I purchased a used 6.0 Lq4 with 125,000 miles on it. I tore it completely down and was surprised to see very little wear on the cylinder walls, the rod bearings, the main bearings and the cam bearings. I plan on a total rebuild anyway. So I can either get some forged rods and pistons and go from there or what I want is a 408 stroker.
The engine will be going into my rock crawler so torque is what I really want. I was pricing the 408 stroker kits and then saw TREperformance has a stroker. So I know nothing about TREperformance and yes I used the search here. I found a thread about their injectors, one thread where a guy bought their stroker short block and had an oil pan leak though it sounded as if it was because he used a used oil pan gasket. I did not see anything about the quality of their short blocks.
So what I am asking is are their short blocks any good and what route should I go. I already have TSP heads that are ported and polished and milled 0.035. I also have their 224r cam. I plan on using a 4 barrel carb intake and Holley Sniper EFI. Any info you guys can supply would be appreciated. I am new to the LS engine stuff.

 

If everything looks good why waste $$$ to rebuild??

You are going to spend a fortune to be possibly disappointed... Carb? did your engine come with the efi stuff and harness? Why not use that its already paid for

 

As long as it is apart why not freshen it up? No I am not using a carb, I said 4 barrel intake with Holley Sniper EFI. Why would I be disappointed with a rebuild or a stroker? Sorry not following your thought process. If I tear it apart why not install new bearings and piston rings at least? When I tore it apart I inspected all the bearings for wear which was very minimal, but then I just tossed the bearings into my recycle bin for metal. So new bearings throughout is a must now anyway. I had the truck intake and the ecm with the complete wiring harness but honestly that makes for an ugly engine. So I sold all of that stuff. I like the 4 barrel intake with EFI look way better.
I also would like the extra torque of a stroker. I also want higher compression as I am considering e85 fuel. I know I don't need a ton of horsepower for rock crawling but we take the Jeep to the dunes also where I would appreciate more horsepower for drag racing and hill climbing. I just don't have a ton of experience with the LS engine as I am predominately a Ford guy. I don't know anything about TREperformance hence the reason for this thread. Do they build good quality short blocks, does anybody here have personal experience with using their stuff, etc.? I appreciate your response but there is no way I would ever tear an engine down for inspection and then reuse the bearings no matter how good they look. I mean 125,000 miles is still a lot of miles no matter how little wear it shows. The cylinders still have a very distinct crosshatch with very little carbon ridge at the top of the cylinder wall but at the very least it will get honed if not bored. You might call it a waste of money, I call it insurance that everything is copacetic before I run it.

 

I am with you 100% I know nothing about TREPerformance but if you are tearing that far into a motor it's pennies for cheap insurance even if everything looks good! You building a rock bouncer or something else? I have a JKU here I keep thinking of LS swapping since I have the leftover stock block from my FBody.

 

Eventually I will have a full tube chassis rig with just some body panels that make it look part Jeep still. Right now it is a Jeep YJ frame and body with a 355 EFI crate motor, a 700r4 built trans, 1988 corporate 14bolt rear with 5.38 gears and a spool, a 1992 Ford dana 60 high pinion up front 5.38 gears, and also spooled. It is 4 linked in the rear and 3 linked in the front with track bar. It has Fox racing coilovers shocks with 18" of travel. It has a full hydraulic PSC ram for steering and disc brakes all around. It also has a lot of cage tubing and all links have 1.25" Heim joints. I can put one tire on a 6 foot tall index ramp and have the other three tires all on the ground. It has my own design cut Super Swamper Irok tires that are 42-14×15 with inner air lock bead locks.
I have even thought about selling all my LS stuff and going 540 big block for the extra weight up front to help keep the front end down and digging on extreme angle climbs. Like I said though eventually it will be all tube chassis rock bouncer style rig that still looks like a Jeep. I also have a really built th400 trans for when I get more power. I did some research on some of the Ford sites and while the threads I read did not bad mouth TREperformance must guys questioning about getting a Ford stroker built from them were told to spend the extra 300-500 and get one built from one of two companies they mentioned. So that might answer my question. Sure I would like to not spend more than I have to but when I build or get something built, reliability and quality of work is what I want most. I am just trying to keep up with my son and my daughter's boyfriend when we go to the dunes. My son has a 79 Ford F250 that we built up a 460 for running on e85 and my daughter's boyfriend has a very built 400 in a 78 F150. They are both pretty fast and usually only lose to the full on race trucks out there. The kids drive theirs on the streets also during the summer and store them in the winter months. My son however is going to get forged rods and pistons for his 472 build with maybe twin turbos. He already has the turbos.

 

Ohhh I don't know because there are plenty of guys pushing these engines into the 9's on 3-5,000 budgets including car

no rebuild, just a 100-300k junkyard engine, add cam, springs etc

 

That's fine, some people would rather have something they KNOW will go the distance. Besides this is rock climbing, not drag racing where the engine doesn't run hard for more than 15 seconds at a time.

 

Ive been here a while and never heard of them.

 

Their price doesn't appear to be much cheaper than Texas Speed. IMO buy from a sponsor who (based on my research) has a pretty good reputation building and standing by their product.

I'm debating same options as you, rebuild my 85K Z28 347 for boost, or buy a short block or long block 370. If I decide on a 370, it will be from Texas Speed.

 

You didn't say where you were from, but, I can almost guarantee some of, or all of those guys that are outrunning the Fords are running LS power. I would ask around in their circles about who they are using for engine builders...

 

Well even if I go 408 stroker in my Jeep I doubt I will beat the boys but it sure would make it closer lol. I have to turn a 42" tall tire. Both the boys run sand paddles when out on the dunes. Building an engine is not my real issue. It was comparing the cost of buying the forged internals and then either assembling it myself or paying to have it done professionally or just get a short block already assembled. I was looking at TSP also as they are who I got the heads and cam through anyway. I may just sell all the LS stuff and go stroker big block for gobs of torque and more weight over the front. It gets very light in the front when climbing almost vertical rock ledges. Thanks for all the replies though.