|
Re: 1978 Chevy K20 longbed with nearly 500,000 miles! LS Swap begins!
Thanks! It’s been a real busy summer, and finally found some time to get back to it!
Finished up the last bit of wiring and cable routing, securing the O2 sensor lead, clutch bleed line, and speedo cable. https://i.postimg.cc/g0MPMLrK/A07-A4...36-CF54-AE.jpg Sourced a cleaner and straighter bumper for the rear! https://i.postimg.cc/B6XfRZKf/0-F266...1-F35-DB30.jpg Drivelines are being brought into town for either a rebuild or replacement. https://i.postimg.cc/C1Xp0yGB/5-DDBA...D425-BF1-C.jpg The biggest part, updated the tune to include PWM fan control logic! Anyone care to critique my setup? I watched projectgatago’s video, and set it up the best way I could think, seeing as I don’t have a speed sensor on this truck. My thought process is that the fan should be off at 195F (thermostat temp) and running progressively faster at speeds above 200F, and ramping up significantly above 220F. I did RPM based instead of speed, one, because I don’t have a speed sensor, two, because the fan should remain off while moving anyway due to airflow over the radiator, and three, it acts as a safeguard to kick the fan on regardless of speed or engine running if the temp is that excessive. I haven’t tested this out with the engine running yet, as I wanted some feedback in case I screwed up. https://i.postimg.cc/G3T1Q2Rk/B724-D...50-AE080-F.jpg I used Holley’s default Electric Fan #1 pin but repurposed it to PWM- https://i.postimg.cc/SN0bthQH/6882-C...8-AA7-F946.jpg This box pops up when I click ‘Where Used’. Does the port have to be actively functioning (fan on), or did I screw up? https://i.postimg.cc/9FG56nr0/81-C5-...248-D51392.jpg I set this to 190F just to ensure no need for the fan below that temp. https://i.postimg.cc/13BxtV0Z/C84-F5...-AC7-F9-CF.jpg |
Re: 1978 Chevy K20 longbed with nearly 500,000 miles! LS Swap begins!
That's interesting to see. Sorry, I'm no help with it. The bumper looks good!
|
Re: 1978 Chevy K20 longbed with nearly 500,000 miles! LS Swap begins!
Dont forget to tie up the knock sensor wiring. I failed to secure mine and it rubbed through on some metal (Im guessing the fuel rails) and was shorting out popping the 40amp fuse for the ecu.
|
Re: 1978 Chevy K20 longbed with nearly 500,000 miles! LS Swap begins!
Got into the suspension a bit since it’s been raining the last few weekends. New front springs, went to 8600lb GVWR since the rear was already done long ago.
https://i.postimg.cc/Hs0S3jh6/7-EEEA...1-A5-DC3-D.jpg Out with the old! https://i.postimg.cc/bwzm5pXp/3-A840...CC2-C45330.jpg In with the new! https://i.postimg.cc/fRB8npZX/AB3-C0...-E91-E1-B2.jpg Passenger side https://i.postimg.cc/W4zX28by/7-E082...CD58-C1174.jpg https://i.postimg.cc/g074rhx2/7-C2-C...B8-EEC2815.jpg All installed! https://i.postimg.cc/qRCwK7KX/4-C69-...6-F103-EC7.jpg https://i.postimg.cc/HnD29C4G/0-DF78...1932-CF971.jpg |
Re: 1978 Chevy K20 longbed with nearly 500,000 miles! LS Swap begins!
Keep it up. This is one of my favorite builds to follow.
|
Re: 1978 Chevy K20 longbed with nearly 500,000 miles! LS Swap begins!
Finally! Both driveshafts are finished. The rear was rebuilt, the front is nearly all new. It might actually drive!
https://i.postimg.cc/FH7dMtSn/35006-...AAE2-DD924.jpg The front axle needs to be rebuilt before any serious movement happens. It’ll be getting new ball joints, new brakes, new axle seals, and new wheel bearings. I scored this OTC axle socket kit for $50 on FB! https://i.postimg.cc/ht6zgCb4/3-EB0-...E907-BBE83.jpg https://i.postimg.cc/0NS6NpcY/AC6-D4...C8280-CD65.jpg |
Re: 1978 Chevy K20 longbed with nearly 500,000 miles! LS Swap begins!
Glad to see some more progress!
|
Re: 1978 Chevy K20 longbed with nearly 500,000 miles! LS Swap begins!
|
Re: 1978 Chevy K20 longbed with nearly 500,000 miles! LS Swap begins!
Getting even closer here!
New front bumper brackets showed up from LMC. Very good fit and quality! https://i.postimg.cc/qq4Yf0PF/A2-F4-...CEC3-D84-C.jpg Picked up some stainless carriage bolts and hardware and mounted the bumper. https://i.postimg.cc/KvLNPCCk/871-C2...3792093-F8.jpg The hood is looking pretty ratty with the rusted out front section, but we’re going to make it look slightly better in the meantime before I replace it. https://i.postimg.cc/s2tx4Hkx/29-BE8...5-F2-EE2-A.jpg Desecrating some old valve covers. https://i.postimg.cc/fbXDDzPW/7-F7-A...-D0-AB9-C1.jpg One side in! https://i.postimg.cc/L4Q7Qdyx/D3-C5-...87-B164-C7.jpg Also ordered a front axle seal install tool. For $31, it wasn’t worth screwing around without it. https://i.postimg.cc/7hKKpzMC/6-AC80...-F32-E71-C.jpg |
Re: 1978 Chevy K20 longbed with nearly 500,000 miles! LS Swap begins!
I totally forgot about these heat shields. Cleaned them up and bought some stainless hardware to install them!
https://i.postimg.cc/X76Rsyc7/A0-FE1...6-C9-FA407.jpg https://i.postimg.cc/7Y1pdYm1/450404...-D0-DCEA73.jpg https://i.postimg.cc/t4XLjQMK/97-EAD...7-EC2-A506.jpg Getting very close to being done under the hood! https://i.postimg.cc/vZ3C82Rc/C7-A66...6-DF57-AFE.jpg I picked up a different rear bumper in chrome instead of painted. Also installed stainless hardware on the mounts. Ordered new license plate lights as this takes a different style. https://i.postimg.cc/8Cc97dDw/9-E7-F...A848793-FA.jpg The shop is currently a disaster, but the truck is coming together! https://i.postimg.cc/25tJhqSY/EEA185...-F7543-D96.jpg |
Re: 1978 Chevy K20 longbed with nearly 500,000 miles! LS Swap begins!
Engine compartment looks very "stockish"...I like it!
|
Re: 1978 Chevy K20 longbed with nearly 500,000 miles! LS Swap begins!
Thanks!
Back to smaller updates! I bought some replacement license plate lights for the new rear bumper. Old ones removed https://i.postimg.cc/Vv7FPKW1/3332-D...366-BB2657.jpg New ones installed! https://i.postimg.cc/CMJ78KTt/6-BD9-...E7-BFD8-F3.jpg |
Re: 1978 Chevy K20 longbed with nearly 500,000 miles! LS Swap begins!
I picked up a new wiper motor because the old one quit working.
https://i.postimg.cc/ncKWXtvK/868-F5...80-BC795-E.jpg Turns out the new motor didn’t solve the issue, nor did a new switch. After a day of troubleshooting, it turns out the blue wires were swapped in the new harness! https://i.postimg.cc/ncnkw9D7/9-C789...D9-BD20320.jpg New wiper motor in and all wires where they are supposed to be! https://i.postimg.cc/ncTk8V4W/D72-B5...478664-FE1.jpg Installed all new wiper washer lines and filled the tank! https://i.postimg.cc/NjMxQhbj/7-E8-F...25-C7040-A.jpg Next up, finally rebuilding the front axle! https://i.postimg.cc/sgVNS0ck/27-B83...2-A93-D3-F.jpg Hub and rotor removed https://i.postimg.cc/t42mztvY/607906...-E24-B4-CC.jpg Rotor and bearings are well worn due to improper hub nut adjustments. https://i.postimg.cc/fbyqqt15/CF6-B3...4-D97-D448.jpg The calipers are showing their age also https://i.postimg.cc/XvPHRNbW/3466-E...1-A22-D026.jpg Drivers side! https://i.postimg.cc/W3JWTRNk/6-CA63...EB7-B8-C75.jpg Even the spindles are damaged beyond repair from the loose bearings https://i.postimg.cc/cCyDJDC5/84-ABB...6882-C8-DB.jpg U-joints are completely shot https://i.postimg.cc/prfs5DnV/0826-D...D533-E8951.jpg Everything all apart! https://i.postimg.cc/bwNmdSY8/BB7337...6305474089.jpg Time for some new parts! Rotors and bearings https://i.postimg.cc/8kMKYVn8/CD1-D1...D1564-D7-B.jpg New calipers and pads https://i.postimg.cc/15SChYL8/2-C909...A4-F9-FCD6.jpg https://i.postimg.cc/ZKLfTxSV/42-B2-...D0-DA41-E3.jpg Removed the carrier and old axle seals, cleaned the housing. https://i.postimg.cc/R02dPP7V/2189-A...458-BEC7-B.jpg New axle seals! https://i.postimg.cc/W3rnxM8m/A62-FB...D42-B10214.jpg https://i.postimg.cc/SRhr4J1B/D393-E...14-BFBCB19.jpg Pressing the new seals in! This tool was worth every penny https://i.postimg.cc/kGvygqkB/0-E10-...5329-EBCE4.jpg Carrier reinstalled https://i.postimg.cc/66rc0fyt/A09360...5848541-E6.jpg New spindles https://i.postimg.cc/ht51jC3b/139090...754945-E50.jpg New hub nut kit https://i.postimg.cc/hGQb79kF/8017-B...003-C08214.jpg New U-joints installed in the axle shafts https://i.postimg.cc/pTNQQmvm/40-C83...C468-B8773.jpg New ball joints installed in the knuckle https://i.postimg.cc/Y916dt2b/FF2-B4...9-A5-B6-D2.jpg New rotor and caliper installed https://i.postimg.cc/VvmjT2d1/FF9-DA...399721-C40.jpg https://i.postimg.cc/8c4hVw6v/C6-BF1...C9014460-C.jpg Hub installed https://i.postimg.cc/KcD7LcHY/5-AF21...-BAF51-FD1.jpg Ball joints installed in passenger side knuckle https://i.postimg.cc/hP4L0Fk1/1-CEA9...EC6-E8-EBD.jpg Knuckle installed to axle housing https://i.postimg.cc/yYfFQQB4/06-E2-...B777-C65-F.jpg Axle shaft and new spindle installed https://i.postimg.cc/RZNwj7V3/EB4-DB...78-B5-D3-E.jpg Backing plate, rotor, and caliper installed. https://i.postimg.cc/52T81X6s/6332-A...8-F4-D2-E9.jpg Also installed the new trailer brake controller under the dash. https://i.postimg.cc/5tzLtfzb/BA93-D...AD8-F95808.jpg https://i.postimg.cc/C1VDB9CD/AC5-BB...-DCB3791-F.jpg |
Re: 1978 Chevy K20 longbed with nearly 500,000 miles! LS Swap begins!
Any concerns about the TermX being in the engine bay and it not being sealed?
|
Re: 1978 Chevy K20 longbed with nearly 500,000 miles! LS Swap begins!
Nice progress buddy! Lots of work!
|
Re: 1978 Chevy K20 longbed with nearly 500,000 miles! LS Swap begins!
No concerns about the ECU in the engine bay. Holley states that it’s okay to mount it there, and it's not something thats going to see a lot of moisture anyway.
|
Re: 1978 Chevy K20 longbed with nearly 500,000 miles! LS Swap begins!
More new parts! I decided to ditch the original hubs because they were missing some small parts. Upgraded to the premium Warn set!
https://i.postimg.cc/j5n0XtPS/FFBF00...F77-E22043.jpg https://i.postimg.cc/4ypDDP8C/6-D0-B...B0-C7-CF15.jpg https://i.postimg.cc/QN5ZKNj6/17430-...33-FF3-BA9.jpg https://i.postimg.cc/dVsbf8rX/C4486-...1-D1211722.jpg Also bought a new drag link set https://i.postimg.cc/Gp9ZLdMx/F7-F2-...37-E3887-B.jpg And tie rod https://i.postimg.cc/rpb7z33X/25-AA5...-F4-E522-B.jpg The tires I ordered also showed up! BFGoodrich All Terrain in 305/70R16, or the closest metric equivalent to the current 33x12.50’s. https://i.postimg.cc/1tq2FM1g/9-AF6-...8-B65-C3-B.jpg https://i.postimg.cc/J0Cg5JRp/330-BF...-E08707-DF.jpg |
Re: 1978 Chevy K20 longbed with nearly 500,000 miles! LS Swap begins!
A few more parts showed up also!
I ordered a Borgeson Street/Performance steering box with a modern 12.7:1 ratio, and 3 turns lock to lock. This should feel MUCH better than the old floaty box! https://i.postimg.cc/3w8fgJ1m/2-F23-...6140-E90-D.jpg Also ordered a new matching rag joint. https://i.postimg.cc/5ts7pdKG/B3-A09...C31-D2-D77.jpg Bought a pair of Rancho shocks for the front! https://i.postimg.cc/263HKcP5/E7-B5-...7572626627.jpg And a new dome light lens. https://i.postimg.cc/d1XWPRYj/CCCC6-...1-DD6-E2-A.jpg Started off this weekend by installing the dome light and new lens. https://i.postimg.cc/T1D5FfkP/8-A035...D88-D36-F4.jpg https://i.postimg.cc/6Tx4NgSf/0-E0-F...-AC662-D27.jpg Removed the old steering box since it had play down at the pitman arm. I also deleted the cooler since it was leaking. https://i.postimg.cc/VsdTGv8F/396651...-D452-D092.jpg New box has metric O-ring fittings so the CPP adapters are no longer needed! https://i.postimg.cc/WpCyQVpc/9-E686...14226-C2-A.jpg New rag joint installed on the new box! https://i.postimg.cc/c43zWz6g/7-B7-C...A97-B82939.jpg Painted the old pitman arm and installed it along with the new box! https://i.postimg.cc/kgdpgytj/C1-DED...-AA613-C52.jpg New drag link installed! https://i.postimg.cc/Sx7t2z6m/50252-...-D31-E0069.jpg |
Re: 1978 Chevy K20 longbed with nearly 500,000 miles! LS Swap begins!
I need that steering box.
|
Re: 1978 Chevy K20 longbed with nearly 500,000 miles! LS Swap begins!
Glad to see you still plugging away! I just put a new Borgeson box on my Z28. Very good product!
|
Re: 1978 Chevy K20 longbed with nearly 500,000 miles! LS Swap begins!
I’m glad to hear that, I’m hoping it will be a worthwhile upgrade even on a 3/4 ton truck!
I got the tires mounted on the rims and balanced last night! New wheels are going to really make it stand out! I’m still disappointed that I can’t find 16.5’s anymore, but I’ll save the old wheels to maybe go back on in the future. https://i.postimg.cc/bwcTFsYK/45-EC1...583-CB59-D.jpg https://i.postimg.cc/W1GnRTht/19-B9-...-A5512-EC4.jpg |
Re: 1978 Chevy K20 longbed with nearly 500,000 miles! LS Swap begins!
More parts!
New sway bar bushings! https://i.postimg.cc/DfdQh0K4/569973...1-EB3-B057.jpg New steering stabilizer! https://i.postimg.cc/65Md7Pq9/D23821...-AA047-AB9.jpg New RH rear bed corner since it was rusty to the point of nearly falling off. https://i.postimg.cc/dVDGG9ZG/BC196-...339-CFDD43.jpg Finished deleting the power steering cooler and connected the lines to the new steering box. https://i.postimg.cc/QdP1mWcw/F5-E02...-BED8-A4-E.jpg Tie rod installed! https://i.postimg.cc/q73n5MLR/5-EF5-...-F2-E0-A20.jpg Steering stabilizer installed! https://i.postimg.cc/B6fD99YC/CCF915...DD71-D0-C4.jpg Sway bar bushings installed! https://i.postimg.cc/Qtg7j4vZ/72795-...7692286187.jpg https://i.postimg.cc/L5H15kMY/B29911...2-FE3-A653.jpg Front shocks installed! https://i.postimg.cc/hPtmq0rN/F7-C8-...0002-D50-C.jpg https://i.postimg.cc/7Yt2PTth/77-DCA...250-D7-BB0.jpg Front steering and suspension completed! https://i.postimg.cc/QdBWFxvb/BFED6-...-E0-A9-ACD.jpg https://i.postimg.cc/dVzZrcYK/EA673-...133-AB0-EC.jpg |
Re: 1978 Chevy K20 longbed with nearly 500,000 miles! LS Swap begins!
Getting close to the last of the needed parts! Pretty much down to rear brakes and shocks at this point!
https://i.postimg.cc/265RL3G6/E4-F9-...-D9-E2-FD1.jpg New rear drums! https://i.postimg.cc/DZYVrFpc/E57572...2-A7130-AD.jpg New rear shoes! https://i.postimg.cc/d37bnXzc/916666...CED3359054.jpg New rear hose and hardware kits! https://i.postimg.cc/Fz226p4d/50514-...1-BC76-F66.jpg New wheel bearings and wheel cylinders! https://i.postimg.cc/SQ3FjSMS/C71-EE...F09-A55494.jpg New axle gaskets! https://i.postimg.cc/KvTXM6Pn/795674...15097884-B.jpg Drums painted! https://i.postimg.cc/7ZrFMK9j/94-EB5...DA31-AB356.jpg |
Re: 1978 Chevy K20 longbed with nearly 500,000 miles! LS Swap begins!
Looks good! Always nice to go back with new parts.
|
| All times are GMT -4. The time now is 01:19 PM. |
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2025, vBulletin Solutions Inc.
Copyright 1997-2025 67-72chevytrucks.com