Knomadd '71 SWB C-10

[Bennett68C10]

[mcbassin]

Time to start a new chapter in this thread...

WOW! What a score! Congrats man, that should do the trick just fine.

[boostedc10]

[GAc10boy]

Daaang!

[Hart_Rod]

Originally Posted by knomadd

Time to start a new chapter in this thread...

61 actual miles!!! Pulled from a 2016 Chevy Express 3500 Passenger Van. Its roof was damaged during transport and is apparently more to fix it than part it out.

Plans are to add headers and stuff it in, get it tuned and go. Might do a cam swap, but I want to keep the VVT (doesn't have DOD or AFM, so good there) so I'm a little limited right now, but still researching it.

I've already ordered Dakota Digital VHX gauges and an in-tank retrofit fuel pump from Tanks Inc.

Nice score. DOD (displacement on demand) and AFM (active fuel management) are the same thing. If I were you I would run it as is, becaaaauuuusssse... When you change the cam, you need to change the springs. When you change the springs, you'll want to change the lifters. When you change the lifters/pushrods, you have to pull the heads -> new head gaskets and head bolts.......With a bigger cam/springs, you'll need a stall converter. A6 verts aren't cheap..... Once you get all the parts together and running, you'll need to find a person that knows how to tune it. For the motor, that will be fairly easy, for the A6 transmission not so much, it's harder to tune than the motor...

Just sayin, (read my 68 SC motor swap)

The VHX gauges work great with these motors. Would recommend you get the Bim 01-2 OBDII module. I will allow you to display tranny temp, IAT, gear pattern, and a host of other things. You can have who ever builds your harness to pull the data wire so you don't have to connect it to your OBDII port.

Have fun! and let me know if you have any questions.

[gringoloco]

Dude. Sweet.

[knomadd]

Originally Posted by RRR18

Oooooooh

Originally Posted by SKT

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Originally Posted by rincones

I will be ready to see the progress in person

Originally Posted by Bennett68C10

Originally Posted by mcbassin

WOW! What a score! Congrats man, that should do the trick just fine.

Originally Posted by boostedc10

Originally Posted by GAc10boy

Daaang!

Originally Posted by gringoloco

Dude. Sweet.

Thanks guys, I'm pretty excited about it.

Originally Posted by Hart_Rod

Nice score. DOD (displacement on demand) and AFM (active fuel management) are the same thing. If I were you I would run it as is, becaaaauuuusssse... When you change the cam, you need to change the springs. When you change the springs, you'll want to change the lifters. When you change the lifters/pushrods, you have to pull the heads -> new head gaskets and head bolts.......With a bigger cam/springs, you'll need a stall converter. A6 verts aren't cheap..... Once you get all the parts together and running, you'll need to find a person that knows how to tune it. For the motor, that will be fairly easy, for the A6 transmission not so much, it's harder to tune than the motor...

Just sayin, (read my 68 SC motor swap)

The VHX gauges work great with these motors. Would recommend you get the Bim 01-2 OBDII module. I will allow you to display tranny temp, IAT, gear pattern, and a host of other things. You can have who ever builds your harness to pull the data wire so you don't have to connect it to your OBDII port.

Have fun! and let me know if you have any questions.

Thanks for the info and advice Rob. It's very much appreciated! Especially since this is my first LS swap, and I know very little about them. Particularly when it comes to tuning.

I'll go ahead with the stock motor as-is, for now. I was on the fence, but after your statement, I'm completely on solid ground.

I had no idea the trans would be so hard to tune. Glad you pointed that out though.

I'll look into the BIM 01-2. I've read up on it before and liked the abilities it has, but didn't want to plug it into the port and lose the gauges when I'm plugging in a reader or something.

I have a friend close by who recently did a Gen V 5.3 L83 and he did his own wiring with the help of another member. He said I could do it myself, so I think I'll try it. Any idea where I can find the wiring pinout for this setup? Maybe some pointers and an idea of what wire you're referring to for the data wire?

I'm sure I'll have a lot more questions, but I'll start with your 68 thread. Followed it since late 2012, but I could definitely use a refresher.

[Hart_Rod]

It's just the data line that feeds the OBDII port. Check this website out: http://lt1swap.com/geniv_harness.htm

LS1Tech.com is good also.

[knomadd]

Originally Posted by Hart_Rod

It's just the data line that feeds the OBDII port. Check this website out: http://lt1swap.com/geniv_harness.htm

LS1Tech.com is good also.

Thanks again Rob. I'm sure I'll have more questions for you later. I joined LS1Tech.com a couple weeks ago and have been trying to learn as much as I can. Soooo much information though I'll check out lt1swap.com a bit more too.

I got notice this morning that the engine and transmission made it to a Houston facility. Hopefully that means it will be here today! *fingers crossed*

[rincones]

LT1SWAP helped me out very much.
[IMG][/IMG]

[Jason7121]

When you get it tuned they can delete afm/dod from ecm so it will stay in 8cyl mode at all times.

[mcbassin]

Originally Posted by rincones

LT1SWAP helped me out very much.

I used LT1swap.com for my wiring diagram too. He also has reflashed my PCMs. I think he charges like $80.
Brendan is very helpful when you have a question too.

[aboesec10]

heck yeah dude! lets blow it apart!!!!!

[knomadd]

Originally Posted by Jason7121

When you get it tuned they can delete afm/dod from ecm so it will stay in 8cyl mode at all times.

This engine doesn't have AFM/DOD. Only VVT, which I plan to keep.

Originally Posted by rincones

LT1SWAP helped me out very much.

Originally Posted by mcbassin

I used LT1swap.com for my wiring diagram too. He also has reflashed my PCMs. I think he charges like $80.
Brendan is very helpful when you have a question too.

Thanks guys, I'll contact Brendan to see what he can do. I have an E78 ECM though, and I'm seeing that they are only used in 2016 models, so I'm not sure yet if anyone has the capability of tuning them. May be waiting a while for it to be done.

Originally Posted by aboesec10

heck yeah dude! lets blow it apart!!!!!

Soon.... Soon.

I do have some bad news to go along with it. FedEx Freight shipped the drivetrain and wouldn't you know it... DAMAGE!!!

The harness is pinched (at least one severed wire), intake is broken/cracked, 2 coils are broken, and plug wires. Several harness plugs are broken, including one for the ecm (the blue J1 plug), all 4 O2 sensors are damaged and they mangled the dipstick/fill tubes... not that I was planning on using them, but dam!

Notice the two plug wires hanging in front of the manifold? Yeah, broken...

This is the worst O2 sensor, but all are bent and 2 more have exposed copper wires

The worst coil, but the 2nd has the harness plug broken out of it, with part still in the coil

Pieces of the intake fell off... check the fins, they are all supposed to be straight and vertical.

The broken J1 plug.

I have contacted the seller and they are going to put in a claim and refund me the cost of the damage. Hopefully FedEx will cover legitimate costs and not just what they think it's worth. Although, I can't expect the seller to eat the cost of shipping damage, I hope they all make this good.

[knomadd]

more pics of the damage...




The trans tail shaft seal was damaged, and there was wood particles inside... sorry for the blurry pic, didn't notice it until today.

[aboesec10]

crap that sucks. hopefully we can find the connectors without too much trouble.

[knomadd]

The seller is trying to find a value for the damaged parts so I can get a partial refund for the damaged cost. They are also looking for a harness to just replace the one I have. Hopefully they have better luck than I do. Called the local Chevy dealership and talked to the parts department with the VIN and was told they had two different part numbers, but couldn't get a price. Neither of those part numbers matched up with what my harness has on it.

I would just replace it, but Speartech is one of the only places I can find that does wiring for the 6L90 transmission with the engine harness. And I can't tell without calling them first if they would even do it for this new of a computer. Regardless, their harness is $950 without any add ons..... that's a bit too rich for my blood.

I emailed Brendan at LT1swap.com and he replied and told me he has no info for the E78 ECM, and does not do any programming on them either. Looks like that's a dead end for me. Hopefully GM didn't do a lot of changing on their wire colors from one ECM to the other. I think I'll see if I can trace the wires and start my own pinout. We'll see if I can do it. I'm not an electrical engineer, or even a fan of wiring, so this is going to be a BIG challenge.

If anyone knows another company that makes swap harnesses, let me know. I'll look them up and see if they can provide me with a new harness for this swap.

[GAc10boy]

Man, I really hope they make that right for you. That'll be a sweet set-up once you get it all straightened out.

[Advanced Design]

Ugh...they must have piled other packages on it.

Check BP, PSI, Howell for harness options.

[knomadd]

Thanks for the suggestions Doug, I've already put out requests for Speartech and Howell, but I've just added BP and PSI. Hopefully one of them is able to do this with the new ECM.

[knomadd]

So a little update...

Speartech and PSI both told me they do not support the E78 ECM. PSI said they suggest buying their harness and an E38 ECM to work with their harness. BP never got back to me, nor did Howell.

I shall be trying to practice thinning out my junk harness before I get the replacement, so I know what needs to be kept and what can to go.

I did get confirmation from the seller that they have already acquired all the broken parts and will be shipping them to me, except the harness. They have put in a special order with GM to have a harness pulled from the assembly line. No idea how they have that kind of pull, but that will be awesome! Hopefully it works out. No ETA on that yet though.

[knomadd]

Here's the engine, somewhat stripped getting ready for paint.


Check out how clean the intake runner & back of valves are!!!

[knomadd]

And here it is in all the Chevy Orange glory!


I will be painting the crank pulley and all the accessories semi-gloss black. The crank pulley has already started to rust a bit, so it needed painting anyway. Don't mind the overspray.

[rincones]

Awesome motor.
Great job on da paint

[mcbassin]

Looks great Duane! I saw a guy on Instagram that makes harnesses, I think he's @modernvintagesystems