Stock FAQs

how much hp can a stock lly handle

by Gail Kemmer I Published 3 years ago Updated 2 years ago
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Without engine work, the stock LLY can put out ~500rwhp.Feb 27, 2008

How much HP can a Allison 1000 5 speed handle?

roughly 350 to 400-rwhp
It's the electronic side of the transmission sensing excessive slipping and placing the unit in fail-safe mode, where only one forward gear is available. As you've probably deduced up to this point, the stock Allison will handle roughly 350 to 400-rwhp in five-speed form and 425 to 450-rwhp in six-speed trim.Dec 2, 2017

How much boost can a lly handle?

The max boost you can make with a stock LLY hairdryer and still be efficent/useful is around 32-34 PSI.Sep 18, 2005

How big is a stock LLY turbo?

One benefit for horsepower junkies is that the LLY made use of the largest turbo ever offered on any Duramax engine. Not only was its 62mm, 11-blade compressor wheel inducer the biggest, but the height of its exhaust vanes were the tallest at 15mm (vs. 11.2mm on the LML engine available from '11-'16).Dec 5, 2018

How much boost does a stock LLY turbo make?

Stock turbo though you will be good right around 30 psi.Apr 5, 2011

Are LLY Duramax good?

Under the moniker “LLY” is the 2nd version of Duramax. LLY Duramax is an upgrade to an LB7 diesel truck. It is reliable, powerful, and does not exceed many of the emissions of modern L5P diesel trucks. There is no common injector failure issue among LLY Duramax trucks compared with LB7 trucks.Mar 22, 2022

How much horsepower does a 2005 Duramax have?

310 hp @ 3,000 rpm
2004.5-2005 GM 6.6L Duramax LLY Specifications
Production Years:2004.5-2005
Horsepower:310 hp @ 3,000 rpm
Torque:520 lb-ft @ 1,600 rpm
Battery:Group Size 78
Transmissions:ZF S6-650 (6-Speed Manual)
22 more rows
Sep 13, 2021

How much power can a stock LLY make?

Without engine work, the stock LLY can put out ~500rwhp.Feb 27, 2008

How long will LLY Duramax last?

The Duramax engine should last up to 300,000 miles before needing major repairs if you are wondering how long it will last. The number of miles an engine can run depends on how well it was maintained and driven over its lifetime.Dec 2, 2021

How long do LLY injectors last?

Most well-maintained LLY injectors last between 150,000 to 200,000 miles.Sep 19, 2019

What is LLY Duramax?

LLY. The LLY (internally called the 8GF1) (engine code "2") is a 6.6 L; 403.9 cu in (6,619 cc) turbocharged engine which debuted in mid-2004 and continued until the end of 2005. It is a 32-valve design with high-pressure common-rail direct injection and aluminum cylinder heads.

How much boost does a stock 05 Duramax?

The factory map sensor which electronically measures boost on a 2001-2004.5 trucks only reads to 22-24 psi, 2006-2016 MAP sensors read to 37 psi. If you want to read boost numbers higher you'll need an aftermarket gauge.Jul 28, 2016

How do I know if my Duramax has a boost leak?

However, common symptoms of a boost leak include Increased Smoke, Higher EGTs, Excessive Lag, and Loss of Power. If you work with diesel trucks long enough, you'll see leaks just about everywhere in the charged air system at one time or another.May 6, 2016

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