HOW TO DO AN ADVANCED SEARCH.

Mon Jul 08, 2013 3:56 pm by Admin


For the benefit of 944Hybrids users there are two search functions available for you to use.
The purpose of this sticky is to explain the "Advanced Search" function because it is much more powerful and is the best choice when researching information.

When you log on to the site a list of options is shown in a line at the top of the page. One option is labelled "Search", use this option (NOT the search box lower down on the right).

After you click on the upper search option, a drop down box appears. At the bottom of this box is a radio button marked "Advanced …

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Another New Member...LS3 DREAM

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Another New Member...LS3 DREAM

Post  mc05duck on Sat May 31, 2014 7:17 pm

Hi Everyone,

I'm brand new and am in the beginning of my research for an LS3 V8 Swap for my 1986 951 (currently has 95k miles on it and needs a clutch job, brake restoration, and power steering restoration).  I want to avoid the clutch job and power steering money out and just do the brakes because from what I've heard, the 951 brakes will suffice.  I'm planning on doing this in the next year or two, but wanted to ask for some tips on what kind of LS3 V8 to look for that will work with my platform best.  I'm a real NEWBIE, so any info, any info at all is useful.  

My goal is to get 430 RWHP with the LS3 V8 Aluminum Block, possibly 500 RWHP.

Here are my questions:

1.  Besides the basic swap kit that some vendors provide, high level, what do I need or should I consider?

2.  Will I have to have a custom clutch installed?

3.  Will my current 951 Transmission work with the LS3 V8 swap?

4.  What specific LS3 V8 model type of engine am I shopping for (literally, the model number)?  All I can seem to find online are the automatic transmission versions.

5.  Pros and Cons of buying new vs. used LS3 V8?  

6.  Where can I shop for used LS3 V8's besides Ebay...?

7.  What's a fair price to pay for labor to have the complete swap installed?

8.  What links or articles should I be reading to enhance my knowledge of this swap?

9. I assume I'll need a new exhaust system, what options are out there?

Many thanks, that's a ton of questions and I appreciate all of your feed back in advance and probably will profoundly thank each of you that responds as well.   Very Happy
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Re: Another New Member...LS3 DREAM

Post  mc05duck on Sun Jun 01, 2014 4:26 pm

Active community.
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Re: Another New Member...LS3 DREAM

Post  thom on Sun Jun 01, 2014 4:59 pm

" />mc05duck, Most of your questions can be answered using the search function, but I will try to answer some to the best of my ability. Texas Performance Concepts (admin) is by far the best source for the conversion parts. I did a conversion on Milkman's 951 with a crate ls3 hot cam engine. Factory warranty. One of the biggest problems you find is a different intake with fuel line location and drive by wire throttle. You will need to remove the old gas pedal assy and fabricate a mount for the DBW pedal. The computer and wiring are almost stand alone that makes the project somewhat easier though. We used Eric's larger diameter headers and a 3 1/2 inch exhaust out the back. All custom made and welded. Unless you really need that much power I would go with the ls1 setup. Much cheaper and straight forward install. Don't get me wrong, the power is unbelievable but not really needed. If I do another one it will be an ls1. We also removed the power steering and power brakes. Fabricated a pedal box to install Tilton pedals and dual master setup for brakes with Big Reds up front and stock 951 calipers in the rear. Also installed a manual brake bias for front to rear. We also welded in a full cage to stiffen up the car, none sunroof factory car. So far the 951 trans is holding up, but without the LSD it will light the tires at will. That's with 295's in the rear. Do a search for Milkmans photos to see the car. Hope this helps. Thom


Last edited by thom on Sun Jun 01, 2014 5:35 pm; edited 1 time in total (Reason for editing : add photo)
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Re: Another New Member...LS3 DREAM

Post  thom on Sun Jun 01, 2014 5:41 pm

[img][/img]" />
pedal box with brake bias
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Re: Another New Member...LS3 DREAM

Post  mc05duck on Mon Jun 02, 2014 2:39 pm

 Very Happy Thom, thank you, I appreciate your insight.  Is a Crate LS3 Hot Cam V8 the actual model name of the engine?  If so, that's what I'll search for.  What's the difference between Texas Performance Concepts V8 Swap Kit vs. the Renegade Hybrid Swap Kit?  Maybe they have a solution for some of those problems you mentioned?  

It is good to hear that the stock clutch and braking system are used with this Swap, but it sounds like a beefier front braking system and bigger wheels are in store as well.

And...Oh Yes, the 500 HP is the goal...  Very Happy 
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Re: Another New Member...LS3 DREAM

Post  haroldk on Mon Jun 02, 2014 7:43 pm

Here you go. $16,500 plus electronics.

As for the question about the stock clutch: are you asking if you use the clutch out of the vehicle the engine is from or the stock clutch setup from the 944? What are your concerns with a "custom clutch setup" when you're putting in a completely different engine?
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Re: Another New Member...LS3 DREAM

Post  mc05duck on Tue Jun 03, 2014 10:12 am

haroldk wrote:$16,500 plus electronics.

As for the question about the stock clutch: are you asking if you use the clutch out of the vehicle the engine is from or the stock clutch setup from the 944? What are your concerns with a "custom clutch setup" when you're putting in a completely different engine?

Thanks!  That's probably about right on the cost to swap.

My question on the clutch is:

Is the stock 944 Turbo Clutch, the Clutch that is used with the new V8 Engine?
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Re: Another New Member...LS3 DREAM

Post  haroldk on Tue Jun 03, 2014 10:29 am

mc05duck wrote:

Thanks!  That's probably about right on the cost to swap.

My question on the clutch is:

Is the stock 944 Turbo Clutch, the Clutch that is used with the new V8 Engine?

The price I listed is just for the crate engine without a control computer, not for a complete swap.

The stock 944 clutch goes in the trash or up for sale. You'll need a much better clutch to hold 500 HP and it would take a lot of custom work to make the 944 clutch work with an LS anyway. If you're putting in a V8, putting in a different clutch is going to be one of the easier things you've got to do.

Read up on some of the build threads to get an idea of what's involved. It's not like replacing the engine with another of the same type.
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Re: Another New Member...LS3 DREAM

Post  mc05duck on Tue Jun 03, 2014 11:30 am

haroldk wrote:
mc05duck wrote:

Thanks!  That's probably about right on the cost to swap.

My question on the clutch is:

Is the stock 944 Turbo Clutch, the Clutch that is used with the new V8 Engine?

The price I listed is just for the crate engine without a control computer, not for a complete swap.

The stock 944 clutch goes in the trash or up for sale. You'll need a much better clutch to hold 500 HP and it would take a lot of custom work to make the 944 clutch work with an LS anyway. If you're putting in a V8, putting in a different clutch is going to be one of the easier things you've got to do.

Read up on some of the build threads to get an idea of what's involved. It's not like replacing the engine with another of the same type.

Ah, this makes sense! Many, many thanks. It helps my pocket book because that means I don't have to replace my current clutch, just have to baby it along until the conversion.

I want to use the LS3 Hot Cam engine, which retails around $8k, instead of the LS7 you linked up to me. I just need the specific model number for it that is for a manual transmission intead of automatic. I'll be searching the builds and the site you provided.
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Re: Another New Member...LS3 DREAM

Post  haroldk on Tue Jun 03, 2014 1:55 pm

Unless Chevy did something stupid, all you need to do to turn an engine set up for an auto into an engine set up for a manual is unbolt the flex plate and bolt on a flywheel and put a pilot bearing in the crank.
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Re: Another New Member...LS3 DREAM

Post  mc05duck on Tue Jun 03, 2014 2:35 pm

 Shocked I can see now... I can see!!!  Cool 

That's why the conversion swap kits come with a pilot bearing and charge your for a GM 12" Flywheel.

Learning...  Idea 
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LS3

Post  kevin924kevin on Tue Jun 03, 2014 4:34 pm

Hi, i am doing the LS3 swap into my 924. You can buy a crate engine for under 10k complete. I bought one with 20 miles on it.A stock LS3 is 430 HP, the next one with the GM hot cam is 480 HP from there u can do the stage two GM cam at 525 HP. The stock lS3 430 HP with a good tune, can reach between 486 and 493 HP, I started with the 430 HP have added the hot GM cam, a Fast 102 intake and fuel rails, with the right headers you can add HP. The key to the LS engines is tuning and make them BREATH. When i dyno my mill i figure with the few other toys added i should acheive over 550 HP at the engine. The size of the LS engine platform does not change, its all bore and stroke to make the dispalcement. The LS7 and LS9 use the LS3 6.2L block.  The nice thing about the LS3 heads are they move a huge amount of air, you can spend money to buy fancy pants heads, (1800.00) but they only move a bit more air. These heads are perfect from the factory, no porting or polishing needed, unless you want fancy pants heads. you can add more HP by changing rockers ( about 17 HP) I will be running the LS7 clutch mated to my Z06 6 speed vette box. reality, its all about what you want, and what you are prepaired to spend. I will have about 10K plus or minus into my motor when she comes of the dyno, and for me its worth every penny. These motors 3 through 9 are big blocks in a small block shell. There is no replacement for displacement. More cubic inch is always nice. Throw a turbo and i mean a small one on a stok 3 and you can pull over 600HP all day long. There are a lot of great articals about these engines and what to do and not to do.Good luck and keep us posted.
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Re: Another New Member...LS3 DREAM

Post  mc05duck on Sat Jun 14, 2014 2:52 pm

I called Renegade Hybrids and they told me that they charge about 50-60 hours for a complete LS3 conversion and it would probably be Mid to Low $20's all in with the LS3 Hot Cam 480 engine, conversion parts, and labor. They also told me that I could probably do it cheaper with a local mechanic that was both talented and committed to seeing the conversion all the way through.

My question is:

Wouldn't it be cheaper if I just bought a completely converted 944 Turbo with the LS3 engine? As of right now, I'm already $12k into my car, it needs restored brakes, clutch, and CV joints, and then $20-25k for the conversion. This could end up being a $40k car by the end of all this.

How hard is it to find LS3 conversions already track ready that are done right and what are they going for? I'm guessing $25-30k... for a complete car.

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Re: Another New Member...LS3 DREAM

Post  Sterling Doc on Tue Jun 17, 2014 9:37 pm

Buy this car: http://944hybrids.forumotion.com/t2515-selling-116

Port the heads, and put a good cam in it. You will save yourself $10K + in build costs, and a lot of time and headaches. Plus you will still have your old car to sell.

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