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AC-460 12-10-2008 08:08 PM

What diff to use for Cobra
 
The Same Old Question Comes Up Again ! Im Runnig A 460 Stroked To 545 With A C6 And A 288 Jag Diff I Have Bought A Tko600 And A 9 Inch Irs Housing Going To Run 3.5 Gears Should I Run Open Centre Lsd Or Detroit Locker?

HighPlainsDrifter 12-10-2008 08:15 PM

No locker
 
Hi,
I would not run a locker on the street as it will push you off of any crowned road and when you let up off the gas as you go into a turn it will swing the rear around.
You could also install an air locker diff, that way you can lock the diff for drag racing and and unlock it for turns.
Good luck,
Perry.

stephen low 12-11-2008 12:14 AM

Just make it a strong one with that donk!!

How's the tremec going Mark?

The slow slow boat is still chugging for us as I believe I heard the words "they rolled the container" just before he said delivery early in the new year - sheez

AC-460 12-11-2008 01:46 AM

How'z it going steve did you finish up bringing a tko in! How is the cobra going I bought one in air freight Cheers Mark

stephen low 12-11-2008 02:18 AM

Mark

My post above means I'm still waiting for mine to land here and then there still may be problems. Should have airfreighted like you. What did that end up costing you for the freight side of it?

How is the TKO to use?

And where did you have your shift point and how is it for location in the car?

Steve

AC-460 12-11-2008 02:49 AM

Haven't put it in yet waiting to sort out the diff will do both at the same time
Freight was $600 plus $950 GST and other charges That was for $6300 dollars au worth of gear Its very important that the goods are marked made in USA otherwise you'll pay another %10 import duty

*Cobber* 12-11-2008 02:50 AM

1 Attachment(s)
Have a play with this ratio calculator.

AC-460 12-11-2008 02:51 AM

Is there anyone out there that can help me with the diff situation

AC-460 12-11-2008 02:56 AM

Thanks cobber I'm running .64 5th 3.25 will be to high Iam currently running lsd 2.88 i'll probably stick with LSD

tomcat racing 12-11-2008 02:43 PM

Quote:

Originally Posted by HighPlainsDrifter (Post 904215)
Hi,
I would not run a locker on the street as it will push you off of any crowned road and when you let up off the gas as you go into a turn it will swing the rear around.
You could also install an air locker diff, that way you can lock the diff for drag racing and and unlock it for turns.
Good luck,
Perry.

thats not true , i run a locked diff on the street and have done so for years and have not experienced any of the those problems, the 71 xy gtho came from the factory fitted with detroit lockers and have never heard of any of them being turned around. tomcat

tony martin 12-11-2008 09:42 PM

Gear Ratios
 
THANKS FOR THE GEAR RATIO CHART.:3DSMILE:
ITS THE BEST,EASIEST TO USE THAT I HAVE COME ACROSS.:cool:

REGARDS

AC-460 12-11-2008 10:34 PM

This one is easier http://www.secondstrike.com/Technical/GearCalc.asp

AC-460 12-11-2008 10:39 PM

Quote:

Originally Posted by tomcat racing (Post 904409)
thats not true , i run a locked diff on the street and have done so for years and have not experienced any of the those problems, the 71 xy gtho came from the factory fitted with detroit lockers and have never heard of any of them being turned around. tomcat

Are you running a detroit locker or a locked diff

tony martin 12-12-2008 12:01 AM

Gear Ratios
 
Thanks Again.

I Still Like Your 1st One.the Graphs Help A Lot When Calculating Change Points For Different Internal Gear Ratios.%/

Have A Wonderful Cobra Day:d

tomcat racing 12-12-2008 12:41 AM

locked diff

razerwire 12-12-2008 07:45 AM

Side note, but interesting, the challenge shelby cobras run solid spool,and have for some time .

iwantacobra427 12-12-2008 01:52 PM

When I picked the TKO 600 w/ 0.64 OD and a 3.77 rear end for my FIA most people on this site said 1st gear would be useless... I just finished the build the other weekend and for the first time I had it on the open roads today. I'm very happy with my tranny and rear end combo! It accelerates very well! I can't wait until it's broken in and I can spin the motor a little!

AC-460 12-12-2008 08:21 PM

What diff are you running open centre LSD Or Detroit Locker?

iwantacobra427 12-12-2008 09:01 PM

I ordered the diff with LSD.

AC-460 12-13-2008 02:43 PM

I am leaning toward the detroit locker is anyone going to talk me out of it


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