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From: Grew up in Manhattan Kansas, live in Saint Louis
Help with parts selection
I just finished putting my long block together last weekend, now I’m looking for some advice on intake/spark/fuel/nitrous. I have not bought any parts outside of the long block. The engine is as follows:
lq4 stroked to 403ci (forged crank, rods, pistons)
236/244 cam
Trick flow cathedral heads
11.3-11.4:1 CR
lifters/springs/pushrods/rocker arm trunnion upgrade
i think the engine will peak @ ~6800rpm - so I will need to spin to 7k but I will not let it go over 7500.
Havent yet bought but plan on:
3500-4000k torque converter, 4.56 gears, 25-37 inch tires. This is a mud truck that I’m trying to skim the top, rather than dig to the bottom.
I think I want to run 2 stages of 150. I only plan to compete a couple of times per year, and I don’t really want a 300 shot on the street. My plan would be to simply not use the second stage outside of competition. Alternatively I could change jets/tune the couple times of year I want to race. I thought the 2 stages might be easier in the long run. From everything I’ve read here at ls1tech I think I need a direct port setup to spray 300. I plan to use a standalone fuel setup with Race fuel.
1) is there a better way to accomplish what I want to do with the nitrous?
2) spark plugs. I understand I need colder plugs. I haven’t figured out how much colder. One thing I question is if I go cold enough for a 300 shot, won’t I be too cold for n/a driving? I wouldn’t be opposed to changing for the Big shot if needed. Build my understanding of how that works.
Rather than just give you an outdated parts list that I have, I would suggest giving the guys at nitrous outlet a call as they can hook you up with exactly what you are needing.
For the fuel setup, racetronix or ws6store has what you need.
From: Grew up in Manhattan Kansas, live in Saint Louis
Thank you both for the responses. I did exactly what you said and had called NX a couple weeks ago. They answered my questions for the most part. I went ahead and got a Fast Lsxrt intake. I think I am going to get it running and in the truck N/A before I go to the nitrous. That way I get to drive it for a little bit before I blow it up if/when something goes wrong
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Help with parts selection 
