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  1. 75Monza

    TrueTrac for rear axle...likes/dislikes?

    As stated, looking for everyone's likes/dislikes of the Truetrac set up in a rear axle. This is not for a square body, just big heavy truck, my 05 Dodge 3500 4x4 diesel crew cab. It's factory open diff, so literally sucks in snow. Looking at installing a Truetrac instead of a locker since I tow...
  2. 75Monza

    Monza's many other projects

    Figured I have so much stuff in the fire, just as well do a thread for them too, lol. So, going to start this one out with my most recent tow home from yesterday. I had thought I knew everything about this truck since it hadn't changed since I first remember it when I was 5, but after much...
  3. 75Monza

    Cost of spring rebuild

    Just out of curiosity, I called a local shop in Spokane and asked for an estimate to get my springs for my project K30 refurbished. They are 56" 1 ton 9 leaf with factory overload with no broken leafs and just a tiny bit of wear on the ends of the overload leafs from hitting the stops. Since had...
  4. 75Monza

    1980 K30 3" lift block question

    Hi guys, I'm looking for good quality 3" iron tapered lift blocks for my '80 K30, preferably in a kit with the U-bolts. Anyone know of a kit part number and where to buy? Been searching around, can't seem to find what I'm after...will block for K20 work or is it different pin? Getting ready to...
  5. 75Monza

    C30 vs K30 cab difference

    Anyone know if I can take an '80 C30 4 speed cab and swap it to an '80 K30? I have a column for auto, just not sure how much difference in the trans tunnel. Looking at pictures, the C30 does have the removable tunnel like a K30. Found a rust free cab (:jawdrop:), trying to figure out if I can...
  6. 75Monza

    Tach conversion kits

    Was just looking through the new LMC catalog and found they now offer a tach conversion kit...about damn time someone did this. Going to order one for my plow truck and see how it goes. https://www.lmctruck.com/1973-87-chevy-gmc/gauges/cc-1973-87-tachometer-conversion-kits
  7. 75Monza

    '80 K30 cruise control

    Got a question on my 1980 Chevy K30. Under the hood, it has all the cruise control items that were still hooked up, but inside is a mystery. It has a tilt steering column that I tore down the other day to rebuild and install new key switch (auto column). Didn't even think about it, but the turn...
  8. 75Monza

    Cluster interchange issues

    Looking at installing a stock cluster that has a tach in it (was for gas, not diesel) with 100mph speedo and small fuel gauge where the clock would go. This would be into my '80 K30, auto with factory gauges (no tach), just the above basic Scottsdale trim. 1. Will an '81-'87 cluster bolt in the...
  9. 75Monza

    What is best gas tank coating?

    Just ordered new tanks for my '80 K30, was wondering what the best coating to put on the tanks would be before I install them?
  10. 75Monza

    Spring difference between 1 ton dual and 1 ton SRW

    I was just offered a set of 1 ton dual K30 springs from a '78 and I was curious what differences there are between the front and rear on my '80 K30 SRW. The back obviously has the extra overload pack in with either 2 or 3 extra leafs compared to mine, but from pictures, can't really tell any...
  11. 75Monza

    1980 Chevy K30 Scottsdale value in POS condition

    I've been trying to figure out what the ultimate plow truck would be for me, so started looking for parts. I found a 1980 K30 Scottsdale single tire that I'm going to go look at, just curious what people think the average price on this might be. Only info I have at the moment is body is beat...
  12. 75Monza

    SBC 427 or 434 questions

    Had some motor questions not related to square body, and since this is for a small car, not sure if anyone has built one of these here. So I started seriously thinking of what motor to build for my 75 Monza Towne Coupe and immediately ran into a question. I was thinking of doing a 406 0.030...
  13. 75Monza

    Radiator oil cooler help

    So I have this '90 K2500 with a 350 auto that I ran into an issue with the radiator with. The stock radiator has a transmission cooler and an engine oil cooler, one in each tank. The engine oil cooler lines are aluminum with an O-ring and threaded fitting. The new radiator came with a brass...
  14. 75Monza

    Car rotisserie

    I'm looking to get a rotisserie for doing one of my Monza's. Found one that Eastwood has that is a 3000 lb rated, anyone have something like this that might know the pro's and con's of rotisseries? My Monza is a unibody and without the motor/trans weighs around 2000 lbs. Going to paint it...
  15. 75Monza

    Failed experiment, back to another diesel

    Well, a few years ago, I got rid of my 99 Dodge 2500 cummins 4x4, hatted the ride and the front suspension fell apart every two years. Went back to gas and picked up two square bodies with the goal of making my 86 be my universal do everything truck. Two years now, and just not working for me...
  16. 75Monza

    SBC rocker adjustment problem

    Okay, ran across something that I'd never seen before or maybe just never noticed on my plow truck 350. Basics...this is a 350 4 bolt GM Goodwrench motor that was in my 82 plow truck about 10k on motor, PO did some cooling system no-no's and ended up with blown head gasket and warped head. I...
  17. 75Monza

    What's the best gen 454 block to build?

    Now that my big block thirst has hit me again, thought I would get some input since Iv'e never built a rat before. Looking to land in the mid 500 hp range with this, basically what is the best 4 bolt short block with good aftermarket stuff available. Would probably go with a good set of iron...
  18. 75Monza

    Th400 freewheeling in second

    Okay, since I noticed a th400 issue topic, thought I would bring mine up, this is on my 86 K20, 383, th400, 4.10's, 37's. About a month or two ago, I noticed that when I'm going down a hill going to work, I put it in second gear to keep the speed down since it's a 25mph zone that I typically...
  19. 75Monza

    What new tools have you got lately?

    Being a Truck/Car guy and being a tool guy has always been to me like cake and frosting, they just naturally fit together. Since I'm always after tools that I don't have, I thought it would be sort of cool to do a thread on tools. Post up pictures of new or new to you tools that you just locked...
  20. 75Monza

    Monza's Mini-Square Blazer project

    So about a year ago, I picked up a 1991 S10 Blazer 2 door RWD for $500. I've always had an itch to v8 conversion one of these since my early 20's when they came out with the Typhoon, thought it was just bad ass look and pretty quick for a v-6. Not sure which direction I'm going with this...
  21. 75Monza

    Not getting full turn to stops with 10 bolt front

    Just got done rebuilding everything in the front of my 86 K20, didn't really pay attention before, but noticed that now I am not able to turn full right or full left to the axle stop bolt. Started with wheels straight since didn't mess with the tie rods, centered the new steering box, then...
  22. 75Monza

    86 and 87 grill difference

    Found a guy with a brand new 87 grill for $40. Are there any differences between 86 and 87 dual over/under?
  23. 75Monza

    Want to change from 37x12.50x16.5 up to 17" or 18" rims...which one to use?

    I am running Goodyear 37x12.50x16.5 on my truck right now, I want to get away from the noisy, vibrating rough ride of the bias ply's. Since any good 37" 10 ply tire doesn't come in 16.5 that I can find, need to move up to 17" or 18", don't really like the look of any larger rim than that, don't...
  24. 75Monza

    What's a good carb to run on my 383?

    Another problem I am going to correct is the carb on my 86 K20. Currently running an edelbrock 750 vac secondary on it that has off idle hesitation, every one I've ever had seemed to have a crap idle circuit. Another issue seems they don't like ethanol, have to clean/rebuild almost yearly...
  25. 75Monza

    Posi kit for 10 bolt

    Lost the ball joints in my 10 bolt, it's in my 86 k20 that I am running 37's on. Want to upgrade to a Dana 60 king pin, but having no luck finding one in my area, so rebuilding my 10 bolt to get me by for now, then once I find a Dana 60 will swap the 10 bolt to my 82 K20 plow truck. I was...

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