SoonLS1Powered

iTrader: (1)

The LS2 trailblazer alternator will NOT work with the L76 bracket. It may be possible to cut away and grind off quite a bit of the alternator and bracket, but I think you will have to grind off so much that the parts are going to loose too much strength.

I would like to know if possibly the corvette alternator or gto alternator would work....I could find those pretty easily at a junk yard. The L76 alternator isn't cheap.

HSV-GTS-300

Here's some pics of some of the L76 G8-GT car accessories.

Troux

iTrader: (4)

2005 - All LS2s were 24x, E40 PCM
2006 GTOs were 24x, E40 PCM
2006-2007 Corvettes were 58x, E38 PCM
2006+ - all LS2 crate engines were 58x


Ultimately, you can work with either for a swap project, but I found the GTO LS2's computer to be almost designed to be swapped. Many of the important body functions are separated in their own connector on th E40.

onefastrx7turbo

iTrader: (5)

I have some questions about this setup. I like the GTO alternator placement. I've got an L92 engine block. I also have the truck alternator. My question is: Will the LS2 GTO brackets work? I'm only using the alternator, no PS or A/C. I just want close fitment of the belt to the block for clearance and the alternator mounted down low. So, my question is: Can I use the truck alternator with the GTO alt bracket? can I just use the LS2 vette waterpump and tensioners? thanks!

HSV-GTS-300

I say no.
The Vette harmonic balancer, tensioners and waterpump run the belt X distance away from the block.
The GTO harmonic balancer, tensioners, alternator and waterpump run the belt X + 3/4" distance away from the block.
The truck alternator runs the belt ????Z???? distance away from the block.

thedak

iTrader: (1)

If I remember correctly the GTO alternator is completely different from the rest of the GM line up. I don't think it will bolt up.

motorhead0922

The center to center distance of the mounting bolt holes on Corvette alternators is 6.06". All other LSx alternators (trucks, Camaros, GTOs, etc) have a 5.45" hole spacing. All alternators have 2" thick mounting bosses where the bolts go through, and the distance from the front mounting face of the bosses to the belt centerline on the pulley are all the same. So, you would think that, except for Corvette, they all interchange. The differences lie in the castings. Some have little bumps here and there, some have raised ribs, etc that may interfere. And the electrical connections are clocked in various positions.

My guess is that the truck alternator will bolt up successfully to the GTO bracket, unless it's a high amp model, like 140 amps. Then the housing may hit somewhere.

However, like was noted above, the GTO bracket will place the alternator about 3/4" too far forward of the Corvette crank pulley.

Ken

onefastrx7turbo

iTrader: (5)

Ah. Awesome information guys! So, If I want to use the GTO placement of the alternator, I have to use all GTO stuff; alt, brackets and harmonic balancer. If I wanted to use all corvette accessories and harmonic balancer, Im stuck with the high mount alternator then?

motorhead0922

I would say you are. The only low-mount, close fit alternator bracket is the L76, and you would have belt routing issues since you are not using PS.

onefastrx7turbo

iTrader: (5)

Is there a low mount, F body style alternator mount or just the gto style?

FadedFD

iTrader: (5)

Another mix/match question...

What about the AC compressor and its pulley? I have a vette one. Will it work with GTO accessories? They look identical I think.

bmxmon

iTrader: (5)

Does the AC stuff, waterpump and crank pulley differ between vettes? Im slightly confused on the list for the G8-GT, as it has LS2 vette listed as several of them, though I cant find LS2 vette Part numbers, only C5 Vette part numbers. Do they interchange? Im trying to make a PDF of all the parts, their numbers and their prices. (Prices from gmpartsdirect.com) Any help would be sweet thanks!
Also, will these serpentine systems work on any LS based block, as in 4.3L's on up? Can you use these systems on either 24x or 54x engines? I guess I dont see why not, unless the balancer is different between the two. Thanks again.

HSV-GTS-300

89018052
Water Pump
• For LS2, LS3 and LS7 Corvette engines

[CORVETTE]
19155067 NEW
Serpentine Accessory Drive System, with Air Conditioning
• Fits LS2 and LS7 engines
• Deluxe kit included all the components and hardware necessary
to install on an engine with air conditioning, including alternator,
power steering pump and idler bracket, (belt included)
The system includes:
12579229 Belt (water pump, alternator, and power steering)
12585476 Belt (A/C compressor, LS7)
12569301 Tensioner Assembly
12595289 A/C Belt Tensioner Assembly
12568996 Idler Pulley
88958093 A/C Compressor
12569286 A/C Compressor Bracket
15261472 Power Steering Pump (reman)
26046502 Power Steering Reservoir
12578067 Alternator and Power Steering Pump Bracket
12555693 Power Steering Pump Brace
12568997 Power Steering Pump Pulley
15841234 Alternator
12579228 Belt (A/C compressor, LS2)

12560115 Corvette Balancer (LS1 and LS2)

bmxmon

iTrader: (5)

Awesome thanks! I'll attach the .pdf's I made up, hopefully they'll help people. Note that not in all of them do they have everything, like bolts and whatnot. All this came from off the board, some if somebody doesnt like me using their picture please let me know. Also, if somebody would like to add part/part numbers to the lists (Really just missing the bolts I believe) let me know and I can update them. I'll keep going making others for the vette and F-body. Anyway my main goal was just to organize the PN's, prices and a picture of the setup. Hope it helps.

onefastrx7turbo

iTrader: (5)

Thats awesome! Saved.....

montyafteryou

iTrader: (3)

now with the 2005 gto ls2 motor can you swap the alternator bracket with the vette one to use a drivers side high mount alternator?

HSV-GTS-300

You could if you could get the belt alignment correct.

Vette belts run 3/4" in closer to the block than GTO.
To achieve this the bracket "offsets" or mounting points on the alternator casings must be different between the 2 models.

If the 3/4" difference is in the brackets, you're out of luck.

motorhead0922

The Corvette alternator/PS bracket will put the alternator too close to the block and will not line up with the GTO crank pulley and water pump. Also the GTO alternator will not fit in the Corvette casting because the hole spacing is different.

montyafteryou

iTrader: (3)

alright well with my gto setup and stock alternator bracket can i use the fbody ls1 alternator will that fir i hear that it is smaller then the gto alternator?

HSV-GTS-300

GTO & Fbody have the same belt spacing away from the block. So if the Fbody alt will bolt to the GTO bracket (with holes all in the right place etc) you should be OK.