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66gtoconv

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Reply with quote  #1 
This was our father & son project in 2010. My Son was 11 then & he also used it as his 4H project. It was in really ruff shape when we found it at a swap meet. No engine, no drive set up, broken frame, body & steering seized. They were originally came with a rope start 3 or 5 hp Briggs & had no electrical anything & top speed was around 10-15mph. It now has a modified electric start 8hp Briggs with a full electrical system, headlights taillights, marker & orange underneath lamps with a front bumper & rear hitch to pull a trailer we built to go along with it. We took it out & opened it up & was clocked going 45mph & what a ride LOL! It has a solid frame with a lawn tractor style front axle & spindles.. That was plenty fast enough.. What a blast it was.. I have several musclecars but this was fun as well. That's my son in the 2010 parade driving the Dune Cat & the 1st picture & the last few photos are of him building his small block Chevy to go in his 88 GMC lifted truck that sitting in the middle of the last picture of some of our cars  20170120_145515.jpg 

  20170324_114611.jpg  20170324_121847.jpg  20170324_121847 (2).jpg  20170324_122012.jpg  20160727_151351 (1).jpg  20160727_151237 (1).jpg  20160727_151043 (3).jpg  20170324_122928.jpg  20170324_122928.jpg  20170119_182008 (1).jpg 20170119_130536.jpg  357ci Chevy with  Edelbrock performer TBI injected, polished/ported Vortec heads 10.2 to 1 compression,  Comp Cams camshaft, roller rockers. build by my 17 yo son AJ with a little help from me

20160914_182747.jpg   The GMC truck is what his engine is going in. The 55 Chevy & 67 Firebird 400 are mine & the Superbird & Shelby are friends

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moderator

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Reply with quote  #2 
66gtoconv,

What a great story.  COMPLETE WITH PIX! 

WELCOME to the forum. Both you and your son will fit in real well here.

Make your self comfortable.  Thanks for sharing the pix.

jim
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Kurganhunter

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Reply with quote  #3 
66gtoconv, The before and after show that you and your son have great vision for dragging home that project.That is an amazing transformation. Your son has gearhead in his dna. I, (we) would love to see you profile the GMC truck in some pics. From the pic, it looks killer. The hood is pretty cool. I love the shirt too. That is the GM firing order, Friend. Mike
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66gtoconv

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Reply with quote  #4 
Thanks friends, Yes that is his favorite shirt even if it does cover some Mopar as well (Lol) At least its not Ford, (kidding we like them all) here are some more pix & a video of the 1st firing up of his 357 Chevy (which by the way is the original numbers matching 350 engine bored .040) in the 88 GMC K2500. This truck has every option that was available for it. The only ones it doesn't have are the options where you had to choose one or the other. I was working as truck technician doing all repairs at one of the largest Chevy dealerships in Wisconsin throughout the 80s & 90s & beyond. Of all the 100s? if not couple 1000? new trucks sold there I don't ever recall seeing or working on one of the 88 to 2000 C/K trucks with a factory rear window defogger & this GMC has one. I bought the GMC in the late 90s when it showed up at my own shop in need of repairs & the last owner started on it & got in over his head. I repaired it & used it for years, even installed a bored 400(409ci) small block  Now have passed it on to my son(except the 409sbc, that's going back old school &  into my 55 Chevy 150 project loaded with 60s/70s speed equipment, early 70s Edelbrock 2x4 tunnel ram, Thrush side pipes, Daisy 200s etc... but that's yet another story). We cleaned/painted/detailed the engine compartment, replaced gas tank/pump/sender/fuel lines. Installed drilled slotted HD rotors, calipers & all new brake hoses, lines, shoes & hardware. Knocked off all the lovely rust that WI winters & its fleets of glorious salt trucks manage to create over time, Lol. Off from the chassis & treated it to POR15.  20170401_191003.jpgafter 3 weeks chassis prep its ready for the engine Saturday morning   20170402_142129.jpg  its planted Saturday evening (delayed because found that flexplate was cracked) 20170402_164001.jpg  Sunday afternoon the engine oil pressure primed, coolers all flushed & new filters & some Go Fast Chrome stuff (lol) Bolts, belts, hoses, fluids filled & ready to fire up with open headers  20170402_163618.jpg    I have a video of it starting for the 1st time but it isn't compatible to upload & I don't know how to convert it from MP4. Here is a pic, 80psi oil pressure, no overheat or leaks or rattles/knocks or problems. We set the timing & topped the fluids, broke the cam in & sounds great with open headers! Were going to adapt the original crossover pipe with its dual 2 1/4" into a single 3" pipe & hook it up to the collectors. We have scrapped the OEM pancake cat converter & running with the original exhaust for now until $$ permits a better setup. I bought a Walker lifetime warranty 3" single inlet to dual 2 1/4 outlet muffler for it back in 96 & I think there sorry they sold me one because I have already replaced it 4 times. It was $140 back then lol. The Trucks been sitting 8 years until now & I don't think they will honor it anymore 20170402_164037.jpg  Next steps restore the day 2 American Racing rims & mount the new 33" BF Goodrich on, relicense it & drive it while we get the rest of the new sheet metal to repair the rust We have a rust free box & new cab corners so far. Needs rockers & fenders still. (High School Graduation & 18th Bday coming up in May, so likely presents)
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moderator

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Reply with quote  #5 
THANK YOU!

love the pix AND the story

put a smile on my face
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Kurganhunter

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Reply with quote  #6 
66gtoconv, That is the.40 over 350 running 80 psi on the oil? I posted a question in "problem solving" asking is 75 psi was normal for a new 383 stroker sbc with 40 weight oil. Does that sound right to you? P.S. I just bought the tee shirt on Ebay LOL Thanks, Mike
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66gtoconv

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Reply with quote  #7 
Hi Mike, I just built a 383 stroker for my nephews 92 Camaro RS & we pulled the lame 3.1 v6 out. 80psi is not unusual for a freshly rebuilt SBC at all when its cold. You have to remember given that the engine was built correctly & the tolerances set correctly meaning .001 to .002 bearing oil clearances. The engine clearances are tight, any performance engine I build depending on its intended use? I install a Hi volume oil pump at least if not a Hi volume Hi pressure oil pump. There is a difference. Also when an engine is 1st started (meaning every time whether it has 0 miles on it or 100K miles) is when oil pressure is at it highest. As it warms up to operating temp the metal expands & the oil becomes more liquid. It is normal that the oil pressure then drops. I just explained this to my son yesterday because he was concerned when we drove his truck & he noticed the oil pressure drop to under 50psi at IDLE after the engine was completely up to temp (200 degrees). I think the old school rule of thumb still applies that you should have 10psi oil pressure for every 1000 rpm you plan to run for an engine to hold together over time. If your using a thicker viscosity like a straight 40w oil, it will cause to it run above normal oil pressure using even a stock replacement oil pump. I would recommend 10w30 instead. Also remember to use a Zinc additive or oil with Zinc to your engine if you are using a flat tappet cam/lifter set up or you will scrubb the cam lobes out & ruin it. I have seen that happen to a number of customers engines when they did not add it. I think it was around 2002-3?? that because all car manufacturers were? using a roller cam/lifter set up. That the government had oil companies remove the Zinc Phosphorus out(which is the extreme mechanical pressure lubricant for flat tappet cams) because of environmental issues. These are my thoughts on it & never have had problems Bob  
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Kurganhunter

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Reply with quote  #8 
Bob, Thanks for the info. My engine builder broke it in before delivery. He suggested the straight 40 wt. I am still in the build process (see "My 54' Chevy project" in this forum) and it is not yet on the road.I start it every couple of weeks to inspire myself to push on. I feel better knowing what you have given me as insight. Thank you for sharing your knowledge, Mike
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loach

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Reply with quote  #9 
You have created another Gear Head,  Way to go!

Your son will remember it and the time with you for his whole life.  Next, you'll have to get some grandkids and get them started! LOL
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