Pre-cam mods: How's this?

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I have a 1998 Z28 with 80k miles on it and thanks to a fat insurance settlement it's going to have some new life breathed into it. I plan on running a real aggressive cam, along the lines of the magic stick or similar. My goal is 400+ rwhp. I am going to put on Pacesetter LT headers, lid and an LS6 intake. I have a cutout on my stock exhaust right now. Is it necessary to run an aftermarket catback exhaust if I'm running an open cutout? I've been told with boltons that an open cutout will flow enough, but I wasn't sure if it'd be enough with a cam like the magic stick. If I need a catback, should I just go with a catback system from a sponsor, or should I run a custom dual setup? Any other tips on what mods I should run before running a cam? If you can think of another cam option (this IS a daily driver) that will get me 400-430hp rwhp go ahead and list them as well.

*Please do not tell me to do suspension stuff first to get the power to the ground, I don't usually race it from a dead stop, it's usually a roll or more so I'm not worried about traction issues (yet). Thanks guys

[keliente]

Nothing will flow better than a cutout, think about it, there is no restriction. However a good exhaust like magnaflow/gmmg/borla wouldn't hinder it unnecessarily if you do decide you'd like a catback. Normally when we see cars go up on the dyno and open the cutouts, the gain is anywhere from 4-8hp.

You can get any kind of exhaust you like, it doesn't matter.

The mods you listed are a good warm-up for a cam. Lid, Headers, LS6 intake, cutout will get the air moving like it should be. When you decide on a cam don't forget springs, pushrods, timing chain, and all the good stuff like that. A tune will also help you maximize your gains.

[nhraformula]

cut outs get old after awhile. the drone is enough to drive a person nuts.

[mrr23]

Nothing will flow better than a cutout,

really?? that's a pretty definitive statement. guess i should've left mine on. a cutout is helpful, yes. but doesn't offer the scavenging that a complete, well designed exhaust system can offer?

in my particular instance, my car lost .1 in the 60ft and gained 1 mph at the 1/4. this netted me an overall gain of .02 in the 1/4 mile. and this was on 136 rwhp n2o. also, the cutout did gain me 11/13 on the dyno. unfortunately, the dyno doesn't show you the loss under 3000 rpms.

Now here's results of my exhaust endeavors. This is with 136 rwhp n2o. the stock vs cutout was same day.

distance --- stock --- cutout --- cutout colder --- Bassani
60ft ------ 1.987 ----- 2.074 ------- 2.020 --------1.969
1/8 ------- 7.902 ----- 7.912 ------- 7.990 ------- 7.739
mph ------ 93.20 ----- 93.97 ------- 92.16 ------- 98.60
1/4 ------ 12.102 ---- 12.080 ------ 12.191 ------ 11.814
mph ----- 117.12 ---- 118.06 ------ 118.20 ------ 121.35


NA times

distance --- stock --- cutout --- cutout colder --- Bassani
60ft ------- 2.033 ---- 2.073 ---------- 2.031----- 2.044
330ft ------ 5.788 ---- 5.822 ---------- 5.759 ----- 5.723
1/8 -------- 8.808 ---- 8.833 ---------- 8.729 ----- 8.656
mph ------- 82.33 ---- 82.55 ---------- 83.70 ----- 84.27
1000ft ---- 11.404 ---- blank --------- 11.278 ---- 11.196
1/4 ------- 13.606 --- 13.636 -------- 13.449 ----- 13.345
mph ------ 101.66 ---- 101.58 -------- 104.05 ---- 105.15

[mrr23]

cut outs get old after awhile. the drone is enough to drive a person nuts.

yes it does.

[mrr23]

You can get any kind of exhaust you like, it doesn't matter.

not trying to pick on you, but it does matter.

going from borla 3" adjustable to bassani tru-duals with x-pipe did this on the wife's car. both on stock tune as well.

[TARZAN]

I'd suggest gettin a muffler welded in the stock catback, at the very least....

-Will

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Thanks guys