Stop me from selling my z28 for a 03-04 Cobra.
#41
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The cooling mod allows more coolant to flow out the back of the heads to help "FIX" the issue, but it's more of a bandaid fix. The only real way to fix this is more piston to wall clearance. A good tune can help (rich). Either way that's a major thing that sucks about the Cobra's.
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#43
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Well then, you should do some homework on Cobra's. There's tons of posts on forums about this. Back to back runs is one way that can cause detonation. It's the piston to wall clearance on 03/04 Cobra's. I believe the clearance is .001 where most forged pistons are .003. In the 2004 models Ford changed the coolant passages on the heads which are called "Jan 05" heads.
The cooling mod allows more coolant to flow out the back of the heads to help "FIX" the issue, but it's more of a bandaid fix. The only real way to fix this is more piston to wall clearance. A good tune can help (rich). Either way that's a major thing that sucks about the Cobra's.![Engarde](https://ls1tech.com/forums/images/smilies3/engarde.gif)
The cooling mod allows more coolant to flow out the back of the heads to help "FIX" the issue, but it's more of a bandaid fix. The only real way to fix this is more piston to wall clearance. A good tune can help (rich). Either way that's a major thing that sucks about the Cobra's.
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#45
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#46
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I am having this exact issue right now. I was getting ready to do a big build up on my Camaro with a 408 and nitrous but now before I do I am having trouble pulling the trigger becasue I have always wanted a cobra and am thinking now is a good time before I blow my wad on upgrading the Camaro any further.
#49
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That doesn't put me off from buying one(If I qualified for a loan) and YES it is a 03/04 Cobra specific problem (FACTS ARE FACTS). Did you even read what I posted? LMAO
I'm not trying to sound like an ***, but seriously go do homework and you'll see it IS INDEED a 03/04 Cobra "specific problem". From your reply it is clear you didn't read post #41
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#50
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The only thing i can say about an 04 cobra for a fact is you can bolt-on/tune(including pulley swap)and have a mid 7.5 second 1/8th car and have 100% stock driveability. I just think its an overall masterpiece of a car. I think its cheap to mod for what you get and you can get them pretty cheap now...Do i regret buying an 04 cobra instead of a c5 z06 for my daily driver??yes i do bc im a GM guy....They are the best car ford has ever and will ever make imo but i think in the future i will stick with the gm brand...World of difference just hard to explain...
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I say cobra, I am the opposite of everyone with the shifter location. Going from mustangs to a camaro, I miss my sn cars and shifter location, but I have been driving mustangs since I was 16 and i am now 31yrs old. The cobra with a kenne bell would be mind blowing, a used KB will go for the same as a set of headers, heads, cam, intake and tune on an ls1. You can't beat the power basic bolts ons ad to an LS1 no doubt, but an 03 with bolts ons, and not ls1 bolts ons ie, cam, ls6, and ported heads. I mean regular bolts ons, pulley, exhaust, cold air and a tune will put up stellar numbers. The refinement and drive of a cobra is a huge difference over an SN95 car, my 03 gt I had before my 00z, had an 03 cobra IRS with 4.10's rode 10000000000 millions times better then my Z ever could dream of, my 98z with a stock suspension still had no comparison. If you want higher payments and less money to mod get the cobra, if not bolt on the bottle and some heads and go to town on the Z, you have a damn nice Z so it would be a tough choice.
#53
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I'm well aware that all motors can blow. LS1's blow up all the time huh? Please show me where they blow up all the time. Lets talk stock form and not nitrous cars either. When I race in my car I'll do back to back run without worrying about my motor. Yeah, there is a possibility that I can hurt something, but it's a high risk when doing it in a Cobra. Either way, I'd still buy a Cobra over an LS1 even knowing that huge problem.
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I'm in the same boat as you OP!!
A 03/04 Cobra WILL BE my next car. Always loved them. They look amazing, perform great, and make power very easily.
Found a pretty god deal on a higher milage one last week. Had 110K miles and the owner was asking $12,500. Had a buyer for my SS, but it was sold before I could arrange anything.
Good deals are out there on them. A little change once in awhile wont hurt anything.
A 03/04 Cobra WILL BE my next car. Always loved them. They look amazing, perform great, and make power very easily.
Found a pretty god deal on a higher milage one last week. Had 110K miles and the owner was asking $12,500. Had a buyer for my SS, but it was sold before I could arrange anything.
Good deals are out there on them. A little change once in awhile wont hurt anything.
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I love Z06's... But theyre 2 different cars. The cobra you can make more power easily with cheaper, but the Z will handle better but is more expensive to mod. I guess it just depends on what you want out of the car.
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I just made the change about a month ago. I now enjoy driving my car again. My Formula was H/C M6 and it was a pain in the *** to drive even with a mild cam. It was work to drive and not fun any more like it was mostly stock. Now I have a 2003 Cobra convertible, pullied with basic bolt ons. It sounds amazing, pulls harder than my Formlua ever did, and is just fun to drive.
I did have a complaint with the shifter being so far away, but I got an MGW adjustable handle and put it all the way out so now its fine.
I did have a complaint with the shifter being so far away, but I got an MGW adjustable handle and put it all the way out so now its fine.
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