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  1. SkinnyG

    Th350 from heck

    Everything will show up leaking onto the pan gasket seam. Also check: Shifter shaft seal Front pump o-ring and front seal (change the front pump bushing and gasket while you're at it, use a skim of Permatix Black on both sides of the pump bolt washers). Governor cover o-ring Intermediate...
  2. SkinnyG

    To PCV or not to PCV

    PCV also helps the oil last longer by sucking all the impurities out of the crank case. Those impurities are mainly what gets past the rings - exhaust. How long do you think good clean motor oil is going to last if you're blowing exhaust onto it all day? Ever see a buggered tail pipe allow the...
  3. SkinnyG

    Bore vs. Stroke, a little math

    I did a wack of Googling to compare a 377 (400/350crank) and a 383 (350/400crank). The consensus - especially among the circle track crowd - is that the 383 just has a whole lot more usable torque, despite more valve shrouding. And if you had a 400 block, just build a 408. The 377's beat all...
  4. SkinnyG

    Bore vs. Stroke, a little math

    A larger bore will also allow bigger valves, which allow better cylinder filling. A longer connecting rod will have less angularity on the crankshaft throw, allowing a longer application of torque during the rotation.
  5. SkinnyG

    Installing valve springs.....question????

    There will always be some leakage if you are pressurizing the cylinder. No engine is 100% air tight. A really good engine might leak 5%. Most engines will leak a lot more. But there will be some leak. I like the nylon rope through the spark plug hole a lot better than merely air.
  6. SkinnyG

    Door hinge pin

    When I did mine, I used the smooth brass bushings because they slipped right into the holes. I think the thicker, (corrugated?) bushing might be for when the hole is REALLY worn out, and you drill it oversize to fit. But I might be wrong - I never found the answer on that one either.
  7. SkinnyG

    Fixed

    Voltage regulator cacked, taking out the fusible link?
  8. SkinnyG

    Rear flip issues

    Droop is when you jack the truck up, and the suspension hangs down. The amount it hangs down (droops) is called "droop." You ideally want enough droop that no matter how hard you drive, all four wheels are still on the ground. Sometimes that's hard to achieve. When I design a suspension for...
  9. SkinnyG

    Rear flip issues

    You're right - my bad. The axle has to move back, because the leafs are angled. You done good. I'm thinking the wrong shocks. Did you peel off a sticker and find a Monroe name a part number?
  10. SkinnyG

    Rear flip issues

    When you did the flip, were the holes mounted such that it moves the axle forward? Those shocks look SUSPICIOUSLY like Monroe shocks. Would you be willing to peel a sticker off and see what part number they are? With shock extenders, you should be able to use stock rear shocks (Monroe 33084)...
  11. SkinnyG

    6/7 drop tire size?

    Can you post pics? I don't see any pics.
  12. SkinnyG

    Polyurethane bushings on a 4wd daily driver

    "They say" to never use a poly trans mount - always use rubber. I had poly for a couple years, all the while chasing driveline vibration. Eventually chucked it and went rubber and s-m-o-o-t-h since. I've had poly suspension bushings in my last three vehicles (none 4WD), and they do ride...
  13. SkinnyG

    Should I cut more coil?

    Technically, a shorter spring with the same number of coils will be a softer spring. If the front doesn't settle much over time, just cut 2" off the end of each coil spring at a time to sneak up on the ride height you want. If you have factory half-ton coil springs in it, consider installing...
  14. SkinnyG

    Carb or tbi

    I would keep the TBI, hands down, no question, from a driveability standpoint alone. If the engine deviates from stock and the TBI ECM cannot deal with it, you can go MegaSquirt for less than the cost of swapping everything over to a carb and then have all the benefits of a completely tuneable...
  15. SkinnyG

    3.08 to 4.10 gear swap

    You might find someone selling an open carrier who has swapped in a limited slip. I went from 3.07:1 and open to 3.73 and limited slip, and I tell you - I wouldn't go back. I am SUPER happy with the limited slip.
  16. SkinnyG

    Welded, broken, re-welded PS pump bracket

    Can you post a picture of the offending area of the bracket, and the quality of the welding?
  17. SkinnyG

    Exhaust system?

    Engine Masters (YouTube Motor Trend Channel) did a test on 2.5" vs. 3" exhaust
  18. SkinnyG

    Exhaust system?

    Single 3" or dual 2.25 - 2.5"
  19. SkinnyG

    clutch problems WTF????

    It ~shouldn't~ go in backwards, but that doesn't mean people don't do it. When the clutch disc is in backwards, the clutch itself is clamped by the pressure plate itself against the flywheel bolts, and the thing never releases. I wager a case of Canadian Beer that it's in backwards.
  20. SkinnyG

    Gear Ratio! Is this normal?

    +1 I was just going to post that.
  21. SkinnyG

    Longer wheel studs for 1/4" spacers

    ARP? They would sell studs by ~size~, not necessarily by application, methinks.
  22. SkinnyG

    Add One-way valve to keep fuel at the carb? '86 Burb 454

    Follow-up to the dubious fuel pump issue - I took my "failed" near-new fuel pump to school to show my students (I teach highschool mechanics). The plunger inside isn't going down - the lever to operate it moves, yes. But the plunger which should be pulled down by spring pressure is not moving...
  23. SkinnyG

    Symptoms of a bad/failing ECU?

    If the ECU is getting all the correct signals all the way to its input, but the output is drunk.
  24. SkinnyG

    Add One-way valve to keep fuel at the carb? '86 Burb 454

    I figured my steel lines were clogged, so when I went electric I also went through the lines I was going to use for EFI. When I took all the EFI out (another story), I blew compressed air through the old lines, but they seemed pretty clear, so I am now running the electric pump through the old...
  25. SkinnyG

    Add One-way valve to keep fuel at the carb? '86 Burb 454

    I chased a fuel starvation problem for the longest time. New Carter mechanical fuel pump when I put the motor in 3 years ago. Also two new tanks, two new pickups, and all rubber lines replaced. Within the first two years, it would run out of fuel during a full throttle run, usually half-way...

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