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427 TT C5 or...

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Old Aug 29, 2001 | 06:16 PM
  #21  
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Default Re: 427 TT C5 or... (Godspeed)

JD 90 383,
Well, an LPE Viper would be awesome. But the Viper computer is not as advanced as the C5, so it will be a pretty brutal street car. I am sick. :yesnod: I probably don't know when to stop... Maybe when I spin the tires in 6th... :eek:
Yes, the reason why another TT C5 is so attractive because LPE is simple AWESOME. :yesnod:

Bleck,
I will definitely keep you posted... I drive slow, since mine is a slowC5. :p: Glad to give you a ride when the car is done... Handle will probably be AnotherSlowC5. :bb

Snowman,
I agree with you on the one and only one TT Viper viewpoint. I talked with Ron Sr. at SVSi, and he seems to be very knowledgable and confident about his product. But then, there is always a risk. But big risk could mean big reward (unless it's stupid risk).
I have had car w/ nitrous, supercharged car, big cam all motor car... Turbos got me totally convinced that it's the best for my intention. :yesnod:

NoMercy,
It's slow anyway. :p: Nothing to worry about... :D

EuG,
You know, power is very addicting... Before you know it, you will be looking for more power yourself. ;)
Yes, I am leaning towards a big-bore, short stroke C5R engine...

C5 Hardtop,
I am keeping my SlowC5 for sure. I need a daily driver, right? ;)

wsaracen,
More cylinders on the LS1-type of engine would definitely be awesome, but I don't think I can get that to fit nicely. :(

PHAT CHANCE,
I am definitely keeping my SlowC5 as my daily car... The Cobra replica is definitely awesome, but it too unstable for the amount of power that I am thinking...

Godspeed,
Thanks for sharing your knowledge... I would love to build a destroked, big bore C5R engine with lots of air flow from cooled turbocharged induction. It's a very fine line... I don't want the power curve to be too peaky... It's hard to have it all. :( It would be nice if I can get to 800 (at the wheels) with 91 octane pump gas. And 1000+ (at the wheels) with maybe 104 unleaded race gas. :yesnod:
I understand that ARE is awesome. But then, I already worked with LPE and had a great experience... So, I figure I will just go with LPE. I used to live in Toronto. If I am still there, I will be visiting ARE every week. :D

I really like the AH of the C5... It's a nice safety net... But to make such insane level of power, I am thinking Motec... Just so much to figure out. It's all fun though.

SlowC5 :D
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Old Aug 29, 2001 | 07:53 PM
  #22  
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Default Re: 427 TT C5 or... (SlowC5)

Mike, go for a TT ZR1. 1000RWHP with the right boost levels <G>, over 750 with mild boost ....

Just a thought... since I want someone else to pay for the fabrication first

sirhC (still looking for 500 N/A RWHP...)

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Old Aug 30, 2001 | 01:47 AM
  #23  
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Default Re: 427 TT C5 or... (ZROne)

Mike, go for a TT ZR1. 1000RWHP with the right boost levels <G>, over 750 with mild boost ....
I like this idea.. But how about a twin turbo LT-5 in a Z06? Stiffer and lighter car with all the possibilities of the DOHC LT-5. Sounds good to me for going insane on power. It would be unique to boot.

408PaceCar.. Didn't know that Lingenfelter built the engine in the Sledgehammer. That gives me a larger respect for him. I know he does great work now, but at such a price that I can't think about it. Doing a 254 mph street legal beast is just impressive at any price.
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Old Aug 30, 2001 | 02:14 AM
  #24  
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Default Re: 427 TT C5 or... (SlowC5)

SlowC5,

I've gotta say...you have some sweet taste in cars. However, I'm assuming that you'd be selling your current rocketsled to build the Viper and that could be a costly endeavour (assuming you'll lose a lot of money selling your current ride, which may or may not be the case).

With the Viper, you'd have a much more exclusive car, which I feel is pretty cool...but your current ride isn't exactly chopped liver either. :hat

Anyway, I have some other ideas if speed is your thing, but we'd better take it off forum as they involve other cars. If you give me a more clear picture of what you're looking for, I might be able to make some suggestions. I research a lot of high end cars and tuners, but unfortunately don't have the budget for most of them! :D

Talk to you soon, and don't forget that ride you "owe" me!

Steve T.
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Old Aug 30, 2001 | 12:45 PM
  #25  
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Default Re: 427 TT C5 or... (Godspeed)

In fact ARE is also developing a C5 TT kit right now. IMO the kit will deliver as much or more performance than the LPE kits at a more reasonable and sane price level.

http://www.agostino-racing.com
905.420.9195

-Jeremy

:yesnod: :yesnod: :yesnod:

[Modified by Godspeed, 1:33 PM 8/29/2001]
Well, Jeremy, many of us have been waiting for Nicks TT to come out. It was announced in May and was intially planned to have been out in Aug. Now they are saying at the end of October. As far as it being as good as LPE's for the same price, well I hope you are right but you had better get your flame suit on!.
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Old Aug 30, 2001 | 02:09 PM
  #26  
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Default Re: 427 TT C5 or... (Ha-Ha)

Steve Theodore,

I would like to hear about some of your ideas. I don't have the funds to probably float them, but would still like to chat about them.

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Old Aug 30, 2001 | 07:05 PM
  #27  
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Default Re: 427 TT C5 or... (SlowC5)

Do the Viper, you already have a sick TT Vette, might as well add a sick TT Viper to keep it companied in the garage;)
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Old Aug 30, 2001 | 07:15 PM
  #28  
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Default Re: 427 TT C5 or... (SlowC5)

TT Viper?

I hope I am not going to cause trouble by this post. :boxing

SVSi has a really nice TT setup for the Viper. It has taken them a long time to develop and there is only one that I know of so far.

On the other hand, I think a C5R block, heads, plus TT should be able to match the power of a TT Viper. What do you guys think?

C5 definitely has the aerodynamic advantage...

Let's hear what you think. :yesnod:

SlowC5
It depends on how often you want to fix your cars. It seems like every other magazine article involving a Viper talks about Viper problems. If they're not catching on fire, they are experiencing electrical problems. Or maybe the head gasket went out. Either one would be nice though.

99 C5 M6
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Old Aug 30, 2001 | 08:37 PM
  #29  
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Default Re: 427 TT C5 or... (SlowC5)

SlowC5: Is 94 or even 93 octane not available in your area? 800RWHP on 91 octane gas will be hard to achieve even on a destroked overbored LS1. Making this kind of power is all about air flow and how much you can move. Currently the LS1 intakes are a bottleneck around 600RWHP and the LS6 intakes around 700RWHP+. Although you could still increase boost and make more torque you wouldn't be able to make much more horsepower until you used a custom intake. But since I don't think money is a factor in your equation, I doubt a custom made 3k intake would stop you from reaching your goals. For sure though I would look at a Speedpro or other DFI setup since to supply that kind of fuel you will need to be able to drive high flow low impedance injectors. There are ancilliary EMU's available such as the Race Logic boxes supplied by Incon for there F-Body Stage II/III kits that drive additional throttle body mounted injectors, but I am not a big fan of them. I had trouble with mine and dealing with the MAF signal and they are difficult to tune.

Here is how I would start to plan a 2bar 1000rwhp LS1/LS6 combo: :crazy:

Engine - C5R Block (heat and cyro treated); Crank (destroked 3.75"); Pistons (dished 8.0:1 CR 3.905"); Cam (560/560 221/222 114); LS6 Heads (2.08/1.60 valves); Custom Rods; Custom Main Studs; Custom Head Studs; O-ringed with custom head gaskets;

Turbos - Twin Garrett oil and water cooled ball bearing T37's; twin air-to-air intercoolers; electronically adjustable boost controller and blow off valves

Fuel - boost referenced Speedpro system with widebands; custom fuel pumps, lines, and regulator; 72+pph injectors; seperate electronically switchable "race gas" fuel cell

Then of course you have to start addressing the rest of the drivetrain - clutch, tranny, rearend, etc. As much as I like my trusty T56 I'm not if I would trust it long at 1000RWHP without some serious reworking. :D

Good luck with whatever you decide, I'm sure it will be an amazing combo. :yesnod: :yesnod:


[Modified by Godspeed, 6:39 PM 8/30/2001]
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Old Aug 30, 2001 | 08:47 PM
  #30  
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Default Re: 427 TT C5 or... (Godspeed)

Oops... I messed up my reply. :bb


[Modified by SlowC5, 6:51 PM 8/30/2001]
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Old Aug 30, 2001 | 08:48 PM
  #31  
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Default Re: 427 TT C5 or... (Godspeed)

I'm assuming the intakes are restrictive at 600RWHP and 700RWHP (LS6) in NA engines? If that's so they can support significantly more HP than that boosted.

Also that engine you described at 2 bar (~29 PSI) would probably make 1500+ RWHP. To make 1,000 RWHP with an engine like you described would probably only take about 1 bar. Of course you probably meant 2 bar as in 1 bar of boost (IE 1 bar over atmosphere which itself is 1 bar).

What kind of turbos are the T37's? Are they capable of supporting that kind of power?
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Old Aug 30, 2001 | 09:13 PM
  #32  
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Default Re: 427 TT C5 or... (Godspeed)

Sadly, only 92 is available and it's bad 92's. :(

Since I plan on the C5R heads, intake will have to be custom. :yesnod:

To make serious power and still have it very streetable, I am thinking Motec. :bb I like the Motec setup because it can be setup as a mass air system.

Wouldn't you think 8:1 static CR is a little on the low side? I don't want the low rpm to be too sluggish. :bb

The money saved from not going to Viper could be enough for Titanium stuff. :yesnod:

You guys are awesome...

SlowC5
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Old Aug 30, 2001 | 09:34 PM
  #33  
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Default Re: 427 TT C5 or... (SlowC5)

Slow... you're nuts! :D I'll hopefully see a similar car to yours Bill C's Stage ? Whatever it is!

Too much is obviously just right for you eh? Knowing me, I'd probably bore of 600+ HP too! And I'd drive it daily like it's supposed to be driven. Good Luck on future projects.
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Old Aug 31, 2001 | 01:12 PM
  #34  
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Default Re: 427 TT C5 or... (T66Supra)

I'm assuming the intakes are restrictive at 600RWHP and 700RWHP (LS6) in NA engines? If that's so they can support significantly more HP than that boosted.
Actually from what I've seen they appear to be limits in FI application as well.

Also that engine you described at 2 bar (~29 PSI) would probably make 1500+ RWHP. To make 1,000 RWHP with an engine like you described would probably only take about 1 bar. Of course you probably meant 2 bar as in 1 bar of boost (IE 1 bar over atmosphere which itself is 1 bar).
Start off at 1bar and start working your way up - tune to your power goal and keep those A/F's safe. :p:

What kind of turbos are the T37's? Are they capable of supporting that kind of power?
They are Garrett made turbos that Incon uses with there Stage III kits. They are capable over supporting over 1200HP. In my previous stroker application they were making full boost around 2500RPM. :chevy


[Modified by Godspeed, 11:13 AM 8/31/2001]
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Old Aug 31, 2001 | 01:20 PM
  #35  
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Default Re: 427 TT C5 or... (SlowC5)

Sadly, only 92 is available and it's bad 92's.
Since I plan on the C5R heads, intake will have to be custom.
Keep some octane booster around. Hogan, MTI, Holley, Incon, and others are all doing custom intakes. What about the C5R intake itself?

To make serious power and still have it very streetable, I am thinking Motec. I like the Motec setup because it can be setup as a mass air system.
Well if you're doing a Motec and a custom intake I would suggest plumming the twin turbos and intercoolers into a custom twin throttle body and twin MAF into a dual plenum intake. :D

Wouldn't you think 8:1 static CR is a little on the low side? I don't want the low rpm to be too sluggish.
Well I know some LS1's running 8.5:1 CR without an issue at lower boost levels. Before deciding on a CR level of course talk to your engine builder and do some static and effective under boost compression ratio calculations. You can figure about a 10% drop in power for every point in CR. My 9.0:1 CR 385 was not sluggish at all out of boost and spooled the turbos instantly.

The money saved from not going to Viper could be enough for Titanium stuff.
Hmm, tons of power and light weightt too! Sounds like you're the man with the plan. Good luck this should be exciting!

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Old Sep 1, 2001 | 12:38 AM
  #36  
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Default Re: 427 TT C5 or... (Godspeed)

Sadly, only 92 is available and it's bad 92's. :(

Since I plan on the C5R heads, intake will have to be custom. :yesnod:

To make serious power and still have it very streetable, I am thinking Motec. :bb I like the Motec setup because it can be setup as a mass air system.

Wouldn't you think 8:1 static CR is a little on the low side? I don't want the low rpm to be too sluggish. :bb

The money saved from not going to Viper could be enough for Titanium stuff. :yesnod:

You guys are awesome...

SlowC5
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Old Sep 4, 2001 | 08:26 PM
  #37  
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Default Re: 427 TT C5 or... (SlowC5)

?
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Old Sep 4, 2001 | 08:57 PM
  #38  
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Default Re: 427 TT C5 or... (Godspeed)

Somehow, when I refresh the page, it posted double. :bb

Sorry...

SlowC5
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Old Sep 4, 2001 | 09:19 PM
  #39  
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Default Re: 427 TT C5 or... (Godspeed)

Less friends with Vipers, I would like to see how big their forum is. Somebody once did the math and came up with something like 3-5K Vipers have been made, 1/2 of them sit in the garage, the other have occasional drivers, a few of them not being driven right by the owners, and a few that are doing alright. The only reliability problems I have heard of, are on the TT Vipers. Oh and by the way I don't think any Viper have ran faster than Sw's Z07! :cheers: :cool:


[Modified by Shinobi's97, 7:20 PM 9/4/2001]
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Old Sep 5, 2001 | 12:14 PM
  #40  
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Default Re: 427 TT C5 or... (SlowC5)

So there have been no 9 second Vipers at all?
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