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05-21-2009, 10:04 AM
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CC Member
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Join Date: May 2002
Location: Brisbane Australia,
QLD
Cobra Make, Engine: RMC under re-construction, GenIV with tremec 600, Jag 3.31 L/S diff
Posts: 3,318
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Not Ranked
Hey TL, great stuff.
Should be a nice setup. What bell housing and throw out bearing is Mal supplying you?. What's your rear end ratio, the standard FFR 3.27?.
By the way, I'm running a TKO600 with .82 5th gear behind my L76 with a 3.31 jag rear end.
__________________
It's impossible to soar like an eagle when you're surrounded by turkeys.
Last edited by Rebel1; 05-21-2009 at 10:13 AM..
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05-21-2009, 04:29 PM
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CC Member
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Join Date: Feb 2007
Location: Toowoomba,,
QLD
Cobra Make, Engine: Harrison supercharged
Posts: 291
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Not Ranked
I think the factory Five comes as this .... Complete Rear Suspension: High-end 3-link deluxe rear suspension with new Ford Racing 8.8” rear solid axle/differential with posi-traction and 3.73 gears. Might have to check that 5th gear ratio .82 will give you about 44 mph at 2000 rpm you will need a .64 5th gear ration for around 2000 rpm at 60 mph.
__________________
Harrison Cobra
Ford 4.6l supercharged
T56 six speed
Last edited by hsv300; 05-21-2009 at 05:02 PM..
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05-21-2009, 05:28 PM
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CC Member
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Join Date: May 2002
Location: Brisbane Australia,
QLD
Cobra Make, Engine: RMC under re-construction, GenIV with tremec 600, Jag 3.31 L/S diff
Posts: 3,318
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Not Ranked
With 3.73 rear with a .82 5th. will give 52mph at 2000rpm.
With 3.73 rear with a .64 5th. will give 66mph. at 2000rpm.
Both with 295/50/15 rear tyres at 26.61 diam.
__________________
It's impossible to soar like an eagle when you're surrounded by turkeys.
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05-21-2009, 05:34 PM
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CC Member
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Join Date: Feb 2007
Location: Toowoomba,,
QLD
Cobra Make, Engine: Harrison supercharged
Posts: 291
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Not Ranked
Quote:
Originally Posted by Rebel1
With 3.73 rear with a .82 5th. will give 52mph at 2000rpm.
With 3.73 rear with a .64 5th. will give 66mph. at 2000rpm.
Both with 295/50/15 rear tyres at 26.61 diam.
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I worked mine out on 25.00 diam
__________________
Harrison Cobra
Ford 4.6l supercharged
T56 six speed
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05-21-2009, 05:46 PM
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CC Member
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Join Date: Jul 2007
Location: Melbourne,
VIC
Cobra Make, Engine: Harrison build #98 with Supercharged 6.2L of Chev Power, TKO600 5 speed gearbox
Posts: 210
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Not Ranked
Quote:
Originally Posted by Rebel1
With 3.73 rear with a .82 5th. will give 52mph at 2000rpm.
With 3.73 rear with a .64 5th. will give 66mph. at 2000rpm.
Both with 295/50/15 rear tyres at 26.61 diam.
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I have the .82 5th gear in the box, so when it arrives we will sort out the rear end from there. (3.5 or 3.7 ish)
I'm running 17" tyres as well (not sure on actual size yet), that may alter things slightly, but by a pooftenth in real terms.
Looking forward to getting car in wonderful white gel coat in a couple of weeks.
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05-21-2009, 05:30 PM
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CC Member
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Join Date: Jan 2007
Location: Melbourne,
VIC
Cobra Make, Engine: Harrison, 6.0L Chev
Posts: 2,513
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Not Ranked
Quote:
Originally Posted by Rebel1
By the way, I'm running a TKO600 with .82 5th gear behind my L76 with a 3.31 jag rear end.
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Check out the "Cobra's" page on the Mal Woods site. He can but 5th gear ratios into a T56 ranging from 0.74 to 0.83. Is there some other reason you guys have gone with the TKO instead of the T56? Stronger, lighter or perhaps a better position for the shifter? 
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05-21-2009, 05:35 PM
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CC Member
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Join Date: May 2002
Location: Brisbane Australia,
QLD
Cobra Make, Engine: RMC under re-construction, GenIV with tremec 600, Jag 3.31 L/S diff
Posts: 3,318
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Not Ranked
Sambo, in my case it was fitting the T56 into the RMC. Not so much the length but the bulbous rear end of the box. The RMC has a very narrow tunnel.
Besides...I already had the TKO600.
__________________
It's impossible to soar like an eagle when you're surrounded by turkeys.
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05-21-2009, 05:40 PM
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CC Member
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Join Date: Jul 2007
Location: Melbourne,
VIC
Cobra Make, Engine: Harrison build #98 with Supercharged 6.2L of Chev Power, TKO600 5 speed gearbox
Posts: 210
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Not Ranked
Quote:
Originally Posted by Rebel1
Hey TL, great stuff.
Should be a nice setup. What bell housing and throw out bearing is Mal supplying you?. What's your rear end ratio, the standard FFR 3.27?.
By the way, I'm running a TKO600 with .82 5th gear behind my L76 with a 3.31 jag rear end.
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Warwick said that the diff ratio was 3.03, but that seems low. It will be changed to a 3.5 or thereabouts.
As for the bell housing and throw bearing, I'm not sure about that. I gave him the details and he came at me with what he would recomend for use in the Harrison. In speaking with Doug Pearce, I decided that I wouldn't worry about a 6 speed. I would like to get a 5 speed for my FJ40 with 350 Chev though!!!.
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05-21-2009, 06:08 PM
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CC Member
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Join Date: May 2002
Location: Brisbane Australia,
QLD
Cobra Make, Engine: RMC under re-construction, GenIV with tremec 600, Jag 3.31 L/S diff
Posts: 3,318
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Not Ranked
TL, the bellhousing that Mal sold me is a heap of $hit. Was really for a smaller flywheel and you also had to grind out a starter pocket. It was really a rework of the older chev bellhousing.
Checkout here for excellent bell housings. http://www.quicktimeinc.com/products.html
__________________
It's impossible to soar like an eagle when you're surrounded by turkeys.
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05-21-2009, 06:20 PM
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CC Member
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Join Date: May 2002
Location: Brisbane Australia,
QLD
Cobra Make, Engine: RMC under re-construction, GenIV with tremec 600, Jag 3.31 L/S diff
Posts: 3,318
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Not Ranked
The Quicktime 6036 looks the ticket for you.
__________________
It's impossible to soar like an eagle when you're surrounded by turkeys.
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05-21-2009, 06:37 PM
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CC Member
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Join Date: May 2004
Location: Melbourne,
Vic
Cobra Make, Engine: Cobra RMC 377ci Windsor, Harrison Daytona Coupe, Ford XC Coupe.
Posts: 1,588
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Not Ranked
Diffs
T.L.
I would start looking for a 3.5/3.7 diff now, very hard to get.
I changed mine recently from a 3.9 to a 3.5 and it changed the car completely.......................  
Best thing I have done so far..
STIFFY
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05-21-2009, 06:39 PM
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CC Member
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Join Date: May 2004
Location: Melbourne,
Vic
Cobra Make, Engine: Cobra RMC 377ci Windsor, Harrison Daytona Coupe, Ford XC Coupe.
Posts: 1,588
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Not Ranked
Rebel1
Hey Rebel1,
Do you have a car 
Seems like a looooonnggg builg I mean Re-build......
STIFF
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05-21-2009, 06:54 PM
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CC Member
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Join Date: May 2002
Location: Brisbane Australia,
QLD
Cobra Make, Engine: RMC under re-construction, GenIV with tremec 600, Jag 3.31 L/S diff
Posts: 3,318
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Not Ranked
Thats what happens when you work 7 days stiffy. It's also what happens when you have a back injury from a MVA that restricts what time you do have.
Hey, do you like sanding?, thats where I'm at. Being RMC there is a heap of filling too.
__________________
It's impossible to soar like an eagle when you're surrounded by turkeys.
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