Top speed?

[PARALYZER]

When my cobra was only making 495 RWHP I had it going 170 up here in Franny on the GPS.

Thats interesting.
Do you have the Coolant mod yet? I am afraid to go over 135 until I do.

[Fastrnu]

I have an '04.

[PARALYZER]

I have an '04.

03's and 04's alike.
We don't have crossover tubes that connect the heads in the rear. Therefore pistons 7 and 8 get lack of cooling during high speed runs.
I have seen more than 5 posts on SVTperformance of guys doing high speed runs, then right after they hear the piston knocking. The teflon coating gets burned off and the piston is ruined.

[Fastrnu]

03's and 04's alike.
We don't have crossover tubes that connect the heads in the rear. Therefore pistons 7 and 8 get lack of cooling during high speed runs.
I have seen more than 5 posts on SVTperformance of guys doing high speed runs, then right after they hear the piston knocking. The teflon coating gets burned off and the piston is ruined.

No the '04's have had that adressed. And if you can't go wfo then why..nevermind.

[Fastrnu]

And as far as holes 7 and 8 you can address that issue in the tune by pulling timing out of those two cylinders on the '03 's.

[badcobra]

No the '04's have had that adressed.

No they haven't. The '03/04 engines are identical except for some slight cylinder head revisions. There still is no crossover on the rear of the heads. However, that mod isn't going to prevent damage from high speed runs. The pistons are too tight in the bore, there is no fix for that except to hone the cylinders.

[theduckylittle]

I buried the Speedo in my '89 SHO once... down I-94 on the way to Fargo.

I have no reason to do that again.

-Duck

[Fastrnu]

I was informed that those slight revisions in the cylinders included a coolant passage change.

[PARALYZER]

No the '04's have had that adressed. And if you can't go wfo then why..nevermind.

Read this....

http://www.socalterminators.com/ldc/index.html

[PARALYZER]

No they haven't. The '03/04 engines are identical except for some slight cylinder head revisions. There still is no crossover on the rear of the heads. However, that mod isn't going to prevent damage from high speed runs. The pistons are too tight in the bore, there is no fix for that except to hone the cylinders.

Wow, thats my first time hearing that.
If you hone the cylinders, you might as well put in the best piston money can buy. I really am not trying to have to dig inside the motor yet.

Sorry for the thread deviation

[Fastrnu]

Looks like a good idea. I asked the tuning guy where I purchased my tuning software specifically about the heating of cylinders 7 and 8. He told me I had an '04 and didn't have to worry. I guess he didn't know or didn't care to tell me the whole story.

[badcobra]

I was informed that those slight revisions in the cylinders included a coolant passage change.

This would be true, but it was only to fix the issue with the tick as the valve guides were failing from too much heat from lack of coolant flow. There is still a problem at the back of the cylinder head on the passenger side since there is no coolant crossover. However, this coolant crossover isn't the fix that everyone thinks it is, but it helps.

[PARALYZER]

Hey Bad, long time no see. No wonder. I see you have big plans.
I would love to see that beast.

[EVO8564]

I tried calling yesterday about that comment, what a dusch. I went 260 in my car

[Zinc]

165+ speedo in the gixxer (14.5k rpm in 6th)
145 hitting the governer in the 330
150+ racing a LS2 GTO on 94 N