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CC Advertisers
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11-09-2010, 03:36 PM
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CC Member
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Join Date: Dec 2001
Location: Castalia,
Oh
Cobra Make, Engine: EM cobra, 450 inch sbc running a best ET of 9.14..so far..ALL MOTOR...approx 800 horse.............ERA with 482 FE..All Aluminum Engine
Posts: 1,395
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Not Ranked
Definately looks like a C-4. The stock C-4 half shaft is 18" from CL to CL of u-joint. Can you measure yours??
__________________
Jack
XSSIVE .....
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11-09-2010, 03:39 PM
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CC Member
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Join Date: Oct 2003
Location: Queen Creek,
AZ
Cobra Make, Engine: Midstates, Vette suspension, Baer 6P brakes, 540 cid Chevy, Haltech Fuel Injection
Posts: 906
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Not Ranked
Its a C4 for sure, you can even see part of the batwing... But those halfshafts look like steel, not aluminum. Likely shortened and cheaper to shorten in steel than aluminum, given the requirement to re-heat treat the aluminum after welding!
__________________
E. Wood
ItBites
10.69 @ 129.83mph - on pump gas and street tires
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11-09-2010, 04:11 PM
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CC Member
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Join Date: Apr 2010
Location: Tampa,
FL
Cobra Make, Engine: Everett Morrison
Posts: 144
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Not Ranked
Thank you again for the responses. I thought it looked like a C4 and I have actually spoke to both Vette Brakes and VanSteel as they are both local. I may just drive it over.
I look forward to the day I post a question here that has a simple solution 
Looks like I'll be looking at my shortened steel half shafts, narrowed unileaf, and steep shock mounts...good times.
Is there anything for these cars that the local autoparts store sells??? |
11-09-2010, 04:28 PM
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CC Member
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Join Date: Dec 2001
Location: Castalia,
Oh
Cobra Make, Engine: EM cobra, 450 inch sbc running a best ET of 9.14..so far..ALL MOTOR...approx 800 horse.............ERA with 482 FE..All Aluminum Engine
Posts: 1,395
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Not Ranked
Quote:
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Is there anything for these cars that the local autoparts store sells???
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Wax.......
__________________
Jack
XSSIVE .....
Last edited by Hotfingrs; 11-09-2010 at 04:32 PM..
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11-09-2010, 04:31 PM
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CC Member
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Join Date: Dec 2001
Location: Castalia,
Oh
Cobra Make, Engine: EM cobra, 450 inch sbc running a best ET of 9.14..so far..ALL MOTOR...approx 800 horse.............ERA with 482 FE..All Aluminum Engine
Posts: 1,395
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Not Ranked
I'm going to have some chromolly half shafts built this winter, hopefully they will last more than a run or two.
__________________
Jack
XSSIVE .....
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11-09-2010, 04:44 PM
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CC Member
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Join Date: Apr 2010
Location: Tampa,
FL
Cobra Make, Engine: Everett Morrison
Posts: 144
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Not Ranked
Quote:
Originally Posted by Hotfingrs
I'm going to have some chromolly half shafts built this winter, hopefully they will last more than a run or two.
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Jack, In your experience, what are the chances I'd break a half shaft with 15" BFG street tires? Or any driveline component? Of course anything can break but just the overall durability of the C4 with street tires and 326 RWHP and similar torque. I want to do more quarter mile runs but don't want to fear that I'll need to trailer it every time I head to the track. |
11-09-2010, 04:39 PM
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CC Member
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Join Date: Aug 2009
Location: Atlanta,
GA
Cobra Make, Engine: 86 Everett Morrison 90" WB. 428 FE
Posts: 1,151
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Not Ranked
Looks like you have a rub on your right half shaft.
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11-10-2010, 02:00 AM
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CC Member
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Join Date: Dec 2001
Location: Castalia,
Oh
Cobra Make, Engine: EM cobra, 450 inch sbc running a best ET of 9.14..so far..ALL MOTOR...approx 800 horse.............ERA with 482 FE..All Aluminum Engine
Posts: 1,395
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Not Ranked
I'd say with the steel half shafts, you would be pretty safe. I also come off the line at idle, but stock aluminum shafts can't stand it when you have 800 horses on tap. The U-joints don't break, I just rip the yoke off the shaft. Even at idle a 1.38 60' time is pretty violent. I also run an automatic. Hopefully with the chromolly shafts I'm having built, they will last.
__________________
Jack
XSSIVE .....
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11-10-2010, 05:37 AM
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CC Member
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Join Date: Jan 2001
Location: Cape Coral,
FL
Cobra Make, Engine: 2009 Solbra
Posts: 3,861
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Not Ranked
Mike,
A stock C3 or a C4 suspension should hold up to your engine unless you go crazy with a 427 Chevy engine putting out over 800hp like Jacks and then see how fast you can turn the ¼ mile.
__________________
Dan Wulff
I carry a gun because a cop is too heavy.
(No doubt, most will blame it on the donuts.)
You're just jealous because the voices only talk to me
Earth is the insane asylum for the universe.
The gene pool could use a little chlorine.
The original point and click interface was a Smith & Wesson.
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12-01-2010, 09:45 AM
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CC Member
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Join Date: Apr 2010
Location: Tampa,
FL
Cobra Make, Engine: Everett Morrison
Posts: 144
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Not Ranked
Update.....
The suspension is a C4 unit that has been narrowed by almost 5 inches.
The narrowed rear end allowed the deep dish wheels to fit under it.
I was very fortunate that Vette Brakes is local to me. I can only say that Gary and his team have been amazing! For those of you that have had the opportunity to work with them by phone, I can just add to impressive shop they run.
I have them currently building me an entire custom system with all adjustable trailing arms, camber smart struts and toe rods. They charged me no additional cost for the custom lengths and even powder coat everything in house!
As far as the spring. They tested mine and found that it has a rate of 680 lbs!
The factory Corvette uses one that is about 300 lbs, even their race only spring is 420 lbs. I think I know now why the car rides so rough. Needless to say, they will be making me one that is more appropriate to my car.
Does anyone know their spring rate and what I should use for mine?
I do like to Autocross but also plan to 1/4 mile it.
Any suggestions would be greatly appreciated.
Mike
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