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Old 01-18-2018, 09:03 PM   #51
71CHEVYSHORTBED402
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Re: Build that 71 402 already

Pulling the engine Saturday with some assistance, but today I pulled the transmission. So easy with the transmission jack.

Interesting set of bolts for the transmission to block. Can't swear they're factory, because we pulled the engine once. From my observation, we were real good about using the same bolts, and none were added.

Two (Grade 8) 9/16 flange bolts. Bolt threads are 3/8-16 x 1.3/16, of which 5/16" is shaft. Heads are stamped with a circle.

One (Grade 5) 9/16 flange bolt. Bolt threads are 3/8-16 x 1.3/16, of which 5/16" is shaft. Head is stamped "A".

Two 9/16 flange bolts. Bolt threads are 3/8-16 x 1.3/16, of which 5/16" is shaft. These are unusual, because though they're flange bolts, the heads are not recessed. That and they have four markings, so I can't say what grade. The heads are stamped "IiL P SiB".

One (Grade 5) 9/16 flange bolt. Bolt threads are 3/8-16 x 1.1/4", and no shaft. Head is stamped "M". This bolt was used to retain the transmission dipstick tube and vacuum retainers.
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71 C10 Custom Deluxe, SWB, fleet, 402/400TH, A/C...Resource intensive

72 Cheyenne Super, LWB, fleet, C20, 402/400TH, A/C. Driver and tinker truck
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Old 01-18-2018, 11:18 PM   #52
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Re: Build that 71 402 already

Bolt pics please
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Old 01-19-2018, 01:42 PM   #53
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Re: Build that 71 402 already

Quote:
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Bolt pics please
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72 Cheyenne Super, LWB, fleet, C20, 402/400TH, A/C. Driver and tinker truck
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Old 01-20-2018, 05:02 PM   #54
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Re: Build that 71 402 already

Couple simple items left for a stripped frame. Let the build begin
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72 Cheyenne Super, LWB, fleet, C20, 402/400TH, A/C. Driver and tinker truck

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Old 01-23-2018, 10:58 PM   #55
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Re: Build that 71 402 already

Sorry Iím late to this party. It is literally my new favorite thing. What a resource. Thanks for sharing. Canít wait for more. Outstanding work.
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Old 02-01-2018, 06:10 PM   #56
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Re: Build that 71 402 already

Thank you Iron and welcome. Had my gauge cluster "T-Boned". It will be a good day when installed. Before and after
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71 C10 Custom Deluxe, SWB, fleet, 402/400TH, A/C...Resource intensive

72 Cheyenne Super, LWB, fleet, C20, 402/400TH, A/C. Driver and tinker truck

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Old 02-02-2018, 12:37 AM   #57
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Re: Build that 71 402 already

"Had my gauge cluster "T-Boned"."

Haha, I think I like that

I appreciate you Tony and thank you again. Nice to see what your up to on the project.

Take care,
TBONE aka Tom
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Old 02-20-2018, 08:19 PM   #58
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Re: Build that 71 402 already

Project is going no where, that's my report I have to clean the lower control arms and transmission crossmember and it's too damn cold of late and I'll pass. Waiting on 10" locking casters for make-shift axles, so I can roll the frame to clean and then it's off for powdercoat.

I managed to peak into the heads for casting numbers. I knew they were replaced with the rebuild. They're matching high performance heads, apparently installed on Camaro and Corvette 396/427 BBC. Word is 10:1 compression instead of 8.5:1 with the original heads. Couldn't tell you why.

For what it's worth, date code translation. I looked this info. up once already, but lost it. Think I'll save it this time

http://chevellestuff.net/qd/head_casting_by_year.htm
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Old 02-25-2018, 06:41 PM   #59
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Re: Build that 71 402 already

I knew that one day I'd be able to back this into the driveway again. It just came sooner than expected. The wheels are smaller than expected too, but it does have a nice stance
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71 C10 Custom Deluxe, SWB, fleet, 402/400TH, A/C...Resource intensive

72 Cheyenne Super, LWB, fleet, C20, 402/400TH, A/C. Driver and tinker truck

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Old 03-04-2018, 10:06 PM   #60
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Re: Build that 71 402 already

OT: This is EXACTLY like my first car, stick, color and all. Has to be one of the funnest cars to drive on Earth. If parts were available, which they're not by any measure, and I had to choose between that and my project..............don't tell my truck I said so - it wouldn't be an easy choice.

https://www.youtube.com/watch?v=rywD5tOQTI0
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Old 03-20-2018, 12:35 AM   #61
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Re: Build that 71 402 already

Not much going on, the weather has been bad and I can't make real progress until the frame is washed for powder coat. That and some BIG personal life changes. Long story short I've been busy with other things. Looks like I'll be landscaping a yard and setting up another house. Sets me back 2 months.

But I'm not ignoring my truck completely, I've been collecting new replacement hardware, mostly spares, though I've heard it's a good idea to replace lock washers. I've also read it's best to replace the prevailing torque lock nuts, and I'm doing just that. It's that or use lock washers, I prefer the nuts. What an expensive project, the "spare" hardware wasn't even cheap. I'll strip the replacement hardware and have it plated (or coated) with the rest.

On a side, I read a report that says lock washers are near worthless, if not defeat the purpose. Can't say if credible, but I'm building the truck as it left the factory. Less the missing frame/crossmember rivets anyway
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71 C10 Custom Deluxe, SWB, fleet, 402/400TH, A/C...Resource intensive

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Old 03-30-2018, 07:00 PM   #62
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Re: Build that 71 402 already

Got this done today. I'm a weld away from powder coat, though I'm going to have them do the upper control arms first, see if I like their work etc. I MAY have one done in satin and the other in flat.

"Problem" is their sample for satin is a bent-up oil pan and looks like crap. Next to it is a beautiful piece in flat
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71 C10 Custom Deluxe, SWB, fleet, 402/400TH, A/C...Resource intensive

72 Cheyenne Super, LWB, fleet, C20, 402/400TH, A/C. Driver and tinker truck

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Old 04-05-2018, 07:12 PM   #63
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Re: Build that 71 402 already

I had my control arms powder coated to see if I like the results. I do, so I'll have the frame and all done by the same place.
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Old 04-23-2018, 11:48 PM   #64
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Re: Build that 71 402 already

Currently in engine paint prep mode. Really, valve cover mode, they're going to be super. Those shown below aren't them. Long story, the covers in the pic. are off a 396. I believe 402 had the rubber oil plug (aka oil cap). I know mine did, and it will again.

Anyway, here's a picture I took some time ago - it may come in handy for someone.
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Old 06-04-2018, 07:51 PM   #65
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Re: Build that 71 402 already

Picked up my hardware today. Happy to say it turned out better than I had imagined. I had the original hardware and some new hardware black zinc plated. You can't tell the difference, both new and old came out the same.

Out of all of this just four pieces came out poorly, and all four were bad along the bolt threads.

The truck will have some bling too, which is the clear zinc.
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72 Cheyenne Super, LWB, fleet, C20, 402/400TH, A/C. Driver and tinker truck

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Old 06-04-2018, 08:01 PM   #66
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Re: Build that 71 402 already

71SHORTBED402, nice build thread, but could you be a little more detailed? Just kidding - hope everyone has a sense of humor! Awesome thread and love all the documentation. I'm excited to see the finished product. Nice work.
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Old 06-05-2018, 07:42 PM   #67
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Re: Build that 71 402 already

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71SHORTBED402, nice build thread, but could you be a little more detailed? Just kidding - hope everyone has a sense of humor! Awesome thread and love all the documentation. I'm excited to see the finished product. Nice work.
I've come to the conclusion I'm slow at this No surprise, I'm slow at everything I'm introduced to. Currently in paint engine mode. Doing the intake, pan, chain cover, valve covers and block separately. Too much for me all at once, I'm brushing it on. At least most of it.
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Old 06-09-2018, 05:48 PM   #68
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Re: Build that 71 402 already

Brushed these with POR-15 engine paint. The pan and valve covers are being done professionally. I really like the paint. Over two hours a coat to paint the block, but music makes it manageable.
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71 C10 Custom Deluxe, SWB, fleet, 402/400TH, A/C...Resource intensive

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Old 06-13-2018, 03:20 PM   #69
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Re: Build that 71 402 already

How to distinguish between a low and high horn:
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Old 06-13-2018, 11:14 PM   #70
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Re: Build that 71 402 already

Quote:
Originally Posted by 71CHEVYSHORTBED402 View Post
How to distinguish between a low and high horn:
Great pic! Thanks for posting. Good documentation right there.
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Old 06-14-2018, 01:09 AM   #71
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Re: Build that 71 402 already

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Great pic! Thanks for posting. Good documentation right there.
You bet deadhead. I read the low horn was supposed to be marked "L". I suppose some might be. J is pretty close, maybe they screwed up

You can also tell a difference by the width of the flat perimeter, which the high horn is wider.

When I first dove into this, I thought high horn meant mounted the highest
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Old 06-14-2018, 06:51 PM   #72
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Re: Build that 71 402 already

Just found this on torque specs, lubes and sealers. Can't say it's right, but from what I've read it looks real good. Nice someone did this. Thread locker on cam sprocket bolts?

https://www.jegs.com/tech-articles/s...ine-specs.html
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Old 06-18-2018, 12:25 AM   #73
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Re: Build that 71 402 already

Freshened up my actuators today. They're easy to test with the a vacuum/pressure tool. Never used one before today. The engine compartment actuator on project truck had a leak, probably from the sloppy paint job I did long ago. But then I remembered why I bought my driver truck, and it works.

Apparently the actuator in the cab is painted for aesthetics and the other is not. You can also tell the difference between them by the stud in the hole in the rod for the engine compartment actuator. The hole in the rod for the cab takes a link. The threaded studs are also placed differently. With the port facing down, they're at 3 & 9 o-clock for the engine compartment actuator, and approx. 2 & 8 o-clock for the cab actuator

On the side, what a great invention. I may buy a new one for the engine compartment, pending. Both of my outer actuators seem to require more pressure to close than my in-cab actuator. I'll double check that when it's ready to handle. If there is a difference, maybe it's by design. Or maybe a bit worn, couldn't tell you.
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71 C10 Custom Deluxe, SWB, fleet, 402/400TH, A/C...Resource intensive

72 Cheyenne Super, LWB, fleet, C20, 402/400TH, A/C. Driver and tinker truck

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Old 06-18-2018, 09:40 PM   #74
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Re: Build that 71 402 already

It's always the last place you check. And for me, too often it's last chance.

Otherwise not worth the picture, I was cleaning one of these door clips and dropped it. Looked for a few minutes when I realized the dogs had misbehaved, so I walked down to the end of the circle to grab them. Then I cleaned my freaking garage, because I'm going to find it. But NOPE. Checked my shoes and clothes, NOPE. So that's it man, I'm probably over an hour into it and last chance, perhaps it snagged onto my clothes and I dropped it. So I walked the path down to the circle again, didn't see it, turned around and she was right in front of me.

I can't remember if the truck uses 4 or 6, but six I've got. I think they're galvanized. Just happened to have galvanized paint.
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71 C10 Custom Deluxe, SWB, fleet, 402/400TH, A/C...Resource intensive

72 Cheyenne Super, LWB, fleet, C20, 402/400TH, A/C. Driver and tinker truck

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