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Z28 To SS Conversion

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Old Oct 26, 2007 | 05:24 AM
  #1  
E-Dub's Avatar
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Z28 To SS Conversion

Engine Only....I Just Want An SS Engine...How Much Would It Quench My Budget And Also How Long Would It Take To Have It Back ON The Road....I Have A 98 Z28 A4.....I LOVE MY CAR THE WAY IT IS....But I Want To Go Faster So I Want A SS Engine But I Still Wanna Keep My Z28 Emblems And All Dat Other Z28 Brand Stuff...Thanks Alot To Anyone Who Can REALLY Help Me OUt
Old Oct 26, 2007 | 06:12 AM
  #2  
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They have the same engine. No difference at all.

The differences in hp ratings are due to catback on the early models and catback + lid on later ones.
So get a good catback and a lid and you're there.
Old Oct 26, 2007 | 09:14 AM
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but the SS badges add so much power....why leave that on the table??



as stated....you already have the "SS engine"....for that matter you even have the corvette engine.
Old Oct 26, 2007 | 09:20 AM
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Yup- same head, same cam, same intake- You could get the LS6 intake without EGR, but not a super big deal. The SS probably had the SLP exhaust and Cold Air Intake- but you would do those mods to almost any F-body anyway-
Old Oct 26, 2007 | 09:42 AM
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The only difference between your '98 Z28 and the latest ('02) SS is that you have the original "LS1" intake manifold, and the first "LS1" camshaft. Those couple items, as well as the exhaust manifolds were updated by '01 (which used the LS6 intake, a different profile camshaft, and new, better flowing manifolds).

You could do those upgrades if you want. You could also bolt on a set of LT headers and get upwards of ~25 - 30 HP more (close to ~20 at the rear wheels).

There are dozens of different head/cam combos available as well. The sky is the limit in terms of power, and will leave any stock "SS" eating dust .
Old Oct 26, 2007 | 12:42 PM
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There is NO difference in between the engine in your 98 Z28 and the engine in a 98 SS Camaro. The higher rating in the SS came from a cat back exhaust SLP installed.

Start moding your car, you'll get more power.

Re'
Old Oct 26, 2007 | 08:17 PM
  #7  
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I agree.

There's no difference between the SS and Z28 motor -- 346ci LS1.



Wake your car up with some bolt-ons... Longtube headers, Y-pipe, LID, catback, etc.
Old Oct 26, 2007 | 11:38 PM
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yup...what i heard...LS6 manifolds on the new maro's and functional hoods make it go 15 HP up, which would be easily capable with full exhaust..probably more actually.
Old Oct 26, 2007 | 11:51 PM
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Originally Posted by Camaro9123
yup...what i heard...LS6 manifolds on the new maro's and functional hoods make it go 15 HP up, which would be easily capable with full exhaust..probably more actually.
The SS and Z28 had the same intake manifold when comparing the same year Z28 to the same year SS. Also, if you've ever looked at an LS1 lid then looked at the path the SS hood makes to the lid, I would hardly call it "Ram Air".

The SS's 15 horsepower was always a number that was on paper. It was used to make the SS guys fell like they were getting more power for their money, the same way the F-Body LS1 was underrated to make the C5 guys think they were getting more power for their money. At best, I would guess a non-SLP SS made 5 more horspower than a similar year Z28.
Old Oct 27, 2007 | 12:17 AM
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yea it's most likely mostly looks on the SS's, yet people make them out to be so much faster, in actuality, almost 90 percent of the people i've talked to think that a z28 has a ls1 and a SS has a LS2 :sigh:
oh well...
I have heard MANY times that they under rated the Z28's on paper so that the corvette guys would think they were way faster.ha..bust their bubble..
Old Oct 27, 2007 | 10:54 AM
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On an A4 the gearing can be different. On Z's the 3.23's were an option where they were standard issue on SS's. If you have 2.73's start with that swap and a loose converter. You'll be very pleased with that alone. I'll warn you though, it won't stop there.....

On the badges, get some old school Z/28 badges. IMO that small mod makes a nice difference on the Z's.
Old Oct 27, 2007 | 11:44 AM
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Originally Posted by Greed4Speed
On an A4 the gearing can be different. On Z's the 3.23's were an option where they were standard issue on SS's. If you have 2.73's start with that swap and a loose converter. You'll be very pleased with that alone. I'll warn you though, it won't stop there.....

.
That's what I did.
Old Oct 27, 2007 | 08:13 PM
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Woke the car up didn't it?
Old Oct 27, 2007 | 08:29 PM
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Originally Posted by Kris93/95Z28
I would guess a non-SLP SS made 5 more horspower than a similar year Z28.
SLP built ALL the SS and Firehawk F bodies

The HP bump in those cars was due to the cat back system installed by SLP. The SS Ram Air hood did little to nothing for power.

Re'
Old Oct 27, 2007 | 11:14 PM
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Originally Posted by Greed4Speed
Woke the car up didn't it?
You know it. I couldn't stop grinning for days.



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