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#1 |
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Location: Moraga, CA
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Re: PROJECT: How would a Chevrolet dealer build a shop truck in the early 1970s?
Primed the oil system *before* the intake went on just to make sure. I’ll do it again right before start up.
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(Very) Slow-Going Build Thread: Stock 1970 Short Step with Stock 1970 LT-1 http://67-72chevytrucks.com/vboard/s...d.php?t=567340 |
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#2 |
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Re: PROJECT: How would a Chevrolet dealer build a shop truck in the early 1970s?
I had just seen a couple of horrifying Facebook videos where something went wrong and their rockers were dry and squeaking. I wanted to make sure I wouldn’t be that guy.
I was looking to see that all of the rockers got at least a little flow from the pushrods. They were all good.
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(Very) Slow-Going Build Thread: Stock 1970 Short Step with Stock 1970 LT-1 http://67-72chevytrucks.com/vboard/s...d.php?t=567340 Last edited by mattfranklin; 05-27-2018 at 08:31 PM. |
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#3 |
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Re: PROJECT: How would a Chevrolet dealer build a shop truck in the early 1970s?
The PO has plugged the intake water fitting in a clever way. He cut off a lug bolt and drove it into the fitting. I put less than 100 miles on the truck before I tore down the engine, but I never saw it leak. Anyway, I just wanted to capture that bit of Roadkill genius before it went away forever.
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(Very) Slow-Going Build Thread: Stock 1970 Short Step with Stock 1970 LT-1 http://67-72chevytrucks.com/vboard/s...d.php?t=567340 |
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#4 |
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Re: PROJECT: How would a Chevrolet dealer build a shop truck in the early 1970s?
Intake on and torqued.
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(Very) Slow-Going Build Thread: Stock 1970 Short Step with Stock 1970 LT-1 http://67-72chevytrucks.com/vboard/s...d.php?t=567340 |
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#5 |
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Re: PROJECT: How would a Chevrolet dealer build a shop truck in the early 1970s?
Carb, fuel line, and water pump.
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(Very) Slow-Going Build Thread: Stock 1970 Short Step with Stock 1970 LT-1 http://67-72chevytrucks.com/vboard/s...d.php?t=567340 |
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#6 |
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Re: PROJECT: How would a Chevrolet dealer build a shop truck in the early 1970s?
And now headers. With Remflex #2006 gaskets to prevent leaks. Highly rated by those that use them. We’ll see if I can screw that up. ;-)
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(Very) Slow-Going Build Thread: Stock 1970 Short Step with Stock 1970 LT-1 http://67-72chevytrucks.com/vboard/s...d.php?t=567340 |
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#7 |
Senior Member
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Location: Moraga, CA
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Re: PROJECT: How would a Chevrolet dealer build a shop truck in the early 1970s?
I'm in the middle of trying to get the radiator support rust repaired. I ran across this channel on YouTube. The guy is pretty talented and shares some cool tricks. I'm very surprised there are not more views. Really good info.
Radiator support rust repair: https://www.youtube.com/watch?v=8I42...RGvLl&index=53 This one I will follow because I bought the Brothers patch kit and his technique will be helpful. If I'd realized the extent of my rust I might have just bought one, but I'm still happy to save the $200 and do it myself. Inner fender rust repair: https://www.youtube.com/watch?v=fjnC...x7fJMEhQl&t=0s I'm just glad I *didn't* see this one before just buying a new inner right fender. I like to do everything myself, but my time is limited and it's so tempting to take on more. Really cool tricks with the guide pieces and jigs.
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(Very) Slow-Going Build Thread: Stock 1970 Short Step with Stock 1970 LT-1 http://67-72chevytrucks.com/vboard/s...d.php?t=567340 |
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#8 | |
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Join Date: Aug 2011
Location: new york, ny
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Re: PROJECT: How would a Chevrolet dealer build a shop truck in the early 1970s?
Quote:
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___________________________________________ Darien 1971 C10 LWB http://67-72chevytrucks.com/vboard/s...d.php?t=502964 |
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#9 |
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Location: Moraga, CA
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Re: PROJECT: How would a Chevrolet dealer build a shop truck in the early 1970s?
No more painting! Not that any of it is done other than the frame and suspension pieces I've reworked, but I just wanna drive it a little before winter. And I'm tired of painting and looking at rust. Phase two next summer will hit those things.
Two buddies are coming over Saturday to help button up the front end. Hopefully we can get it running so I can at least change its parking spot when needed. :-).
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(Very) Slow-Going Build Thread: Stock 1970 Short Step with Stock 1970 LT-1 http://67-72chevytrucks.com/vboard/s...d.php?t=567340 |
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#10 |
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Re: PROJECT: How would a Chevrolet dealer build a shop truck in the early 1970s?
I am so blessed to have good friends who know what they're doing. On Saturday two buddies came over.
We did troubleshooting on brake leaks and got the brakes bled and working well. Also installed inner and outer fenders. I still have a list of things to do but Jay and Biju helped me with major things that I couldn't do my myself very well and gave me a big boost in encouragement to keep chipping away at the rest of it.
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(Very) Slow-Going Build Thread: Stock 1970 Short Step with Stock 1970 LT-1 http://67-72chevytrucks.com/vboard/s...d.php?t=567340 Last edited by mattfranklin; 09-17-2018 at 04:00 PM. |
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#11 | |
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Join Date: Aug 2011
Location: new york, ny
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Re: PROJECT: How would a Chevrolet dealer build a shop truck in the early 1970s?
Quote:
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___________________________________________ Darien 1971 C10 LWB http://67-72chevytrucks.com/vboard/s...d.php?t=502964 |
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#12 |
Senior Member
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Location: Moraga, CA
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Re: PROJECT: How would a Chevrolet dealer build a shop truck in the early 1970s?
Just discovered that the water pump weep hole is leaking. Then discovered that this truck has the *long* water pump. The PO did say the motor came from a '78 truck, so they must have taken all of the accessories from the '78, too. I think for now I'll stick with that setup and just buy a long pump to get it running and driving.
I found this thread with some good discussion: http://67-72chevytrucks.com/vboard/s...d.php?t=436448
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(Very) Slow-Going Build Thread: Stock 1970 Short Step with Stock 1970 LT-1 http://67-72chevytrucks.com/vboard/s...d.php?t=567340 |
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#13 | |
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Join Date: Aug 2011
Location: new york, ny
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Re: PROJECT: How would a Chevrolet dealer build a shop truck in the early 1970s?
Quote:
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___________________________________________ Darien 1971 C10 LWB http://67-72chevytrucks.com/vboard/s...d.php?t=502964 |
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#14 | |
Senior Member
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Location: Moraga, CA
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Re: PROJECT: How would a Chevrolet dealer build a shop truck in the early 1970s?
Quote:
Ordered the long alternator pivot bolt plus spacer and some PCV parts and vent pipe, air cleaner, flame arrestor, and so on from the Corvette LT-1 and Camaro Z-28/LT-1 parts houses. Next couple of weeks I should get those in. I know I owe you guys a lot of pics. The motor is looking pretty sweet.
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(Very) Slow-Going Build Thread: Stock 1970 Short Step with Stock 1970 LT-1 http://67-72chevytrucks.com/vboard/s...d.php?t=567340 |
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#15 |
Senior Member
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Re: PROJECT: How would a Chevrolet dealer build a shop truck in the early 1970s?
It runs! I finally got it going this past Saturday. Such a relief. Calling it a post-Christmas miracle. It's great at mid- and high-rpm. Does not idle. Starts only with starter fluid. I revved it for about 20 minutes to make sure the cam was broken in. It sounds really, really good when it's revving.
I didn't have a timing light and so guessed at position. I hadn't needed one for about 10 years for the kinds of cars I was working on and my old one was broken. Now I need one. I have a new (used Craftsman eBay) one on the way, arriving Monday. But a buddy offered to lend his this week. I have Friday off, so I'll try to dial it in then. In the past I've done a pretty good job without a timing light, but I need to get it idling first. Adjust it for best idle and make sure it doesn't knock at WOT uphill. Then advance it a little until it just barely knocks at WOT uphill on RUL. And then play with it a little back and forth until it drives nice. But of course once I have the light I'll know what the best settings are.
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(Very) Slow-Going Build Thread: Stock 1970 Short Step with Stock 1970 LT-1 http://67-72chevytrucks.com/vboard/s...d.php?t=567340 |
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#16 |
Senior Member
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Re: PROJECT: How would a Chevrolet dealer build a shop truck in the early 1970s?
Next issue, even though it ran strong for 20 minutes plus at mid rpm during the cam break in it doesn't have enough oomph to refill the carb bowl after the prime burns up. I tried several times and my guess now is that it's the sock filter in the tank. I ordered a new sending unit from Eckler's. We'll see what happens.
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(Very) Slow-Going Build Thread: Stock 1970 Short Step with Stock 1970 LT-1 http://67-72chevytrucks.com/vboard/s...d.php?t=567340 |
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#17 |
Senior Member
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Re: PROJECT: How would a Chevrolet dealer build a shop truck in the early 1970s?
Replaced the fuel tank sender (even though the old one looked new) and blew out the line with compressed air. Also, inspected carb bowl and float (looked clean and float moved freely) and replaced sintered brass inlet filters. It started on starter spray, but then kept running strongly a long time. I was able to confirm the initial timing (with vac disconnected) at ~12-14 deg +/- and adjust the idle mixture screws to best idle plus a quarter turn out (all 4 of them).
Now it still seems to be overheating. (Previously, during the break-in, it did not overheat during the high rpm, only when I tried to lower the speed toward idle.) Will replace cap and thermostat. If that doesn't do it I'll get a shroud for the fan. Does anyone know the quality differences between Classic Industries and LMC? I think the LMC one is about $60 and the other one is about twice that. Maybe I have that backwards. Got a new proper GM dipstick with new upper and lower tubes to replace the old one with the bent upper tube. I realized why the old one was bent -- so it would fit with the shorty headers. Oh well. Now looking into stock/Corvette ram's horn options for exhaust manifolds so the proper dipstick will work. Looking at DD1's (Darien's) build and this link, too, for ram's horn manifold options: http://67-72chevytrucks.com/vboard/s...d.php?t=653906
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(Very) Slow-Going Build Thread: Stock 1970 Short Step with Stock 1970 LT-1 http://67-72chevytrucks.com/vboard/s...d.php?t=567340 Last edited by mattfranklin; 02-09-2019 at 04:27 PM. |
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#18 |
Senior Member
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Location: Moraga, CA
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Re: PROJECT: How would a Chevrolet dealer build a shop truck in the early 1970s?
Sorting out the shifter knob. My truck came with an aftermarket aluminum knob kind of half jammed on. The shifter thread was a little dinged up so I chamfered it. It measured 0.374 and looked like a fine thread so I bought a 3/8-24 nut to test it. Could not tease it on. So I bought a 10M-1.00pitch nut and it fit perfectly. Now to find a knob.
EDIT1: It looks like M10x1.00 might not be a thing, despite the box labeling for the nut. So maybe it's a 1.25mm pitch? EDIT2: There is an M10x1.00 nut available, but have not yet seen a shifter knob with one available.
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(Very) Slow-Going Build Thread: Stock 1970 Short Step with Stock 1970 LT-1 http://67-72chevytrucks.com/vboard/s...d.php?t=567340 Last edited by mattfranklin; 02-09-2019 at 06:23 PM. |
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#19 |
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Join Date: Aug 2011
Location: new york, ny
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Re: PROJECT: How would a Chevrolet dealer build a shop truck in the early 1970s?
Looks like you are making great progress. Wish I could say the same.
Keep it up!
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___________________________________________ Darien 1971 C10 LWB http://67-72chevytrucks.com/vboard/s...d.php?t=502964 |
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#20 | |
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Re: PROJECT: How would a Chevrolet dealer build a shop truck in the early 1970s?
Quote:
Upon good advice I got here on the drivetrain forum I wound up running a 3/8-24 die down the shifter threads. I little resistance at the top, but then it got easier the rest of the way down. Once that worked, I ordered a proper round knob. I also dug into the overheating issue. Not positive, but I think I might have originally put the thermostat and gasket together in the wrong order. Now I understand it should be thermostat first into the manifold, pointy side up and springy side down, then the hard plastic gasket with the printed on silicone sealing surfaces, and then the gooseneck. Not a hint of overheating at any speed. Also got the seat back in. May be ready for a test ride soon.
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(Very) Slow-Going Build Thread: Stock 1970 Short Step with Stock 1970 LT-1 http://67-72chevytrucks.com/vboard/s...d.php?t=567340 Last edited by mattfranklin; 12-08-2020 at 08:56 PM. |
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#21 |
Senior Member
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Location: Moraga, CA
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Re: PROJECT: How would a Chevrolet dealer build a shop truck in the early 1970s?
Last weekend ran a 3/8-24 die down the shifter knob treads. Now the new ball screws on great.
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(Very) Slow-Going Build Thread: Stock 1970 Short Step with Stock 1970 LT-1 http://67-72chevytrucks.com/vboard/s...d.php?t=567340 |
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#22 |
Senior Member
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Re: PROJECT: How would a Chevrolet dealer build a shop truck in the early 1970s?
Next up, will be installing a fan shroud. Ordered one from LMC, about $80 taxed and shipped.
May add a thermostatic fan clutch like these guys recommend: http://67-72chevytrucks.com/vboard/s...d.php?t=629097 And this is a good reference, too. http://67-72chevytrucks.com/vboard/s...d.php?t=520163 AND, just might put it back on insurance this week and take it off of non-op registration. Maybe a test drive soon. Scary.
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(Very) Slow-Going Build Thread: Stock 1970 Short Step with Stock 1970 LT-1 http://67-72chevytrucks.com/vboard/s...d.php?t=567340 Last edited by mattfranklin; 03-02-2019 at 10:39 AM. |
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#23 |
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Re: PROJECT: How would a Chevrolet dealer build a shop truck in the early 1970s?
New LMC fan shroud in. And now right-side-up even -- warning stickers came stuck to bottom which confused me for a few minutes.
Now just have to get the grille and hood latch back together and then get insurance and registration back on it. Oh, and tires. ;-) Hope to be test driving soon.
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(Very) Slow-Going Build Thread: Stock 1970 Short Step with Stock 1970 LT-1 http://67-72chevytrucks.com/vboard/s...d.php?t=567340 |
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#24 |
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Re: PROJECT: How would a Chevrolet dealer build a shop truck in the early 1970s?
Hey Matt, Post some pics for us!
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___________________________________________ Darien 1971 C10 LWB http://67-72chevytrucks.com/vboard/s...d.php?t=502964 |
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#25 |
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Re: PROJECT: How would a Chevrolet dealer build a shop truck in the early 1970s?
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(Very) Slow-Going Build Thread: Stock 1970 Short Step with Stock 1970 LT-1 http://67-72chevytrucks.com/vboard/s...d.php?t=567340 |
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corvette, dealer, lt-1, rally, shop truck |
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