454

  1. T

    Electric Choke Issues

    Apologies if this is a duplicate post; I'm having some issues with my carb and was wondering if anyone could help? I have a Quadrajet 4 barrel, mounted to a stock intake on an 84 C20 454. I recently replaced the hot-air choke with an electric choke, and since then, almost every time I start the...
  2. Frye442

    Intro

    I'm somewhat new to squares. I've owned them and worked on them since I was 15-16 (I'm 31 now) I'm looking at buying a 454 big block for my 86 K20, Sm465 trans. But it has a set of pistons I've never seen before, I attached an image. My gut is telling me they are a type of domed pistons for what...
  3. Hansrasmussen007

    Help with identifying Chassis Number Stamp

    Hey, new here and I have my VIN here: 1GCEK24C3CJ125556 So here's the Number stamped on the chassis I found when I pulled everything off to redo the frame and continue my 6.2l "re-swap" : C6J152559 So the story is the truck was restored in its life time and had a donor truck so idn if the cab...
  4. 86burban

    Sanderson BB8-P headers on a 454 in a crew cab dually

    I have bought $486 worth of headers at Summit Racing for $150. Is anyone using Sanderson BB8-P big block headers on your truck. I'd like to see pictures please. Do you guys have starter or oil filter clearance issues? The truck has a factory engine oil cooler. Tia.
  5. S

    Cruise Control Bracket

    I'm in search of a big block cruise control vacuum actuator bracket. GM part# 468240 I tried to post this in the wanted section but it won't let me. If anybody has one and will let it go let me know......Thanks
  6. 8008

    Newbie doing 454 swap need some guidance

    Hey guys. Got a 1987 454 out of RV that was a previous owners rebuild. Been machined and “rated 500 hsp” / comp thumpr cam/ roller rockers/ original 236 heads peanut ports / edelbrock performer / open chamber/ how legit is this? I’ve read a ton on these with weak heads that are great stump...
  7. ProRedneck

    1976 C30 Trailer Brake Controller

    I would like to add a trailer brake controller and 7-pin connector to my '76 C30 Silverado. Any suggestions on the best way to go about that? Thanks in advance.
  8. S

    Need H6 AC compressor brackets for 454

    Hey y'all...... I have a 85 that I'm currently putting back together from a frame off restore. It has a 454 that I'm wanting to put AC on. I currently have the AC brackets for the ole A6 compressor but was really wanting to go with the H6 setup. If anybody has any leads or info about this...
    • Squarebody1985
    • Thread
    • 454 ac compressor air conditioning bracket h6 compressor
    • Replies: 19
    • Forum: Heat & AC
  9. B

    1973 Chevy Camper Special from CA - VIN?

    Hi there, I just bought a 1973 Chevy K20 Camper Special. However, there’s 2 conflicting items with the VIN that have me scratching my head. I was hoping an old head from CA that really knows Camper Specials or early year square bodies might know: 1) The VIN is CKY243Z148302. The “Y” denotes...
  10. 86Peter454

    Quadrajet fast idle issue.

    hello guys. been a while since i posted on here. i havnt been driving my truck much but i decided to get it out and drive it some and i have an annoying issue with this quadrajet carb on my 454. it has an electric choke on it and at a time it worked fine but some time ago it seemed to stop...
  11. big_Nasty

    BACK AGAIN

    My k30 build coming along! Oh I’m Nasty and I’m from KY and my truck is built not bought.
  12. Kevin James

    1981 C30 Dually

    Hello everyone. Your typical noob here and I just wanted to join this site in order to gain some knowledge about these square bodies. So here’s the skinny on my truck. I own a 1981 Chevrolet Silverado C30 Crew Cab Dually. 7.4L 454 CID 4 w/ NV4500 5 spd. It originally came with a 4 speed, but...
  13. Kevin James

    What am I looking at?

    Hello everyone, I’m new to this site and I’m also a new owner of a 1981 C30 crew cab. When I removed the air filter I noticed this weird “heat shield” that was glued on. Has anybody seen anything like this? What’s the purpose?
  14. 83Burban

    Frankenstein 454 swap. Overheating at idle.

    Some background... Ive got a nearly rust free 1983 4x4 Suburban. Based on the vin, it started its life as a 6.2 diesel. Previous owner swapped out for a 454 w/ th400. (think it's all from the 70s, have not yet been able to find numbers). Ive owned for a couple months now and am still trying...
  15. AyWoSch Motors

    Proper timing for 454 BBC?

    Hello there. I have a 454 big block with a few modifications in my 75 K5 and was wondering what proper timing should be. It's a 74 block out of I believe an old impala wagon. It was rebuilt in the mid 90s, but no major performance parts were added. I bought it last year, and right now it...
  16. Powerhouse Ranch

    454 Oil Pan

    There was a very embarrassing moment and i now need a new oil pan for my 454 Big Block for my 1980 GMC C2500. Best place to get them? Also, LMC doesn't have my year, unless of course it falls under another category. ANY HELP IS APPRECIATED
  17. Rat77

    New,from SoCal

    Good afternoon, new here and new to the car world, I currently own a 1977 Cheyenne side step,with a 350 motor.current looking into a 454 big block. My question is is Gen 4 the same as a MK IV? anyone can shed some light would be appreciated thank you in advance
  18. Connor koehler

    My first square body Chevy!

    I just picked this bad boy up and I’ve already started to tinkering with it. It’s a 1980 k20 4x4 with a 454. I made a HD bumper soon to have a winch in it, and yesterday put some 2” lift springs on the front. I’m thinking of making this the family bug out wagon, I’ve got another battery and...
  19. Connor koehler

    New square body owner!

    I just picked this bad boy up and I’ve already started to tinkering with it. It’s a 1980 k20 4x4 with a 454. I made a HD bumper soon to have a winch in it, and yesterday put some 2” lift springs on the front. I’m thinking of making this the family bug out wagon, I’ve got another battery and...
  20. J

    1989 v3500 regular cab

    How’s it going. Looking to for opinions from people that know this era of truck more than I do. I’ll start with explaining it. It’s a 1989 Sierra sle( power windows & locks). Tbi 454. 1ton rears(ifs). Regular cab. With a Muncie 4 speed (3 & granny low). Now, I’ve been searching since I bought it...
  21. Z

    New to Square body.. electrical nightmare...

    New to the forum, new to chevy square body's and not the most experienced mechanic. I bought a 1983 C30 to build a classic welding rig out of, its got some problems so I'm sure I'll be here a lot. Starting off, its definitely got some wiring issues, headlights are not working, only the running...
  22. Gilderbeast

    Lunati Cams

    Hello. I was hoping I could get an answer. Im trying to pick a hydraulic roller cam out for my 1980 Chevy K30 ,454, nv4500, and 4:10 gears. I plan on stroking the motor to 496, compression ratio around 9.8:1, and putting edelbrock pro flo 4 efi on it. It has longtube headers as well. I don't...
  23. T

    Engine history question

    Was there an 511 cubic inch engine (upgraded 454) Special order from a dealer or a police package for the squarebody?
  24. Dleighton

    454 with 10 bolt rear end?

    Hi, I was wondering if anyone had any insight on how well a 10 bolt rear end would last after a 454 motor swap. I just had it rebuilt last year, 4.56 gears, 35 inch tires. I know it's not an ideal set up, but I am having trouble finding a good deal on a different set up. The motor is a stock...
  25. Kyle R

    Water pump to fan bolts stuck...

    I am replacing the water pump on my 87 454, there are four double-ended bolts that thread into the pump on one end and hold the fan on with the other.. I figured the new pump would come with them, but nope. Anyway, I'm having a tough time getting them off the old pump as they are threaded on...

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