496 CI engine and 4L80E Trans for sale

[TopLess62]

Hi guys,

I have a 496 complete running engine and 4L80E trans from a 2001 Yukon XL 2500 for sale. Could this be the big block you need for your project??

It comes complete with front dress, accessories and wiring.

$3000 OBO

Thanks!!

 

[Peer81]

Just curious, will the 4L80 fitt under the C3 without cutting the floor up?
Good luck with the sale!

Groeten Peter

 

[TimAT]

Is the 496 a GEN 6 BB or a Mk IV?

 

[TopLess62]

Is the 496 a GEN 6 BB or a Mk IV?

Hi Tim, I just saw your post...finals were a killer this week!

Here's what wiki has to say:

The Vortec 8100 (RPO L18) is a V8 truck engine. It is a redesigned Chevrolet Big-Block engine and was introduced with the 2001 full-size pickup trucks. It is an all-iron engine (block and heads) with two valves per cylinder. It retains the same bore centers as the old 7.4 L big-blocks, but stroke was upped by 9.4 mm to reach 8.1L (496cuin) for a total of 107.95 mm bore and 111 mm stroke. Power output ranges from 225 hp (168 kW) to 450 horsepower (340 kW) and torque from 455 lb·ft (617 N·m) to 490 lb·ft (664 N·m). Vortec 8100s were built in Tonawanda, New York. The Vortec 8100 is the engine used in the largest Uhaul, their 26-foot (7.9 m) truck. GM stopped installing big block V-8's in the Silverado HD trucks, when the GMT-800 series was discontinued in 2007. 8100 marine engines range from 300 to 500 hp and come with a stand-alone Engine Control Module (ECM). The last L18 was manufactured in December 2009.

Important differences between the Vortec 8100 and older big blocks include a changed firing order (1-8-7-2-6-5-4-3), a new 18-bolt head bolt pattern, different symmetrical intake ports, different oil pan rails and the use of metric threads throughout the engine. The fuel-injection system for the Vortec 8100 is nearly identical to that used on Gen III engines, right down to the fuel and spark tables in the ECU


Anything else you need to know, just ask! Thanks!

 

[Hib Halverson]

The Vortec 8100 is a Gen VI Big-Block.

It is a low-rpm engine designed for high torque output in 2500 and 3500 series trucks. I'm not sure that wiki entry was correct when it states that the 8100 was available in a 450-hp version in trucks. My limited research into press kits from the early 00s was the highest output was 340-hp SAE.

It is not a high performance engine and would have to be substantially modified to serve in that role, ie: it wouldn't make much sense as an engine for a "restomod" Corvette or other hot rod because a lot would have to be changed to increase its power output and extend it's rpm range.

One wanting a high-performance BBC is better to look for one of the "crate motors" sold by GM Performance Parts or the aftermarket.

As for the 4L80-E....installing it into a C3 would probably require both changes to the car's frame and floor pan.

 

[TopLess62]

I think there are plenty of speed parts out there if you know where to look. A google search on 496 speed parts netted this:

There is limited swapability between the 8100 and most other bigblocks.The shortblock is a gen 6 type lowdeck with a 4.25" bore and 4.375" crank and stock length heavy duty rods.The crank is nodular iron with winged counterweights and is a good performance piece.I assembled a 555 using the crank from a 8100 vortec in a later 502 block{.030" over} and with lightweight pistons and steel 4.385" rods it lives fine making 850 hp at 7000rpm.We had some of the prototype stuff when it first came out and GM's intentions were to build a 496 inch shortblock that used standard bigblock valve angles and valvetrain components but had symetrical port prostock style heads ib it.The early version that I worked on had a 10 bolt head pattern like a ford motor but it used massive 5/8" studs.The intake used 4 bolt per side composite plastic intake.The heads flow very well and with a little bowl blending and some 2.25" intake valves they will outflow even the best aftermarket standard bigblock heads,and the cross section is small enough to make it all very streetable.Like I saud,the heads are very prostock like.I never worked with an entire production engine,but I know that the production piece uses a standard bigblock head bolt pattern and gen 6 water passages,and will use at leas regular mark 4 rocker arms if the studs are correct.It would be a great performance piece,and when I first got it I was working on building a combination to run my rae car in a class that requires production part number car or truck casting engine blocks and heads,with displacemnt limited to whatever you could stuf in a stock block,and since the original prototype was a siamsed wall casting,I was looking into it as the ultimate loophole combination once the engine went into production.The rulemakers required carbs and a regular distributor and sheet metal intakes or distributorless coversions were illegal,so the engine lost it's potential.All in all,if you dont mind working with the efi,the longblock has lots of potential for a drag race or street rod buildup.Good luck.

Link: 8.1L 496 vortec big block chevy, what is it?

850 horses sounds pretty good to me. As for the trans...its bullet proof...

 

[Hib Halverson]

What you find by Googling 496 speed parts may or may not be credible.

Facts are that a stock Vortec 8100 is not suitable for high-performance use in a restomod'ed Corvette or other hot rod. That's not to say, you can't spend some money and make it suitable.

I agree what, as long as sustained high rpm is not the intent, the stock Gen 6 BBC short block is pretty good, excepting, maybe, the pistons.

Now, given different cylinder heads and valvetrain, you'd be headed in the right direction.

A problem might be the composite intake manifold so some replacement with greater port volume would be needed if the duty cycle is to be high performance.

The 4L80-E is, indeed, a strong transmission but it would be troublesome to fit into a C3. That said, it's nothing that a good fabricator could fix. As it's computer-controlled, that trans, if not connected to an PCM calibrated for it, needs a separate transmission controller.

 

[TopLess62]

What you find by Googling 496 speed parts may or may not be credible.

Facts are that a stock Vortec 8100 is not suitable for high-performance use in a restomod'ed Corvette or other hot rod. That's not to say, you can't spend some money and make it suitable.

I agree what, as long as sustained high rpm is not the intent, the stock Gen 6 BBC short block is pretty good, excepting, maybe, the pistons.

Now, given different cylinder heads and valvetrain, you'd be headed in the right direction.

A problem might be the composite intake manifold so some replacement with greater port volume would be needed if the duty cycle is to be high performance.

The 4L80-E is, indeed, a strong transmission but it would be troublesome to fit into a C3. That said, it's nothing that a good fabricator could fix. As it's computer-controlled, that trans, if not connected to an PCM calibrated for it, needs a separate transmission controller.

Hib, the very point of buying a used motor is to hop it up yourself. Either can hop it up or you can't...I say you can, and so do you. Point made.

Scoggins-Dickie gets $6300 for a 502 long block with 338 horses...Crate-Engines//GM Performance Parts 502ci / 338hp HT502 Engine | SDParts - 1-800-456-0211

With my ad, you get roughly 300 horses in a used, complete turn key motor with a trans....for $3000. I'd say thats a pretty good deal.

Hop it up if you want or don't. Lots of guys that run Vettes run trucks and Buicks too...

My point is, it CAN be hopped up, it CAN be shoehorned into a Vette and it IS a good deal. It's up to the guy that buys it to decide what to use it for. Maybe there is another guy out there like me that would love to have nearly 500 cubic inches with 700 horse power but cant write just one check for it...this might be just the perfect thing for him/her.

Let the buyer decide if that is what he wants to do. Thanks for your input.