What do you mean by where i want to be i know my kpa was in the 80 needs more near 100 and i just don’t know witch one is good for me ik that stock intake is restricting me a noticeable amount i just think if i can get it to breath a lot better it will help a lot
What I mean is are you planning on porting your heads? Are you going to boost the car?
If no port the stock ls6 or LS2 manifold. Peak speed has a great service and pricing, and you will not notice the difference between a fast 92 or 102 and a ported stock manifold with unported heads. I have ran all of the above on my setup and I can confirm that.
If yes you do intend to port your heads, or you plan on stroking or installing a larger CI motor later on down the road, go with a fast 92 or 102.
You haven't stated if you are ls6 or LS2.
Fast 92 is basically plug and play with an LS6 and requires a spacer kit for LS2 fuel rails. I ran mine with the spacer kit and stock injectors and later on with STS v injectors which are ls6 length.
I prefer my fast 102 over the 92 with my setup. I have a cam, ported heads, injectors, cai, and long tubes with high flow cats. I am using a stock LS2 throttle body.
There are other choices such as the MSD airforce, BTR has a manifold also. Those are for more specialized setups and boost and not particularly good for lower cubic inch motors.
So figure out what direction you want to go, and buy the appropriate one.
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And a DIY will follow.
I'll update when I get ready to install it, and it's back from the paint shop.
It's a better manifold, to replace my aging 92.
Picked up from Excess Horsepower for a decent deal delivered all the way to Abu Dhabi.