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  1. 77 K20

    DISC BRAKE COVERSION

    I did a rear brake conversion on my K20. My rear drums had filled up with mud a few times from water crossings, and since I don't have a good crawl ratio some of the trails I went down I had to ride the brake the whole time. Once drums get hot they won't cool down for a long time. Disc brakes...
  2. 77 K20

    Snow wheeling. Now I want to re-configure...

    Well- I was all excited about 3 weeks ago- met the offroad guys to head up to the top of some mountains to find snow. Got to a small field where we air down the tires and I found out my 4wd was no longer working. While driving down the highway a large clunk/bang was heard and my NP203 shift...
  3. 77 K20

    Optima Batteries worth the cost?

    Amazing how everyone seems to have different experiences. My dad used to be a big diehard battery guy. They failed him twice on different vehicles so then he switched to redtop optimas about 20 years ago and talked me into it at the same time. In 20 years he has only had 2 optima batteries on...
  4. 77 K20

    Selling My Sidekick

    Nonstop- you just made me very very sad... I *just* spent $5,050 to pay off my wife's car early. :( Was that a wise decision? Some would say so, but I'm kicking myself. That is a great truck.
  5. 77 K20

    Smaller steering wheel

    Apparently I don't have pics of my wheel... but I was inspired to buy that wheel based on @WillSquared and his pictures: It is a smaller wheel based on what Animal was talking about above- a 60's Corvette.
  6. 77 K20

    Yukon Posi vs Detroit TruTrack

    Since I'm running a D44 in the front any sort of locker would just be asking for trouble. So that is why I put in a truetrac. It will allow a difference in tire speed as traction is found or lost. Also can always steer. A lot of my offroading is on snow. Lockers make life difficult on off camber...
  7. 77 K20

    Vortec heads vs 350 exhaust.

    I had spent a lot of time researching manifolds vs headers when I made my decision. Found some articles that included dyno runs. For the most part the 2.5" ramhorn manifolds were within 5-6 ft/lbs up to about 4,600 RPM. Then some great gains above that RPM. With my 400 or the 383 I have now...
  8. 77 K20

    Vortec heads vs 350 exhaust.

    I had ramhorn manifolds on my old 400 and when that engine died I put them on a vortec headed 383. I didn't want to mess with headers either- these cast iron manifolds haven't leaked. Although I'd stay away from the 2.5" center dump- had to have the motor mount clamshell modified for clearance...
  9. 77 K20

    Yukon Posi vs Detroit TruTrack

    I have the truetrac in the front of my truck and a friend has it in the rear of his. I'd take it over a posi as there are no "wear parts". Just gears. The gears like conventional oil vs synthetic oil.
  10. 77 K20

    Bilstein ,Kyb monotube ,Belltech ....daily driving opinions

    oops. Duplicate.
  11. 77 K20

    Bilstein ,Kyb monotube ,Belltech ....daily driving opinions

    I had the Bilstein blue/yellow shocks on my old '78 K15. When I bought my '77 K20 it had the original shocks and I put on the ORD front shackles (OEM ones were bent/worn out) and some KYB monoMAX shocks. At the time these shocks were about 1/2 the price of the Bilstein blue/yellows. I thought...
  12. 77 K20

    TrueTrac for rear axle...likes/dislikes?

    After I put a truetrac in the front axle of my truck a friend/co-worker was interested in how I said how I can't tell it is even there. It "feels" like an open differential. So he started reading on them and then installed one on the rear axle of his 2001 Silverado 1500. He tows a snowmobile...
  13. 77 K20

    15" vs 17" wheels

    There are some rough formulas online about if you move up a few tire sizes or switch to a heavier load rating of the tire. I've tried some of them, and it was kinda close. But I've used the chalk method to find the proper street pressure. Set the tire pressure, grab some sidewalk chalk and...
  14. 77 K20

    15" vs 17" wheels

    I moved up to 17" from 16" as there aren't a whole lot of choices in 16 anymore. And zero beadlock wheels in that size unless it custom made. Might check out prices first though. 15" are cheaper for the most part. At least in General and BFG the 15" were around $50/tire cheaper. And at least...
  15. 77 K20

    15" vs 17" wheels

    If you air down the tires for more traction off road then 15" wheels will be a bit nicer. Gives you more sidewall to flex and a bigger footprint.
  16. 77 K20

    NP203... no 4 wheel drive

    I kept thinking about my problem... have a hard time thinking that I broke the front output shaft or the chain. My chain has never made the popping noise that is typical with a loose chain skipping teeth. I've been looking at diagrams of the 203 and wondering if it was possible if the shift...
  17. 77 K20

    NP203... no 4 wheel drive

    I called a local transmission shop that was recommended by a friend. Been around for something like 37 years. Asked about rebuilding the 203... the guy chuckled and said he can't even remember when the last time they rebuilt one of those. Had no idea if he could get parts. Said most are boat...
  18. 77 K20

    Front Posi/Limited Slip Options

    Eaton Truetrac is what I have in the front D44 on my truck. You don't even know it's there compared to an open differential. Perfectly quiet, lets me steer on snow/mud/ice. But transfers power over to the other tire when needed. Its been awesome.
  19. 77 K20

    NP203... no 4 wheel drive

    ORD has a rebuilt 205 for $1,000 but then I'd have to redo both of my new driveshafts and I'd have even less of a low range. If I'm going to re-do the driveshafts then it would be so I can get a nice very low range. Starting to lean towards just fixing or slapping another 203 in there until I...
  20. 77 K20

    NP203... no 4 wheel drive

    I thought about it- but when I priced out all the bits and pieces it came to the same price as a 4 speed Atlas transfer case. And the Atlas is smaller and lighter. (doesn't need a second crossmember added).
  21. 77 K20

    NP203... no 4 wheel drive

    Of course when I have stuff to do, work calls me in all weekend. :mad: But finally got a chance to look at it. I watched underneath as my daughter shifted it around. Both of the levers that go into the transfer case are moving. I've keep the stock linkage lubricated. I jacked up the front end...
  22. 77 K20

    NP203... no 4 wheel drive

    So a few weeks ago I was testing my new tires. Drove up and over a pass. 4wd worked fine. Put it in 2wd and drove down the 10 mile dirt road and then got on the highway. Probably 10 miles down the highway while cruising at 60 mph there was a sudden bang/clunk noise and I saw my transfer case...
  23. 77 K20

    Coolant tank keeps puking coolant

    I have a weird intake manifold for my vortec heads (P/N 7116). It has a special passageway under the carb/TBI to help warm the manifold for cold weather. I'd get a small puddle for coolant inside my manifold after the truck sat overnight. It would then burn off when the truck was started...
  24. 77 K20

    Vortex heads

    I'll throw my 2 cents in here about Vortec heads... They don't like cold weather in winter. These heads got rid of the heat passage under the carb/TBI. Ice cold intake manifold is not good for keeping fuel suspended into the incoming air. Fuel drops out, puddles on the intake manifold floor...
  25. 77 K20

    Coolant tank keeps puking coolant

    Due to a porous casting on my Edelbrock intake manifold (I even bought a second one, same issue). I dropped from a 16 lb radiator cap to something like a 8 lb? 9 lb? and do not have problems with coolant dumping into my expansion tank. It operates the same, just at a lower pressure and my...

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