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View Full Version : The Big N20 Cam?


Divine02
02-11-2009, 05:40 PM
Guys I'm thinking about going back to a nitrous system on my car. I've built an all forged 383 running 9:1 compression with trickflow heads with springs good to 600 lift. I have a ported intake and a 58mm throttle body. I would be changing injectors and cam. The engine is currently built to run forced induction. My question is whats a good size cam that will make good horsepower with a 250 horse shot?
jakesz28
02-11-2009, 08:59 PM
With a shot that small you can get away with a N/A cam. I would say something with a tight lobe seperation angle and as much lift as you can get. The duration will be around 240* to 250* in order to keep the rpms down.
KissMyWhtSS
02-11-2009, 09:06 PM
CC306 likes juice if your looking for a off the mill cam. I'd recommend talking to a good cam company such as AI or LE and get a custom grind for your setup though.
Twisted Z
02-12-2009, 01:09 PM
I would do some thing to get the DCR where it needs to be while I was at it. 9.0 is on the low side for a LTx for sure
Divine02
02-12-2009, 05:00 PM
Whats a big shot? How high would you guys go?
96lt1m6
02-12-2009, 06:24 PM
Whats a big shot? How high would you guys go?
how big of a shot will depend on your "ring end gap"
you should be safe up to 200.....if it were my set up i would sell the large chamber heads that are on there now and get a set of WORKED Lt1s to get the compression back up there since nitrous and compression go hand and hand...but that's just me. at this stage a N20 cam would possibly hurt you more than help.

what gear ratio are you runnin?
what type of fuel delivery?
Divine02
02-14-2009, 09:59 AM
Well after thinking about it some more I'm just going to keep my engine built for forced induction. Thats what I built it for. I guess if I was going to run a lot of nitrous that I would be better off building another seperate engine.
Z28pr0jekt
02-14-2009, 10:12 AM
Well after thinking about it some more I'm just going to keep my engine built for forced induction. Thats what I built it for. I guess if I was going to run a lot of nitrous that I would be better off building another seperate engine.
;) exactly. Keep the money for the blower/turbo that way you can get it sooner than if you bought parts to do the nitrous system
Twisted Z
02-14-2009, 10:41 AM
Well after thinking about it some more I'm just going to keep my engine built for forced induction. Thats what I built it for. I guess if I was going to run a lot of nitrous that I would be better off building another seperate engine.


If you are interested I have a set of New Turbo's for sale ;)
Divine02
02-14-2009, 10:50 AM
If you are interested I have a set of New Turbo's for sale ;)Installing a turbo is my goal. I just don't know when i'm going to have time to do it. But if a ran across a really good deal on a turbo or turbos I would be interested. I've really cleaned out the engine bay leaving me with a lot of empty space. I'm also looking for a set of exhaust manifolds or headers to attach the turbos to.
Divine02
02-14-2009, 10:51 AM
;) exactly. Keep the money for the blower/turbo that way you can get it sooner than if you bought parts to do the nitrous systemYou are absolutely right. I just wish I could get the car back together this year with a turbo. I've moved 5 hours away from my garage because of a job that I regret taking. It doesn't leave me with a lot of time to work on my car.