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Thinking of spring

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Old Apr 5, 2016 | 03:00 PM
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Default Thinking of spring

Bought my car about 8 months ago and swore to myself I was going to keep it stock. I spent way too many nights researching mods and way too many weekends on my back in the garage under my old Mustang Cobra and didn't want to do down that path again.

Well, I'm sure you see where this is going. Now that I'm actually going to be able to get it out of the garage any week now, I'm thinking about just a little more power. Don't need to go crazy, I would be happy with 425-450 whp. I know those numbers are doable N/A, and I've seen all kinds of combos that would do it, but I need it to be very streetable and (more importantly), smogable. (Outside of Cali, Colorado has some of the toughest emissions.)

Right now, it just has Halltech intake, Dynatech headers and ?? catback (pretty sure it's not the Ti, just haven't gotten a chance to take a look-see at it yet).

Thoughts on a combo? How about local (or well-known non-local) engine builders for this?
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Old Apr 5, 2016 | 03:09 PM
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What year is it? Manual or auto?
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Old Apr 5, 2016 | 07:43 PM
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Supercharger would get you there and a little more, but don't know what your budget is.
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Old Apr 5, 2016 | 07:51 PM
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Nice, Im in the same boat and have the same power goal, bought mine last May, and swore Id keep it stock...ya right! (did intake and longtubes, and suspension) From all the research I did 243 heads(if you have ls1) and a cam like the BTR stg 2 range should get into that whp range with long tubes, my biggest reservation is the clutch, I know I will kill it(broke 2 clutches in my 370z, Im borderline abusive, or so I am told), gonna wait till I find a trustworthy shop to do the clutch before I get into any more engine mods.

Last edited by Joepro95; Apr 5, 2016 at 07:51 PM.
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Old Apr 6, 2016 | 11:49 PM
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Sorry, 04 Z06.
And I'm only thinking N/A.
Budget is not "price is no object", but I'm not going to quibble over $$ for a good combo either.
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Old Apr 7, 2016 | 02:27 PM
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Originally Posted by Rocketguy
Sorry, 04 Z06.
And I'm only thinking N/A.
Budget is not "price is no object", but I'm not going to quibble over $$ for a good combo either.
Going to have to do a cam to get 420+rwhp. I don't know how much that would affect your emissions in Cali.
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Old Apr 7, 2016 | 11:50 PM
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Originally Posted by zdeckich
Going to have to do a cam to get 420+rwhp. I don't know how much that would affect your emissions in Cali.
You;re not going to get that hp with a NA car and stay emissions legal in cali. A supercharger my be an option. An then there's the drive train.....
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Old Apr 8, 2016 | 01:50 AM
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Originally Posted by zdeckich
Going to have to do a cam to get 420+rwhp. I don't know how much that would affect your emissions in Cali.
Isn't the OP in CO?
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Old Apr 9, 2016 | 12:35 AM
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Originally Posted by grantv
Isn't the OP in CO?
You're right. I missed this part. "(Outside of Cali, Colorado has some of the toughest emissions.)" Passing emissions tests with a 420rwhp NA motor would be hard and take some fancy tuning.
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Old Apr 10, 2016 | 06:30 PM
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Originally Posted by BigGun
You're right. I missed this part. "(Outside of Cali, Colorado has some of the toughest emissions.)" Passing emissions tests with a 420rwhp NA motor would be hard and take some fancy tuning.
Yeah, that was kinda my suspicion. Hypothetically speaking: would it be possible to do H/C/I and normal tune (for off-road use only, of course), then do a software-only swap (tune) if I decided to emission it? Anyone have any experience doing this?
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