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  1. Craig 85

    K20 c6p rear axle questions

    One ton's are not direct bolt in. Shock mounts are opposite and spring pads are more in board. See my K30 SRW 14 bolt below. A 3/4 ton 14 bolt FF is a direct bolt in though. If you add a FF rear end, you will need to lengthen your drive shaft. The 9.5" has a longer snout.
  2. Craig 85

    Excited to be here

    Welcome. For reference the old 16.5 x 33's are the same height as my 305/70R16s. 305's are about 1 cm narrower in section width. Mine are on 16x10s with 4.5" of BS. 16's tend to be the least expensive.
  3. Craig 85

    Replace idiot lights with gauges.

    I had an '80 C20 3+3 with idiot lights. I was able to fit some Autometer/Autogauge mechanical gauges into the factory idiot light locations. Sorry I don't have any pictures, this was 1995. From my recollection I just pulled back the circuit to clear the gauges. I trimmed the back of the...
  4. Craig 85

    Help on Dana 44 sub-model

    In a brief search, it appears there is a small and large bearing D44. Here's a link to another company. Maybe they can help a little more. Looks like 76 was the last year for small bearing and 1977 starts large...
  5. Craig 85

    whooshing sound from under the dash when I press on the brakes

    Another possibility is there is a valve under the dash near the brake pedal if you have cruise control. This hose hose hooks up to the cruise control pod (between the TBI and power brake booster here) and runs through the firewall to the cruise cut off switch.
  6. Craig 85

    New member. 87 V20 Stepside

    Missed this thread. Welcome and great looking truck!
  7. Craig 85

    Rescued '84 in South Alabama.

    :welcome:
  8. Craig 85

    1989 V1500 Blazer

    :welcome:
  9. Craig 85

    C20 compared to c10

    It's been mentioned here before, but if I recall the C10/C20 frames are similar, but infact the metal is slightly thinker on the 3/4 ton. I thought the cab mount were the same between the C/K. I've never changed them though. @BSquared the C/K frames are totally different from the firewall...
  10. Craig 85

    Question on leaf springs

    Use a string or tape measure to your stock spring. A 52" spring is equal length from the eye lets to the center pin. 56" springs will be longer to the rear of the center pin by 4". 1/2 ton's come with both 52 & 56" springs. Look at the rear spring hanger and take a picture for us. 52" will...
  11. Craig 85

    Help with bumper

    Would the body side molding for a GMT-400 work until you could find the correct pieces?
  12. Craig 85

    Dana 60 hubcaps.

    Yes the D60 hub caps have a larger inner diameter. For reference with aftermarket wheels the one on the top is a GM 10 bolt. The bottom is a D60. You can see it fills the cap completely and protrudes further.
  13. Craig 85

    Fuel hose

    I had an issue on my K30. I found a similar shaped hose from a Corvette that I had to splice and make work. I cut the hose in the middle of the "S" section (photo #2) and added about an inch of hard line to the middle. It needed to be a hair longer and a slightly different twist. Sorry I...
  14. Craig 85

    TH350 inspection cover.

    There are strut braces that run from those holes to triangular plates that mount to the engine at the motor mounts.
  15. Craig 85

    Emissions Spec Question

    You can always contact a Referee. they will tell you exactly what it needs. It also depends if the truck was a Federal or Calif emissions truck. If it was a Federal truck, and still has the original tag, Calif will let you run those emissions. Referee was a great source for me when I sold my...
  16. Craig 85

    A/C vs Non AC kick panel vent door

    To be honest I don't know. All of my trucks have had factory A/C. Here's picture of an '86 Custom Deluxe. It doesn't have a D/S vent. I also looked at the CUCV's and they don't have them either.
  17. Craig 85

    87 Stock TBI 350 air cleaner lid flip upside down? Does it help? does it hurt? good or bad idea?

    It's funny most guys on my 2500 Suburban/Yukon XL group still run the stock air box and refuse to change to a "CAI" set up.
  18. Craig 85

    85 GMC crew cab

    Years ago I had an '01 GMC 2500HD with the 8.1/Allison and 4.10's. That was a towing machine! Sorry I ever let that one go.
  19. Craig 85

    87 Stock TBI 350 air cleaner lid flip upside down? Does it help? does it hurt? good or bad idea?

    @fast 99, I wasn't comparing TBI to carb, I should have clarified a little more. The truck ran great with both the full open element air cleaner and the factory air cleaner set up. The issue became at idle in the summer with the A/C going. It ran better with a factory air cleaner than the...
  20. Craig 85

    87 Stock TBI 350 air cleaner lid flip upside down? Does it help? does it hurt? good or bad idea?

    On my '79 K15 I ran an open element air cleaner between smog tests for a while. I installed the 5" tall lid vs the standard 3' lid to the factory air cleaner base then ran a snorkel tube (photo 1). It ran way better, especially in the summer. I can't recall if the taller lid will fit under...
  21. Craig 85

    1977 C20 4L80E swap

    I've never priced it out a 4L80 swap, but if you haven't looked at a Gear Venders OD, here's some pricing and info. https://www.gearvendors.com/hrgm3s.html
  22. Craig 85

    Help Identifying lift height

    Here's my last truck. I installed a 4" Tuff Country spring lift in front and a 4" rear block. The measurement from the upper body trim to the axle center lines is 32". Tires were 33x12.50x16.5".
  23. Craig 85

    1984 GMC Sierra Classic C2500 - Missing Spare Tire Holder Parts

    I found mine on line through ebay. Look up the seller rayandsamantha, the link is below. They are from Nor Cal and part out a lot of GM trucks. I had to ask them for this part specifically. they removed it from a truck and made an auction for me. On you truck the rear frame crossmember is...
  24. Craig 85

    1973 Chevy Camper Special from CA - VIN?

    My friend sold the truck back in 1993 when he purchased a new truck. His was a 4 speed, so I'm guessing it was a NP-205 transfer case. I don't recall him having any issues with it as it was his daily driver for years. My K30 has a factory 454 with a TH-400 transmissions and 205 transfer case...
  25. Craig 85

    1987 V20 headlights

    The upper bulb is a low and high beam (3 prongs). The lower position is high beam only (2 prongs).

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