fogged306

He went with a sikky kit and I believe these were the headers. http://www.thermalnator.com/products/swap_parts/headers He seems to think the engine bays are identical by looking at them, but I'm not sure. I think we'll measure up his engine bay the best we can with his engine in there and see what we come up with. I'd rather not go with manifolds if we can avoid them. If no other option, worst case we can use the f-body manifolds that came with the engine because they fit with tons of room to spare. We do have a guy who makes headers locally (and for a decent price) and hopefully can track him down and see what he can do if we can't fit any pre-mans. I did call a local driveshaft company yesterday and I think we're all set in that department... hopefully. Other than that, I appreciate the replies guys, I was thinking the same thing on the clutch pedals, I was just hoping you could give us some insight into adapting the master in. By the way, what kind of tweaking did you have to do with your gas pedal dts300z?

I have a pin-out diagram for the LS1 ECU and we have the service manual for the 300zx so I'm just going to mate them together myself. We aren't at that point yet so I'm not even thinking about it, but when I get there I'll be sure to post some pics and info on it.

A little note to someone doing a swap like this: You don't have to remove the engine harness from the engine. If you disconnect the main plug from the ECU and the only other plug attached to that harness inside the vehicle, and feed them through the harness's grommet through the firewall, the entire harness will come out with the engine. That would probably have saved quite a bit of time had I done it that way, but I didn't realize it until it was too late, so I'll pass the info along so someone else doesn't make the same mistake. We got the firewall rough cut today and are planning to mock the engine in the bay tomorrow.

The stock HVAC unit won't fit if you do the swap the way we're doing it. The unit itself is pretty large and would be in the way of the bellhousing. I'm sure it is possible to retain full functions with the HVAC unit with some ingenuity and some fabrication. So far we haven't looked into the gauge issue. I have an electronics background (somewhat) so I'm going to try to integrate it on my own if we can't find any sort of harness. Short of that we'll probably just get new gauges. Other than that, I was thinking of removing as much of the stock ECU wiring as I can to make things cleaner and simplier down the road if/when there are issues.

Thanks. Thats what I'm looking for, keep an eye on this thread as often as you can, if you could. I know there are gonna be differences between the LS and the LT but the general idea will be the same and I'd love to have someone who's been there to give advice. I just saw your build thread and that will come in handy. I can definitely use that as a build reference. Thanks again!

So we've begun a 300zx 2+2 LS1 swap and I'm just looking for any input, suggestions that will make my life easier if I can get them. We will be going the route of cutting the firewall and have already removed the interior and are in the process of removing the engine and trans now. We're shooting for having the car done as soon as possible so we should have the drivetrain out and the hole cut in the firewall by this weekend at the latest. I do have a steel fabrication shop at my disposal and will fab up mounts if needed but would like to know if there are any pre-mades that will make our job easier. A little info on the car: It's a 90 2+2 N/A auto currently. It does have t-tops and do I want to tie the frame together to support the extra power we'll be making. As of right now, we will be leaving the stock rear-end in the car because it will be running street tires only anyway, so hopefully we should be good there. Basically the questions I have now would be to people who have done this swap firsthand and have some experience to share with me. I would like to know of any snags (if any) we'll will run into along the way. What you did for headers, how long the driveshaft has to be, how big to make the opening in the trans tunnel, measurements of motor mounts, ect.. Any help/suggestions would be greatly appreciated. And we'll be sure to take pics and update the project along the way. P.S. .. I did search on here for quite a while for some hard data on this swap but haven't found anything that goes into good detail on the areas I'm fuzzy about. So far I've seen a few threads about mock-ups and making the swap work without cutting the firewall, but I'm looking for info on the firewall cut swap only.