Wow that sucks good thing you caught it. Send him pics and maybe get some money back, or something.

 

Wow, now I remember why I don't deal with JTR.

 

hope you all enjoy these pics of his wonderful work! btw the last pic is how the mounts SHOULD be, ill be giving him a call tomorrow

 

i actually used a 5.3 pan...

 

thats right, you had to modify the pan a little to get it to clear.

 

so anyone know if that ls2 pan will sit above the frame? and if so which one to use?? and what else needs to be changed to run that pan???

 

What is the GM part number for the LS2 pan??

 

so its decided, i will be giving a call to current performance for a harness, decided to leave it to the pro's on this one!

 

You guys need to read through the entire thread,most these questions have been answered
ls2 pn's https://ls1tech.com/forums/showpost....&postcount=373
ls2 pics https://ls1tech.com/forums/showpost....&postcount=366 PLENTY of clearance!

 

that was my original plan, but unfortunately it didnt work out... ended up cutting my frame instead =[

 

To be honest, this thread is so damned long we need to let it die. It is waaaaayyy to tough to dig through at this point and find information.

Thanks for the help though... forgot about the search thing

 

Noooooooo! The longer the better. B/c it's all in one thread instead of 20-30 little ones.

 

ok I got the jtr mounts too how bad are they? I haven't started my swap yet so it's not hard to fix this crap yet. I put my brackets the same way in the picture and mine do not line up the same as yours did. But they aren't even just like in the picture. I've had them over a month now think it's too late to send them back

 

You guys remember a few pages back when we were looking at the S's with some superchargers? I was thinking all this crap going on in my head about buiding this and building that 383? 400? 427?????? Hell if I do that I'll spend a fortune why don't I just buy a LS2 and drive it for a while and then throw a Maggie on it? What do you guys think?

 

You could do that....

Or you could buy an Iron 6.0L for a fair bit less money.

The maggie presents a bit of a dilema. Its a nice package, but for $5500+, it better be. And then there's the whole efficiency issue (its a roots, they don't do all that great in terms of adiabatic efficiency (they make to much heat)). The other problem is that the biggest maggie available is based on the Eaton M112. That is the same blower that comes on Lightnings & Cobras. Problem is it's too small. Its spinning pretty hard just to make 8 psi on a 4.6L or 5.4L motor. Just imagine how hard you've got to spin it to make 8 psi on a 6.0L with really good heads. Lets put it this way, the Lightning is spinning the blower something around 13,000 rpm stock with a 14,000 redline. Add a chip (increase engine redline) or an overdrive pulley and you're at the blower's limit. Add both, and you're over the limit and skating on thin ice.

Kenne Bell has some bigger blowers available (2.2, 2.6, & 2.8L) and they're screw type, which means they're more efficient. But, from what I've heard, their customer service leaves something to be desired. And the $$$ is comparable to the Maggie.

'JustDreamin'

 

I wanna stay with the aluminum block just to try and keep the weight balnce of the truck "as is" the LSx motors are very close to the 4.3L weight. Now I know a blower is just gonna mess that up but do that with a iron block and well it's just worse. But in all honesty all I really need to do is get about 400hp to the wheels I could prolly get real clost to that N/A with a LS2. We'll see.... I still gotta finish the 8.5" and the 4 link.

 

The advantages of the iron block is cost, ability to overbore (more than .010" cleanup), and increased rigidity (especially useful if you're boosting). And that extra 70 lbs or so is likely to be noticed.

If you're only shooting for 400rwhp, you should be able to get there NA. Do a 402, run good heads (the L92's look like they'll be absolutely awesome, once there's a decent manifold available) and it shouldn't be all that hard. Will depend upon what trans & such you're running as to how much flywheel hp you'll need, but I'd expect 450 to 475fhp will get you 400rwhp. Granted, your torque curve won't look like the supercharger's curve, so you won't have all that bottom end power, so that is something to consider. But you won't have the weight or the expense either.

'JustDreamin'

 

I'm trying to avoid (at least for today) a custom build. If I'm gonna do a custom build I'm gonna make a modern 400ci 4.125" bore (LS7 block) with a custom rotating assembly 3.75" stroke and 6.2" rods and run about 11-1 compresion and a L92 top end with the right cam I'll make my numbers easy. But it'll cost a fortune I just built a 500+ hp 383ci for my fathers truck ('65 C10) and spent about 10K. I'm trying to avoid that maybe. I'm just thinking out loud though.

 

Well, 10k is a fair bit of coin....

What do you think you can get into an LS2 for? Certainly less than 10k. And are you thinking of new or a used take out?

Depending upon your schedule, you might even wait for the L92 to come out as a replacement / crate motor (unless its out already). They're factory rated at 400hp (or something right around there). It does run a truck type manifold, which might pose hood clearance issues, and I'm not sure if the aftermarket has a handle on the controls yet, but it'd be worth thinking about.

If the timing isn't right, you could always pick up a 402 shortblock (available from a bunch of sources) add some good heads (check out the L92's or Patriot's special on 243 castings), an intake and such....

I think I've got about 7k in my swap, and only $1200 of it is a 6.0L truck motor. A bunch of other stuff (harness & PCM ($1200), transmission ($800), new transfer case (another $1000), plus a whole lot of little stuff) ate up the rest of the budget. I think I'm at about $11k total invested in the truck.

The reason I went with the iron block is cost & durability. I also went from the 4L60e to the 4L80e, so I already picked up 50lbs or so there, figured another 70lbs of iron block for what is probably a $1000 savings over the alum block was a trade-off I was willing to make. That, and I want to throw some boost at it later (when I get tired of just mearly adequate performance ) probably with a KB supercharger. I'd originally been thinking turbo, but having spent a fair bit of time under the hood and under the truck, I just don't think there's enough room.

Obviously, your desires are probably different than mine, so your solution is likely to be different. Let us know what you decide.

'JustDreamin'

 

I see what you are saying, my idea is to get it set up for road course style driving. That's one of the reasons I'm working the suspension so much and also leaning towards the M6 and really not wanting to take the weight penalty.