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#51 | |
I'm trying....
![]() Join Date: Oct 2013
Location: Athens, GA
Posts: 2,599
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Re: 1970 K20 Z62 Full Restoration
Quote:
This posting takes time. I won't get us up to real time tonight, but maybe close. I have to go do real work every so often or I get in trouble here.
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1970 K20 Z62 https://67-72chevytrucks.com/vboard/...56#post9334756 1970 Blazer http://67-72chevytrucks.com/vboard/s...d.php?t=645076 1969 K10 SWB CST http://67-72chevytrucks.com/vboard/s...52#post8520352 1971 K20 Z84 https://67-72chevytrucks.com/vboard/...90#post9047290 1946 B.F. Avery Model A Tractor http://67-72chevytrucks.com/vboard/s...55#post8292555 "Sometimes I wonder if zander208 was even real..." |
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#52 |
Registered User
Join Date: Oct 2012
Location: VENTURA COUNTY CALIFORNIA
Posts: 285
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Re: 1970 K20 Z62 Full Restoration
Loving the detail. Incredible work!
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#53 |
I'm trying....
![]() Join Date: Oct 2013
Location: Athens, GA
Posts: 2,599
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Re: 1970 K20 Z62 Full Restoration
Ok...let's move on to the transmission. Muncies are bullet proof too right? Again, depends on the firefight. And this poor girl had been pounded on. Input splines and shaft were rung out. Forks were thread bare. But gear sets seemed pretty good. Reverse had been dinged up (as they are).
Took a lot of time and effort to get the case clean. Several runs through the electrolysis tank.
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1970 K20 Z62 https://67-72chevytrucks.com/vboard/...56#post9334756 1970 Blazer http://67-72chevytrucks.com/vboard/s...d.php?t=645076 1969 K10 SWB CST http://67-72chevytrucks.com/vboard/s...52#post8520352 1971 K20 Z84 https://67-72chevytrucks.com/vboard/...90#post9047290 1946 B.F. Avery Model A Tractor http://67-72chevytrucks.com/vboard/s...55#post8292555 "Sometimes I wonder if zander208 was even real..." |
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#54 |
I'm trying....
![]() Join Date: Oct 2013
Location: Athens, GA
Posts: 2,599
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Re: 1970 K20 Z62 Full Restoration
New main shaft and bushings. I did that job one night when the girls were away. Shaft in the freezer for a week, bushings in the oven. Still gave all my little 12 ton press wanted. Bearings, seals, balls, etc.
Couldn't come up with the part number correct block out plug for the TCS sending unit. (TCS was only on half tons). But it turns out a generic drain plug is pretty close to a dead nuts match.
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1970 K20 Z62 https://67-72chevytrucks.com/vboard/...56#post9334756 1970 Blazer http://67-72chevytrucks.com/vboard/s...d.php?t=645076 1969 K10 SWB CST http://67-72chevytrucks.com/vboard/s...52#post8520352 1971 K20 Z84 https://67-72chevytrucks.com/vboard/...90#post9047290 1946 B.F. Avery Model A Tractor http://67-72chevytrucks.com/vboard/s...55#post8292555 "Sometimes I wonder if zander208 was even real..." |
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#55 |
I'm trying....
![]() Join Date: Oct 2013
Location: Athens, GA
Posts: 2,599
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Re: 1970 K20 Z62 Full Restoration
The broadcast code for the 4sp was HA for at least a couple of years during this time. It was on both sides of the case and stenciled in yellow. They make code stencils for GM cars, but not this one. So we had to have this one made. The first pic is a factory original stencil. Mine ended up a little too neat. It is hard to find the right level of factory sloppy.
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1970 K20 Z62 https://67-72chevytrucks.com/vboard/...56#post9334756 1970 Blazer http://67-72chevytrucks.com/vboard/s...d.php?t=645076 1969 K10 SWB CST http://67-72chevytrucks.com/vboard/s...52#post8520352 1971 K20 Z84 https://67-72chevytrucks.com/vboard/...90#post9047290 1946 B.F. Avery Model A Tractor http://67-72chevytrucks.com/vboard/s...55#post8292555 "Sometimes I wonder if zander208 was even real..." |
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#56 |
Registered User
Join Date: Jan 2010
Location: Here
Posts: 5,484
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Re: 1970 K20 Z62 Full Restoration
Good to see you back on here with another build . Blue is the color around here lol
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#57 |
I'm trying....
![]() Join Date: Oct 2013
Location: Athens, GA
Posts: 2,599
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Re: 1970 K20 Z62 Full Restoration
Alright...now let's talk about the engine. See the first picture and there's no surprise that this engine was stuck. I had real anxiety that this block was going to be cracked or wouldn't clean up quick. It's never fun when you're taking out a piston with a hammer.
I had to call A LOT of machine shops before I found one that said they could save my deck numbers (while still decking the block). I took it down to a production shop outside of Atlanta that specialized in diesels. They had it forever, but they basically got it done (not the way I would have preferred, but I had my numbers). Unfortunately I had to do some handwork on the deck to get the upper corner. Miraculously the crank cleaned up at .010 under and the block at .030 over.
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1970 K20 Z62 https://67-72chevytrucks.com/vboard/...56#post9334756 1970 Blazer http://67-72chevytrucks.com/vboard/s...d.php?t=645076 1969 K10 SWB CST http://67-72chevytrucks.com/vboard/s...52#post8520352 1971 K20 Z84 https://67-72chevytrucks.com/vboard/...90#post9047290 1946 B.F. Avery Model A Tractor http://67-72chevytrucks.com/vboard/s...55#post8292555 "Sometimes I wonder if zander208 was even real..." |
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#58 | |
I'm trying....
![]() Join Date: Oct 2013
Location: Athens, GA
Posts: 2,599
|
Re: 1970 K20 Z62 Full Restoration
Quote:
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__________________
1970 K20 Z62 https://67-72chevytrucks.com/vboard/...56#post9334756 1970 Blazer http://67-72chevytrucks.com/vboard/s...d.php?t=645076 1969 K10 SWB CST http://67-72chevytrucks.com/vboard/s...52#post8520352 1971 K20 Z84 https://67-72chevytrucks.com/vboard/...90#post9047290 1946 B.F. Avery Model A Tractor http://67-72chevytrucks.com/vboard/s...55#post8292555 "Sometimes I wonder if zander208 was even real..." |
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#59 |
I'm trying....
![]() Join Date: Oct 2013
Location: Athens, GA
Posts: 2,599
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Re: 1970 K20 Z62 Full Restoration
The parts in this motor are better than need be honestly. They did the block and crank in Atlanta, but the finish machine work I brought home to my local guy. He did the head work (hardened seats, positive valve seals), all new everything. And they balanced my rotating assembly. They build race engines and I ordered my parts through them. So everything is a little bit extra considering the application. We had a long conversation about cam. I wanted bone stock. I lost the convo and it's got a mild lift on it.
I will say it all went together pretty easily. Only real headache was separating the rod caps. I had to get the special tool to get them apart. They ground them, re-trued and balanced them. And apparently torqued the hell out of em. Sean Murphy rebuilt and restored my QuadraJet. I was sad to find out this week that they've gone out of business. Glad I got this on in under the wire. They did three for me and they all looked great and the first two performed great. We'll see on this one.
__________________
1970 K20 Z62 https://67-72chevytrucks.com/vboard/...56#post9334756 1970 Blazer http://67-72chevytrucks.com/vboard/s...d.php?t=645076 1969 K10 SWB CST http://67-72chevytrucks.com/vboard/s...52#post8520352 1971 K20 Z84 https://67-72chevytrucks.com/vboard/...90#post9047290 1946 B.F. Avery Model A Tractor http://67-72chevytrucks.com/vboard/s...55#post8292555 "Sometimes I wonder if zander208 was even real..." |
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#60 |
Senior Member
![]() Join Date: Jan 2007
Location: Turlock, CA
Posts: 8,649
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Re: 1970 K20 Z62 Full Restoration
Lots of eye candy piling up here
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Please help my sister in law with her battle with cancer https://gofund.me/902f6fce Project "C10 Fever" (68 factory black 396 swb) Project "Little Sister" (70 c10 blue original paint refresh) Project "Blue Bomb" (70 c30 blue original paint refresh) SOLD Project "Vitamin C" (71 c10 orange original paint refresh) SOLD |
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#61 |
I'm trying....
![]() Join Date: Oct 2013
Location: Athens, GA
Posts: 2,599
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Re: 1970 K20 Z62 Full Restoration
I did use stock style head bolts mainly for the aesthetic. Another think I hope I don't regret that.
Advanced Distributors rebuilt my distributor. Note red factory mark. By the parts book, this shouldn't be the correct oil fill cap. But I believe it's what came on this engine. And the 80-mile barn find 70 looks to have the same cap. So I found an NOS version for the build.
__________________
1970 K20 Z62 https://67-72chevytrucks.com/vboard/...56#post9334756 1970 Blazer http://67-72chevytrucks.com/vboard/s...d.php?t=645076 1969 K10 SWB CST http://67-72chevytrucks.com/vboard/s...52#post8520352 1971 K20 Z84 https://67-72chevytrucks.com/vboard/...90#post9047290 1946 B.F. Avery Model A Tractor http://67-72chevytrucks.com/vboard/s...55#post8292555 "Sometimes I wonder if zander208 was even real..." |
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#62 |
I'm trying....
![]() Join Date: Oct 2013
Location: Athens, GA
Posts: 2,599
|
Re: 1970 K20 Z62 Full Restoration
Restored the rubberized insulator on the valve cover tabs.
Got her on a transport stand to take back to the machine shop to break in on the dyno last Monday. It was the last day off I'll have for a while. I had an appointment, but a race engine that was on the dyno ahead of me blew...resulting in some carnage. So unfortunately it'll run (or not) for the first time without me. Maybe as soon as tomorrow. I wanted to run it in before we painted it or put it in the truck. That way if there's a problem or a leak, it'll be bad, but at least it won't be in a finished truck. Crazy that we've gotten away with starting these motors in the truck without major issues on these other builds. It goes on the dyno without then water pump or fuel pump...and turns out the starter too. I'm learning.
__________________
1970 K20 Z62 https://67-72chevytrucks.com/vboard/...56#post9334756 1970 Blazer http://67-72chevytrucks.com/vboard/s...d.php?t=645076 1969 K10 SWB CST http://67-72chevytrucks.com/vboard/s...52#post8520352 1971 K20 Z84 https://67-72chevytrucks.com/vboard/...90#post9047290 1946 B.F. Avery Model A Tractor http://67-72chevytrucks.com/vboard/s...55#post8292555 "Sometimes I wonder if zander208 was even real..." |
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#63 |
I'm trying....
![]() Join Date: Oct 2013
Location: Athens, GA
Posts: 2,599
|
Re: 1970 K20 Z62 Full Restoration
__________________
1970 K20 Z62 https://67-72chevytrucks.com/vboard/...56#post9334756 1970 Blazer http://67-72chevytrucks.com/vboard/s...d.php?t=645076 1969 K10 SWB CST http://67-72chevytrucks.com/vboard/s...52#post8520352 1971 K20 Z84 https://67-72chevytrucks.com/vboard/...90#post9047290 1946 B.F. Avery Model A Tractor http://67-72chevytrucks.com/vboard/s...55#post8292555 "Sometimes I wonder if zander208 was even real..." |
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