Xtreme Performance 5.3

[LT1B-Body]

Hello,
This is not a G-Body related question but is related to ls's. Since there is probably more ls swapped G-Bodys than ones with factory powerplants, I figured I'd ask here.

My grandpa has an 5.3 powered 06' Sierra that he adores, recently one of the #7 lifters decided it didn't want to do lifter things anymore and took the cam with it. He just wants a fresh short/long block so it's problem free.
I've had a bit of trouble with trying to find an LM7 crate engine with factory specs. Most have higher performance parts pre-installed (understandably), but it does not need more power than stock, so the 4L60E isn't in more danger.

I did find a promising candidate from a company I've near heard of called "Xtreme Performance Automotive" for a reasonable price. They don't include specs, but also don't imply that it has more than stock power.

LM7 5.3 Vortec Long Block Crate Engine Sale, Remanufactured Rebuilt

Our Chevy, GM LM7 5.3 Long Block Engine is on Sale. Superior to a rebuilt LM7 Crate Engine, this OEM motor is completely remanufactured with upgraded parts.

spprecision.com

Has any got an engine from the company? Or ever heard of it before?

 

[pagrunt]

Never used them but when my '08 Silverado's 5.3's #7 did the same thing I used a Jasper.

 

[LT1B-Body]

Never used them but when my '08 Silverado's 5.3's #7 did the same thing I used a Jasper

I cannot find prices for Jasper's engines, or where to get one.

 

[64nailhead]

Why not fix it? Every machine shop that works on anything from 2000 and newer knows how to fix that.

I’ll guess you need a set of standard lifters, a new stock oil pump, new gasket set - probably $450-500 in parts and machine shop of less than a $1k. Much cheaper than a long block. Or find a running takeout and spend the same money in parts and do it yourself.

His truck doesn’t have DOD,
Correct?


This is a no brainer to me.

 

[LT1B-Body]

My grandpa lives in FL and I'm in AZ, so I'm doing my best to help from 2k miles away. Otherwise I would help him and insist it be rebuilt.
I talked to him about replacing parts himself, which he's perfectly able to, but he's old and does not want to more work than swap long blocks. He'd rather pay more to know the long block is "new". Not my preferred method, but to each their own I guess.
Having a shop do it is still on the table, but most want $6-8k to do it. That'll probably be the last option.

Yes, it's a 06' gen 3 LM7 without DOD.

 

[WolfSS]

Here may be an option for you.

Chevy 5.3L L59 V8 Remanufactured Engine - 1999-2007 4WD/AWD - Powertrain Products

Chevy 5.3L L59 V8 Remanufactured Engine - 1999-2007 4WD/AWD by Powertrain Products . OEM quality, backed by the industry's best warranty.

www.powertrainproducts.net

 

[motorheadmike]

It sounds extreme!

If it needs stages or adjectives or other nonsense to sell you on it: walk away.

 

[LT1B-Body]

Here may be an option for you.

Chevy 5.3L L59 V8 Remanufactured Engine - 1999-2007 4WD/AWD - Powertrain Products

Chevy 5.3L L59 V8 Remanufactured Engine - 1999-2007 4WD/AWD by Powertrain Products . OEM quality, backed by the industry's best warranty.

www.powertrainproducts.net

That seems like a good option. Still a good price.