Greetings from Los Angeles.

I followed the LS6 intake manifold instructions on LS1HOWTO.com, and also reviewed the SLP instructions also. The installation went very smoothly and if any one is considering DIY and you have some mechanical experience, I would encourage you to go for it.

Here are 2 tips that I used in addition to the instructions from LS1HOWTO.com that helped with removal / install:

1. Removal Tip: Especially helpful if you are solo on this project. Use 2 wire baggie ties & wrap them around the 2 rear manifold retention bolts. Twist the wire so that it holds the bolts UP out of the bolt holes in the engine. This will allow you to use both hands to maneuver the manifold forward and out of the engine.

1a. Install Tip. You have to "pre-place" the 2 rear manifold retention bolts into the manifold prior to seating it on the engine. Again, wrap the 2 wire ties around the bolts about 1/3 from the top of the bolt, so that the bolts are held up, riding in the manifold. Once you make the rear connections and seat the manifold, remove the ties and the rear bolts should easily drop down and you can start the threads on those bolts. As stated above, this is very helpful if you are doing the install solo.

2. When you are transferring your throttle body to the LS6 intake, clean the carbon off of the throttle plate and / or the throttle body. My car had 24,700 miles in it and there was a small amount of build up on the bore of the throttle body.

Addendum: Following the instructions from LS1HOWTO.com, disconnecting the fuel line was not required (although I had the removal tool on hand just in case.) Make sure have an INCH / POUND torque wrench for installation of throttle body to manifold, manifold to engine, etc.

SOTP Result: After checking connections and letting the engine idle to normal operating temps, checking for coolant leaks and any codes, (NONE showed) test drive the car before you blast off to your buddys to let them check out the mod.

I have an MN6 & 3.42 rear, a stock motor w/ all the usual bolt ons, including long tube headers, currently using a Twin Flow intake, relocated MAT sensor, GMS MAF, blah, blah, blah.

Result, is that I definitely noticed more torque coming on about 700 rpm lower in the range, driving normally in around-town driving. I decided to test this on the freeway too, and noticed that there was more available torque down low. I drove the car in 6th gear @ 75mph, and although the RPM did not change, there was a noticeable improvement in the torque at that RPM and the engine "liked" cruising in 6th at that speed alot better than before the install.

I will probably intall a ported throttle body to complete the intake system, then off to get a dyno-tune / LS1 Edit reprogram.

If you live in the Los Angeles area and want some help w/ this install or want a C5 owner to install it for you, e-mail me. I will also install aftermarket shifters, and have a couple good install tips on that job, which will help with sound and heat insolation.

#1 & #1a above will help with your intake removal / install project.

:chevy

 

Thank you for the insight. I wish you were near me - I would def take you up on the install help offer!!!! I am hoping to install mine this weekend. I guess from what you are telling me I don't need any special tools for removing the fuel rail...

 

Are there any gaskets involved in this swap (as in replacement of)?

 

I got the kit from SLP, $399 plus shipping. Everything that you need is in that kit. The "gaskets" are moulded into the intake. Also, if you get the SLP kit, in the instructions, Step # 14 refers to "gaskets" for the coolant block off plugs. The "gaskets" are actually small O rings that are already seated on the block off plugs. I called SLP prior to doing the install to verify that nothing was missing. They acknowledged that the "gaskets" that they refer to are in fact the O rings.

Follow the instructions from LS1HOWTO.com and use my 2 little install tips and it should be a smooth install.

:chevy

 

1 is a great tip, I'll use it the next time I have to remove the manifold.