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  1. Slooptin

    Exhaust collectors for manifolds

    Going back to manifolds on my sbc as the shorty headers leak constantly and make messing with plugs impossible. Anyone know where to find collectors and flanges that fit the stock manifolds with the donut gaskets? I’m looking to fab up a 2 into 1 exhaust so I have everything else (pipe, y pipe...
  2. Slooptin

    How to "Un-Lift" my suburban

    Hey guys/gals, after a few years with my big ass suburban, I'd like to tone it down as it sees more daily use than trail use most months, plus my wife has started driving it more and while she loves it, she doesn't love being 5' tall and having to hop up into such a tall truck every time. It...
  3. 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...
  4. 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...
  5. 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...
  6. 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...
  7. Slooptin

    Dash Brake light comes on after a couple minutes of driving

    Recently did a hydroboost conversion on my 90 v1500 suburban. Everything works as it should except the brake warning light on the dash comes on after like 3-4 minutes of driving. brakes feel firm and were bled after the install. The possible culprits I can think of: 1. I'm having is the pump...
  8. Slooptin

    Exhaust options for nv4500 swap

    I’m on the process of hooking everything back up on my k30 after swapping from a th400 to an nv4500. With the advanced adapters bellhousing/clutch slave cylinder location, my old summit long tube headers don’t fit anymore. Thinking about switching back to manifolds but wondering what everyone...
  9. Slooptin

    TBI Cam recomendations

    To make a long story short, Went looking for a ticking noise that I thought was an exhaust leak and turned out to be lifters. After attempting to adjust them (turn the nut until the pushrod cant spin and then 1/2 turn) I realized that my lifters are probably on the way out (pushrods kept...
  10. Slooptin

    Wtb/wtt sm465 to np205 circle pattern adapter

    Looking for an sm465 to np205 circle/round pattern adapter. I have an early figure 8 adapter (with 10 spline coupler) I’d be willing to trade as well as an sm465 to np241 adapter. Located in the Denver area
  11. Slooptin

    454 exhaust recommendations

    Looking for input on 454 exhaust. Current set up is summit long tubes with 2-1/4” true duals (the dynomax kit I think) and cherry bomb knock off glass packs. I hate the sound and I’m about to throw on some 781 heads I got for cheap and an Edelbrock performer intake to match the oval ports with a...
  12. Slooptin

    454 vortec heads: which gaskets to use

    Recently acquired a set of vortec heads and an Edelbrock performer rpm intake (oval port) and wondering which head/intake gaskets I need to get for these?
  13. Slooptin

    Tbi alternator wiring

    I think the alternator on my 90 suburban is going out. Took a look at it today and noticed this wire was cut (by previous owner presumably). Any idea why this might be the case?
  14. Slooptin

    Q jet choke question

    Picked up a spare quadrajet this weekend and it’s an older version set up for a divorced choke. My truck originally came with a hot air choke but the port is now blocked off and I was wondering if anyone knew of an adapter or kit to make the divorced choke work with that opening or if there was...
  15. Slooptin

    Adding 81-82 bumper fog lights

    Recently threw on this fog light bumper and I’m wondering how/where to wire up the lights to come on with the marker/driving lights?
  16. Slooptin

    Small block and big block exhaust interchange

    Might be a stupid question, but will a stock exhaust system (post manifold) from a small block truck bolt up to a big block and vice versa? I have long tubes and true duals on my big block and I want to go back to manifolds and a 2-1 and wondering if I can just slap in the stock exhaust from a...
  17. Slooptin

    454 intake manifold gaskets not sealing

    After suspecting that my oil consumption + low vacuum issue was the result of bad intake manifold gaskets, I was able to confirm that that was the case (see pics). Basically I had a leak under the manifold that was simultaneously sucking oil into the intake ports and not letting me get past...
  18. Slooptin

    88-91 antenna base

    Anyone know if anyone still makes the non-labeled part below? my antenna recently snapped off in the base and I havent had luck backing the broken stud out.
  19. Slooptin

    14BFF into suburban: What parking brake cables?

    Throwing a 14bff into my 90 suburban (v1500) and wondering which parking brake cables to buy. One on the axle is currently cut and the other looks like it will be too short based on eyeball measurements
  20. Slooptin

    Power window relay issues

    Trying to hook up the power window relays and I’ve got some questions about wiring. I’m using the following diagram and I’ve got fused power from the under hood junction block going to 30, 85 is ground, 86 is to the switch and 87 is to the motor. If I ground 87a, I can hear the relays click, but...
  21. Slooptin

    1991 gmc suburban stock shock question

    Just picked up a 91 gmc suburban 4x4 and now that I've got it on the road, it definitely needs some shocks. It's still got the quad front shocks but they could very well be the original factory ones. Rockauto has part numbers for inner and outer shocks, but I'd like to go to just one shock...
  22. Slooptin

    Exhaust options for a 1990 suburban 4x4?

    Anyone have any suggestions for exhaust kits for a 1990 4x4 burb? most shops in my area are quoting 1500-2000 to build a custom exhaust and the dynomax kit I ordered from summit was designed by a blind man the way stuff is fitting up.
  23. Slooptin

    Need help figuring out options for regear

    I have a 90 burb (350/700r4) with a 6" ORD lift and 10 bolts front & rear. I run 35" tires most of the time with some 33" studded snow tires for winter. A previous owner (not the guy I bought it from, but the dude before him) installed 5.38 gears in the 10 bolts, which I'm sure are fine for 40's...
  24. Slooptin

    350 tbi idle speed

    So I’ve got this issue with my tbi 350. Normally at idle it’s around 700 at cold start in park and it drops down to about 400 in gear and will sometimes drop and rise and even die. I’ve replaced the iac valve and done the relearn procedure and still nothing. When I unplug the iac it’s fine...
  25. Slooptin

    Question about 1990 Suburban & emissions

    I'm moving to Denver/picking up a new-to-me 90 burb in the next week and I had a question about emissions. I'm buying the truck from a friend there who has it registered in a county that doesn't require emissions testing, but I'll be in the Denver metro area so I'll have to bite the bullet. I...

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