LS engine swap info

bitterfitter wrote:So after a few years of hearing how everyone is going to the LS engines, I decided to start building one for my car. I am looking for info from guys who have done this as far as the correct motor mounts to use to get the engine where it works best. Or what headers or manifolds work with our cars. Or which oil pan clears the cross member. Or any other items that can be issues on our 73-77 Chevelles.
I have been running my Camaro at the local track and I think I need more in my Chevelle than the 430 hp I have in there now. The Camaro goes good but I want the Chevelle to really move. I am looking for the best I can get before I have to rub the car. Any ideas how far I should take this engine?  500hp, 600hp, 700+hp.....

bitterfitter wrote:That's a good deal also.
I have the L33 in my truck and was hoping it would die so I could transplant it into my car. Damn thing keeps running though... 236k and more daily

bitterfitter wrote:So I am thinking about using a late model Impala / caprice fuel tank that has the fuel pump in it for my LS engine. Will this work or do I need to change the pump to something different?  

bitterfitter wrote:Great to know Wallyuph. What did you do for engine wiring?  Did you alter an original harness?

Wallyuph wrote:Ok Here is what I know fits or works and what I ended up with for the final install and it working well.

1) Oil pan The Holley 302-1 http://www.summitracing.com/parts/HLY-302-1 It fits nice and does not hang below the cross member.
The Ctsv pan would not go back to rear of cross member far enough as engine would hit fire wall and it hung down more.
Here is spec sheet link for oil pans. http://www.improvedracing.com/tech/LS-oil-pan-dimensions.php
I used the Summit racing Chevrolet Performance 19212593 - Chevrolet Performance
Muscle car Oil Pan Kits NAL-19212593 on the Laguna and it fit fine but hangs down below the cross member by a 1” plus

2) Headers I used Holley Hooker LS Cast Iron Exhaust Manifolds 8501-3HKR
http://www.summitracing.com/parts/hok-8501-3hkr
They fit like stock exhaust manifolds Then ran 2&1/2" exhaust all the way out to back. That's the minimum size pipe recommended

3) Dirty dingo slider engine mounts. Dingo Slider SBC or BBC to LS Conversion Engine Mounts http://dirtydingo.com/store/index.php?cPath=1_354_322

4) Front drive accessories Holley LS Engine Swap Accessory Drive Systems 20-138 http://www.summitracing.com/parts/hly-20-138 Front drive accessories Holley LS Engine Swap Accessory Drive Systems 20-138 http://www.summitracing.com/parts/hly-20-138 and spacer braket Holley LS Engine Accessory Drive Application-Specific Installation Kits 21-1
and don’t for get to buy the power steer pump reservoir Holley LS Engine Power Steering Reservoir Kits 198-200 http://www.summitracing.com/parts/hly-198-200/overview/

5) Fuel pump I used Aeromotive Phantom 340 Stealth Fuel Systems 18688 http://www.summitracing.com/parts/aei-18688
Here is the pluming diagram http://aeromotiveinc.com/wp-content/uploads/2013/03/Phantom-Stealth-Plumbing-Diagram.pdf I used #6 braided line from pump to engine bay and back and AN fittings

6) For your AC system you can use your stock set up you will just need to get two new hoses made for the ends that come off the compressor from Holley kit to you hook ups. And hydraulic hose making place will make them up for us if you have the fittings. I tucked up a Vintage Gen II AC system in mine and it will fit in behind the stock dash but that’s a lot of work if your system is good you can just swap out the hoses and you should be good to go.

7) I did not have to do any cutting but the drive shaft needs to be shortened and I measured it and took it in to have it shortened and balanced with two new u joints. The rear trans cross member only had to drill two new holes and it lined up with one set already in the Frame for me.

I used dual cooling fans Brushless 12” by spal with a variable temp sender that required me to drill and tap my water pump. They are new to the market and are not listed any where yet Pricy but nice. A set of dual electric fans should work fine for you.

9) Air filter we used Airraid 4” kit but was told by dealer NOT TO USE OIL type air filter as it gum’s up mass air flow sensor and Air raid make a non oil filter it’s called SynthaMax http://www.airaid.com/ProductDetail.aspx?ProductID=100-400

alowerlevel wrote:Truck intake fit on mine just fine http://www.g3gm.com/t8620-my-73-chevelle-the-outsider-4-8-ls-swap  I used fbody exhaust manifolds on it too.
But yes to swap to a car intake you will need to use the car injectors and change the plugs on the harness to match, and other than looking better the car intake offers no performance boost over the truck intakes, actually Ive seen the truck intakes pick up power over a ls1 intake.
I re-did my engine harness myself using the info on www.lt1swap.com it wasnt as hard to do as I thought it would be and it only cost me about $35.