Nitrous Camaro RWHP numbers?

[DIVINE]

Another guy and myself are working on a 95 Camaro. It does have a 383, stock 6 speed transmission, and stock 3.42 gears. The 383 has 11.1 compression, Ported trickflow heads and a ported Edelbrock intake. 58mm throttle body. AFR Hydrarev kit. OBX full length headers. 1.6 rockers and an off the shelf Comp Cam. 292xfi. We are going to run two shots of nitrous now. We are using the Nitrous Express shark nozzles. We are going to start the first shot at 150 from 4,000 rpm and start the next shot at 150 at 5,000 rpm. We are going to run this engine to 7,000 rpm just to see what it will do. We will be running both shots together to make 300 horse with a nitrous controller. We will be running an MSD ignition, coil, and wires. Any guess on horsepower before we shove it over the rollers?

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[Eagle]

Id have the first stage come in earlier, but that is just me.

I'll guess 595WHP on both stages.

 

[Eagle]

And that is assuming around 1000psi in your bottle(s), -6 feed to the engine bay.

 

[DIVINE]

Id have the first stage come in earlier, but that is just me.

I'll guess 595WHP on both stages.

I use to have mine come on a 3,000 but this isn't my car so I'm not gonna push the matter.

 

[Eagle]

fair enough

 

[DIVINE]

Just to give you guys some more info. Here is the car the first time we had it on the dyno running a 150 shot with just a LT4 hotcam. It made 394 horse without Nitrous at 6400 rpm. 517 horse with nitrous at 5800 rpm
http://www.youtube.com/watch?v=CcQlTuQQCWM

 

[Eagle]

Could be interesting! Maybe 650?

 

[DIVINE]

650 was my goal. I put this engine together hoping for 430 at the wheels without nitrous. I don't know how much the bigger cam, rev kit, and headers are going to help but time will tell.

 

[Eagle]

What rods/pistons/rings does it have? Were the rings gapped for a 300 shot?

 

[DIVINE]

Eagle H beam rods. Forged speed pro pistons. I don't remember which ones cause the guy already had them. I wanted to run hellfire rings like I did in my Trans Am but the owner bought gapless rings. So I gapped the tops at .036 and the second rings at .034. I know I know what everybody is gonna tell me. The gaps should have been the other way around. You always want your second ring end gap to be bigger than the top but this is the way the manufacturer recommended it.

 

[Eagle]

weird. seems a bit tight for 300HP, but i'm sure it'll be ok.

 

[DIVINE]

Well heres the other thing. We are just gonna run this 300 one time on the dyno and then were gonna swap the jets out and just run 200. Where i'm from theres not a lot of cars runnin more than 400 horse so why push the motor when you don't have too. But just out of curiousity, what would you have gapped them at for a 300 shot. I'm a forced induction guy so I don't do a lot of work on nitrous.

 

[Eagle]

Every ring mfg has different suggestions... but I seem to recall the last set I gapped were a tad bit further.

For example,

http://www.wiseco.com/PDFs/Manuals/RingEndGap.pdf

Nitrous always seems to have the largest suggested gap too for some reason.

 

[Eagle]

You're VERY close though, we're talking thousandths here. That gap being smaller on the 2nd might give you upper RPM issues... but you said 7k. Might just be fine.

Who knows. You'll find out when you get it on the dyno!

 

[KAR]

632rwhp is my guess with both kits.
And 462rwhp on motor.

 

[JDHedman]

660rwhp

 

[10sec]

11:1 compression+spray is going to be tits. IN for HUGE tq numbers.

 

[DIVINE]

Got the car started Saturday afternoon. Put coolant in it and have been trying to run it. It's having a hard time running. Gonna try putting some new gas in it.