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  1. chappy78

    83 K5 bodywork

    Nice work!
  2. chappy78

    Best lift for all purpose use

    I’m very happy with my 2” Tuff Country lift, ORD shackles, and Bilstein 5125 shocks. Plenty of flex off on fire roads and USFS trails and rides nice on the highway, too.
  3. chappy78

    84 k10 silverado engine decisions

    Edelbrock fuel sump system. Sniper EFI w/ Hyperspark ignition control. Chevrolet Performance dual plane manifold (P/N 1496820) with the Ramjet 350 / HT383 roller camshaft (P/N 14097395) . https://www.gmsquarebody.com/threads/1978-chevrolet-k20-build-and-l31r-vortec-engine-swap.27832/ On a...
  4. chappy78

    84 k10 silverado engine decisions

    I did a L31R Vortec 5.7 swap in my ‘78 K20 and I would do it again. No regrets. Simple swap, durable with 4 bolt main caps, plenty of power, and good value. https://www.jegs.com/i/Chevrolet-Performance/809/12681431/10002/-1
  5. chappy78

    1978 Chevrolet 350 c.i. V8 from K20

    For Sale: Original 1978 Chevrolet Small Block 350 c.i. V8 RPO code LS9 from from 1978 K20 3/4 ton. I pulled this engine from my ‘78 K20 in December 2019. It was running well but I wanted a more powerful, more reliable engine so I swapped in a new L31R Vortec 5.7. The engine is the original...
  6. chappy78

    Rochester Quadrajet $125 - Remanufactured, Purchased from Rock Auto Aug '19

    I have a nearly-new rebuilt Rochester Quadrajet Carburetor that I had briefly installed on my '78 K20 before I converted to Sniper EFI. I purchased it from Rock Auto in August of 2019 and had it on the truck until about October. It has less than 200 miles on the engine. It's a 4MV model...
  7. chappy78

    Adding gauges

    I hear you. Reach out if I can offer any help. What engine are you putting in?
  8. chappy78

    Adding gauges

    Yes, as far as I know it's always been in the PNW. It was originally purchased from Brooks Biddle Chevrolet in Bothell, WA and only had three owners before me. It definitely has some rot but it's not bad. The passenger inner fender is wasted under the battery tray and both front fenders have...
  9. chappy78

    Adding gauges

    Thanks for the compliment! There's lots of pics on my build thread. The color is Hawaiian Blue, RPO code 23. https://www.gmsquarebody.com/threads/1978-chevrolet-k20-build-and-l31r-vortec-engine-swap.27832/ Here's a couple.
  10. chappy78

    Adding gauges

    I'll also add a Vintage air unit in the future which is why I put the switches there and not any gauges. Switches will be easy to move. Those Vintage air units are $pendy! You're probably right about the cost of the gauges. I was patient and was able to buy all the gauges on sale and I think...
  11. chappy78

    Adding gauges

    It’s a vacuum gauge. The oil pressure gauge is in the main dash panel and it’s electric. The vacuum gauge tube has nothing except negative pressure air in it and if it should come undone nothing would happen except a small vacuum leak.
  12. chappy78

    Adding gauges

    Yes, I sourced it from Classic Dash. They also sell complete packages with gauges but I wanted VDO gauges which they don't offer. https://classicdash.com/product/1973-83-chevy-gmc-truck-complete-3-3-8%e2%80%b3-and-2-1-16%e2%80%b3-panel/ I just finished installing a DIN stereo in mine. You...
  13. chappy78

    Antenna adapter for '78 K20 antenna to ISO / DIN?

    Thank you, that's exactly what I need.
  14. chappy78

    Adding gauges

    I couldn't find a good solution, either. I ended up going with under-dash for my vacuum gauge, thermometer, and clock. It's not awful but it's not ideal either. They are unobtrusive and easy to see but I don't like the exposed gauge backs and wiring. I had contemplated an all digital dash...
  15. chappy78

    Antenna adapter for '78 K20 antenna to ISO / DIN?

    Hi Folks, I recently installed a new head unit that has an ISO / DIN style antenna port. Has anyone found an adapter to adapt the original Motorola style antenna cord to a modern head unit? I've checked Metra and Crutchfield with no luck. Thanks!
  16. chappy78

    Hello from Seattle Area - 1978 Chevrolet K20 Intro

    i’ve finished the engine swap and you can see pictures of the project over at my build thread here: https://www.gmsquarebody.com/threads/1978-chevrolet-k20-build-and-l31r-vortec-engine-swap.27832/ I’m happy with how it turned out. Let me know what you think.
  17. chappy78

    Help Needed: Bellhousing Clutch Dust Cover for Vortec 5.7 to SM465?

    Thanks, Dan. That’s the one for a later model truck with the hole for the hydraulic clutch slave cylinder. That won’t work with my mechanical linkage. I may have to just trim the cover I have to make it work until I can find or fabricate something better. You can readily buy the cover for a...
  18. chappy78

    Help Needed: Bellhousing Clutch Dust Cover for Vortec 5.7 to SM465?

    I’m installing a Chevrolet Performance L31R 5.7 Vortec crate engine into my 1978 K20. I kept the original SM465 and bellhousing. When I went to install the starter, I found the stock bellhousing clutch dust cover only fits the two piece rear main seal of the stock engine and is incompatible with...
  19. chappy78

    Time for a crate engine. Suggestions?

    Yes, I have the Sniper EFI controlling the timing with Hyperspark Ignition, Coil, and Distributor. Thanks for the note!
  20. chappy78

    Time for a crate engine. Suggestions?

    I’m hopeful this won’t be an issue for me. I’ll be depending on my truck with my new Vortec L31R with the Chevrolet Performance intake (w/o EGR) and Sniper EFI for cold weather duty. I’ll know when it’s back together and running next week (fingers crossed).
  21. chappy78

    Time for a crate engine. Suggestions?

    Hi Kevin, I'm in the process of installing a Chevrolet Performance L31R Vortec 350 in my K20. You can read about my project here: https://www.gmsquarebody.com/threads/hello-from-seattle-area-1978-chevrolet-k20-intro.27765/#post-531430...
  22. chappy78

    The vendor parts that work, parts that don't.

    Thanks for reporting this. I'm glad to hear these fit well. I have a set waiting in my garage that I'll prime, paint, and install on my '78 K20 as soon as I finish my engine swap.
  23. chappy78

    Break-in oil

    Here are the break in instructions that came with my Chevrolet Performance crate engine: Start-up and Break-in Procedures: 1. After installing the engine, ensure the crankcase has been filled with 5W30 or 10w30 NON-Synthetic motor oil to the recommended oil fill level on...
  24. chappy78

    Hello from Seattle Area - 1978 Chevrolet K20 Intro

    Hi Jeremy, Do you have a little time this week to catch up by phone? I’d like to pick your brain about my Vortec swap and get your advice about a few things. chappy78
  25. chappy78

    Hello from Seattle Area - 1978 Chevrolet K20 Intro

    Wow, gorgeous trucks.

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