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I love this swap. Now you have me rethinking rebuilding my L98. Altho I would likely stat N/A and want to keep my 700R4 to keep costs down. I'm sure that would put me in cable hell. I'm keeping a close eye on this build. It's good to know there are a few guys out there that might be able to support if someone takes on a project like this.
It's pretty cool that some parts have become commodity such as the mounting plates and accessory drives. I wish there were options for aftermarket C-Beams with different trans mounts like you have with transmission crossmembers on other cars but I also understand that it's a limited market even further limited by the different transmission lengths and differentials used in the C4.. Makes it difficult to make a one size fits all piece.
The C beam is easy fix, I just cut mine in half and welded in an extension chunk. If you don't have a tig welder, you could make one out of steel, of course a thinner gauge of steel would be required.
I'm using the 700R in my 2005 LQ9 swap. The bell housing bolts up fine. I'm also reusing the LQ9 flex plate with no adapter. I had to use my die grind for the factory torque converter to bolt up.
My LQ9 is sitting forward of where the L98 was originally. You also have to get a new drive shaft made as I had to move the transmission.
I'm using an 04 corvette power steering supply hose, it fit in there pretty good and its cheaper than making a custom hose.
I love this swap. Now you have me rethinking rebuilding my L98. Altho I would likely stat N/A and want to keep my 700R4 to keep costs down. I'm sure that would put me in cable hell. I'm keeping a close eye on this build. It's good to know there are a few guys out there that might be able to support if someone takes on a project like this.
cable hell?
i wouldn't waste the $ building a gen I. Before this a built a 355 for my thirdgen and also did a vortec 350 swap. What a waste of effort and $ when you can pick up lsx engines on the cheap and they're already a millions times better/more efficient.
Had to pull it out to I can put my oil drain in the pan plus I forgot my inspection plate anyways. What a pain-had to do it by myself so I separated them. It's going back in together from now on.
anyone have experience doing the harness for a c4? I've decided I'd like to do this myself since I'm tired of relying on others plus it'll save a good chunk of $.
Drain fitting is in but there's always setbacks. I had 3 broken exhaust studs but was only able to get 2 out. I ended up getting a spare head for cheap so I'm just
Gonna swap it. Should have the engine/tranny back in this weekend though. From there I'll install my accessories and have my exhaust done.
anyone have experience doing the harness for a c4? I've decided I'd like to do this myself since I'm tired of relying on others plus it'll save a good chunk of $.
Ch@os did his own wire harness if I remember correctly. I think he might have taken an f-body harness and trimmed it to work, I'd have to search to find out.
Small update-my buddy who was going to do the harness and hotside bailed on me so I started on the wiring myself. I spent a few hours yesterday removing all the wires not needed from my blue/green pcm harness and I am just about done labeling everything. I've been using lt1swap.com for the pin layouts. Of the few guys who've done C4 lsx swaps did anyone do their own harness? So far its been pretty simple-just tedious and I'm wondering at what point does it get complicated or if it even does. Also I haven't touched my C4's harness yet and I still need to know what wires will be needed (I am keeping the digi dash).
Bill, ZFDoc did this engine swap, mated to a ZF6, but I didn't ask details. He has an adapter plate for the ZF. I may have this project in my future, too.
Are these guys still around? Seems like most end up buying an aftermarket harness. I've already got a relay/fuse kit from BP automotive that's made for this swap and it'll definitely help clean up all the wiring.
Are these guys still around? Seems like most end up buying an aftermarket harness. I've already got a relay/fuse kit from BP automotive that's made for this swap and it'll definitely help clean up all the wiring.
This is about where Ch@os gets into the wiring details of what he did.
he starts talking about the wiring around post 186 I think he used an f-body harness and spliced it to his c4 harness.
Ya the wiring is a pain in the butt. I have yet to fire my car yet.
I spent yesterday fabbing up a 3in exhaust for my car. I probably have around $120 into the build. I had a bunch of 3in elbows/bend and exhaust piping laying around from previous builds.
3in is probably over kill for the car.
My fuel system is very leaky I hate cheap skate over seas fittings.
What application is the LUK clutch kit you are using? Prat numbers? I am starting the same swap on my 85, I have a 2003 6.0 and going to use the 4+3 DNE trans. Do you know what starter motor is needed for this application?
Thanks and good luick.
Just gotta add a spacer and turnbuckle but the hood my large case alt.
Originally Posted by rdchaplin
What application is the LUK clutch kit you are using? Prat numbers? I am starting the same swap on my 85, I have a 2003 6.0 and going to use the 4+3 DNE trans. Do you know what starter motor is needed for this application?
Thanks and good luick.
I'll look up the pn when I get home this evening. What stage of the swap are you in?
about halfway through with my harness and need to bolt my c-beam in. Also decided to use electric power steering and finally have my alternator mounted.
as for the starter I've read they're interchangeable and also otherwise so I'm just going to wait till I'm about done and pick one up at a local parts store in case I need to exchange it.
I'll look up the pn when I get home this evening. What stage of the swap are you in?
about halfway through with my harness and need to bolt my c-beam in. Also decided to use electric power steering and finally have my alternator mounted.
as for the starter I've read they're interchangeable and also otherwise so I'm just going to wait till I'm about done and pick one up at a local parts store in case I need to exchange it.
What type of power steering pump are you using for the electric power steering? Are you running it to a cooler?
This is what I'm planning on for my alt-obviously still needs spacers. Anyone see any issues with this?
Not much progress made lately-need a hand getting my c-beam bolts in and at a stand still with my harness.
How does the C4 harness come out near the battery? I've got the half that goes through the firewall out and have undone the nuts near the rest but it's a big gooey mess and I'm still trying to get it all out. Also I'm not 100% on how to go about merging the harnesses as far as what exactly is needed from the stock C4 harness. Seems like most are just buying aftermarket harnesses but I've got a truck harness stripped down and labeled.
04-06-2017, 12:20 PM
I have yet to fire my car yet.
