FAST LSXr 102mm Intake Manifold for LS1, LS2, and LS6 (146302B), black

I used to have one of these intake manifolds on my LS1. Years ago I started the process of turbocharging my car and I must have bumped my head on something because I sold it and bought a Holley intake. While Holley does make a nice intake I missed the Fast intake as I felt it was more appropriate for my build. The " best usable" RPM range of the Fast is around 2-7k rpm, exactly where my engine makes power best. It's lightweight, won't heatsoak, and its very well made. For a cathedral port LS engine I firmly believe that this is a solid upgrade. I'm running a 92mm throttle with a velocity ring (which unfortunately can be difficult to find nowadays), and 10lbs of boost. I made sure to follow the directions exactly when installing, boost leak tested it up to 20psi, and did not have a single leak. I'm very happy to have a Fast intake again, the car is running great and making some good power.

I got this for my 2006 Pontiac GTO. It's a good DIY upgrade and bolts right on. Only modification necessary is to drill a little hole for the MAF, otherwise it goes right in. I'd recommend getting new gaskets while you're in there. As soon as it was installed, I noticed my car pulled harder in 3rd and 4th gear. Definitely would recommend.

Very pleased with it makes my car run real well

Well going to have to change the water pump and figure out steam vents. There is 0 clearance under the intake belly I had to build brackets for the fuel rails to fit. I hope the picks give some insight. But nice piece other than that.

You can definitely tell a difference, it took me 2 weekend's to install with a bad back. I installed on a C6 corvette. Easy install, I just watched YouTube videos and not one problem. I would definitely spend the money on the FAST gaskets. Take pics of all your hose connections and should be breeze. I'm running stock air box, stock TB. X4 tune and mainfold together sings very well.

i am very disappointed with this manifold. first of all the fact that you have to drill holes for sensor mounting in a piece that cost almost a thousand dollars is just nuts. i replaced my stock ls2 manifold with this per comp cams website because they said it is REQUIRED with the xr281 cam i installed. so for fun i had the car tuned and dyno tested with the stock ls2 manifold still installed and it produced 397rwhp with my other supporting mods. i was pretty happy with these numbers but wanted just a touch more and hoped the lsxr would tip me over the 400 hp mark. so next off the only change i made was installing the fast lsxr 102 and i again had it re-tuned and dyno tested. i was expecting to see a small gain in hp and torque. much to my surprise the second time around on the dyno i lost horsepower at 394 compared to my previous 397 and my torque went down also.. i extremely disappointed with this highly overpriced and over-hyped chunk of plastic

Be prepared to spend some extra money on miscellaneous parts that dont come with it. Bought this after using a FAST 92 intake, which is very good. This is just better, and with a 102mm tb, the airflow is incredible. Picked up power all the way through the RPM range.

It came super early and the packaging was SUPERB. This will give you amazing gain, especially if you have other intake mods to go with it. The instructions are very instructional. One big tip is to make sure that you use the provided throttlebody bolts. The stock ones are too long and they will screw through the body of the intake and damage it.

Be wary about purchasing through this seller. Had a price error and everyone who ordered got the same "it was damaged in transport" email. Didn't give me the option to wait for another replacement and when the refund was issued they took the money out again. WATCH OUT !!!