not sure what was in it originally, it appears to be the original rad. I ordered a replacement off rockauto https://www.rockauto.com/en/parts/fvp,RAD730,radiator,2172
  12. Slooptin

    Big block running hot. Can’t figure out the issue

    Ok well I verified that I have the belt routed correctly around the pump and that my pump is in fact reverse rotation so no issues there. Pressured up the system again after I drained coolant and no obvious leaks other than some loose hose clamps. I managed to poke a nice little hole in the...
  13. Slooptin

    Big block running hot. Can’t figure out the issue

    I’m planning on pulling it and taking the cover off to inspect. Once I get home I can snag some pics
  14. Slooptin

    Big block running hot. Can’t figure out the issue

    Cruise is around 14-15. Idle is 11-12. It gets hot whether I drive it around or not. Not sure on total timing. Vac advance is hooked up to manifold vac Not sure, but it was running right under 210 before I took it apart about 10 months ago
  15. Slooptin

    Big block running hot. Can’t figure out the issue

    Also forgot to mention I checked the head temp with a heat gun and the outside surface is around 245 so I relieve my gauge is accurate
  16. Slooptin

    Big block running hot. Can’t figure out the issue

    I believe so. When I burped the system initially it looked like there was fluid flowing once the t stat opened up. I haven’t paid attention to the lower hose but I’ll check it out. I also don’t suspect the t stat since the new one didn’t change anything. As far as the water pump, it should...
  17. Slooptin

    Big block running hot. Can’t figure out the issue

    Yep, pulled off a gen 6 motor as well Got that too
  18. Slooptin

    Big block running hot. Can’t figure out the issue

    So, I got my truck put back together after doing a mild refresh on my both block and I can’t figure out why it’s running hot. Here are the details: - mark iv 454 - gen 6 pistons and rods with new cast iron rings and trimetal bearings - gen 6 roller cam with new roller lifters, pushrods...
  19. Slooptin

    No lights issue

    So fusible links are good I’m assuming since continuity tests were good. I definitely had it wired wrong. Thanks Ricko1966!
  20. Slooptin

    No lights issue

    Fuses are all good
  21. Slooptin

    No lights issue

    Finished putting my truck back together and it runs great, but I don’t have any lights (interior or exterior). Went through the whole troubleshooting process and found that my wires are good (continuity tests passed), but I’m still not getting power to the headlamp switch. I think I narrowed it...
  22. Slooptin

    Dash Brake light comes on after a couple minutes of driving

    Ok, well I figured I'd provide a final update and wrap this up. I found the light was consistently coming on when the speedo hit 37 mph. I tried resetting the RWAL controller and still nothing. Lo and behold, i was pulling out of my driveway yesterday and noticed my brake lights were on despite...
  23. Slooptin

    Question about converting to a roller cam

    I'm looking at possibly converting my Mark IV motor to a roller cam. I know I'll need to find roller lifters, pushrods, and a distributor gear. I already have a stock gen 6 camshaft that appears to be in good condition and I'd like to use that vs spending $500+ for a bbc roller cam. Looking at...
  24. Slooptin

    Dash Brake light comes on after a couple minutes of driving

    Thats what I think I'm going to try. I also found the below for anyone who's having this issue or wants to learn more about these early abs systems https://www.aa1car.com/library/abs_kelseyhayes_rwal.htm It looks like I need to reset my DRAC to reflect tire size & gearing changes because...
  25. Slooptin

    Dash Brake light comes on after a couple minutes of driving

    Ok, so I did some more digging and found this thread below: https://www.dieselplace.com/threads/replaced-hydroboost-now-brake-warning-light-comes-on.160928/ Same symptoms I'm encountering and it looks like I may have disconnected the RWALS/ABS module the wrong way or done something to set a...

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