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02-16-2008, 05:27 PM
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CC Member
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Join Date: Nov 2007
Location: Clovis, CA,
CA
Cobra Make, Engine: R U Car Crafters, OK. 450 hp 351Cleveland.
Posts: 30
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Not Ranked
TKO500 or TKO600 trans???
I am running a 351 Cleveland with about 450HP and ??torque. Have now a 4 spd Ford top loader. I am looking at changing to either a TKO500 or a TKO 600. Does anyone know the difference in life-span with these approximate power readings? We drive mostly on the road and an occasionly slalom. No stop light Grand Prix starts or racing involved. I love to drive it but I do not beat it up. I just blow off smart-assed Mustangs! I only ask because I only want to do this changeover ONCE!!
Also, do either of these trannies have external or internal clutch hydralics?
Thanks for any opinions. Please answer here or privately.
Bob
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02-16-2008, 05:37 PM
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Senior Club Cobra Member
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Join Date: May 2001
Location: Florence,
AL
Cobra Make, Engine: RCR GT 40 & 1966 Fairlane 390 5 speed
Posts: 4,511
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Not Ranked
The TKO 500 will last you a life time. More than enough trannie for the type of driving you do. IMHO
Dwight
__________________
''Life's tough.....it's even tougher if you're stupid.'' ~ John Wayne
"Happiness Is A Belt-Fed Weapon"
life's goal should be; "to be smarter than inanimate objects"
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02-16-2008, 05:41 PM
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CC Member
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Join Date: Jan 2004
Location: Wayne,
NJ
Cobra Make, Engine: Contemporary 482 all aluminum Tunnelport Self built and owned since 1980 frame#0000017 and owner of frame CCX 33961 looking for an FIA body to go with it
Posts: 433
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Not Ranked
Bob,
Either one will last you, the only difference I have seen is the 500 has a 3:27 1st gear which will probably be usless unless you have really high gears in your rear like 280 or less. The 600 has a 2:87 1st.
JMHO
Rich
__________________
Cobrarich
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02-16-2008, 05:54 PM
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Senior Club Cobra Member
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Join Date: May 2001
Location: Florence,
AL
Cobra Make, Engine: RCR GT 40 & 1966 Fairlane 390 5 speed
Posts: 4,511
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Not Ranked
trannie????
I have small rear tires (25") so I had to go with the 600 with the 2.87 first gear. Now I can do 30 mph in first gear. It would have been cheaper to buy tires and rims. 
What size tires do you have and rear end ratio? You need to consider first gear speed and four/fifth gear cruising speed/rpm. Look at everything and pick the best compromise for you.
Here is a car math site to help.
Wallace Racing - Calculate Speed for given RPM, Rear Gear Ratio and Trans Gear Ratio
Wallace Racing - Automotive Calculators
Dwight
__________________
''Life's tough.....it's even tougher if you're stupid.'' ~ John Wayne
"Happiness Is A Belt-Fed Weapon"
life's goal should be; "to be smarter than inanimate objects"
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02-16-2008, 05:58 PM
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CC Member
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Join Date: Oct 2007
Location: Mickleton,
NJ
Cobra Make, Engine: Superformance #2731 (now sold)
Posts: 62
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Not Ranked
The cost difference between the two is nil. I went with the 600.
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02-16-2008, 06:02 PM
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CC Member
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Join Date: Dec 2001
Location: Louisville,
KY
Cobra Make, Engine: I'm Cobra-less!
Posts: 9,417
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Not Ranked
I agree. There's not much price difference at all. I'd go big.
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02-16-2008, 06:04 PM
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CC Member
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Join Date: Nov 2007
Location: Clovis, CA,
CA
Cobra Make, Engine: R U Car Crafters, OK. 450 hp 351Cleveland.
Posts: 30
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Not Ranked
TKO500 and TKO600 trannies
I neglected to add some more vitals:
rear end ratio 3.27
tires 25" dia and 78.5" circumferance
Bob
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02-16-2008, 08:15 PM
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CC Member
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Join Date: Dec 2006
Location: Littleton,
co
Cobra Make, Engine: SPF 2482 Shelby/Roush 427
Posts: 52
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Not Ranked
If I remember right the 500 was rated up to 550HP and the 600 was somewhere around 700-750. My motor was rated around 530hp so it seemed like it was getting to the high end of the 500 but would be ok. I ended up going with the 600. The cost was only slightly more and seemed like a safer bet in the long run. I don't know if that helps, but safer then sorry.
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02-16-2008, 08:21 PM
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CC Member
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Join Date: Jan 2008
Cobra Make, Engine:
Posts: 773
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Not Ranked
you can run either an internal or external slave.
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02-16-2008, 08:29 PM
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CC Member
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Join Date: Jun 2005
Cobra Make, Engine:
Posts: 3,077
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Not Ranked
You need to access the charts and do the calcs. My guess would be the TKO500 since you have a 3.27 rear end. If I get a chance I will run them and post
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02-16-2008, 08:53 PM
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Senior Club Cobra Member
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Join Date: May 2001
Location: Florence,
AL
Cobra Make, Engine: RCR GT 40 & 1966 Fairlane 390 5 speed
Posts: 4,511
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Not Ranked
do the math
Here is a site to help do the cals. Remember you need to stay in the 2000 rpm range to cruise at 45 mph and 70 mph. Unless you have a lot of torque under 2000 prms. You can use 4 th when cruising 45 - 50 mph and 5 th when your doing 70 - 80 mph.
Second Strike Gearing Calculator
Dwight
__________________
''Life's tough.....it's even tougher if you're stupid.'' ~ John Wayne
"Happiness Is A Belt-Fed Weapon"
life's goal should be; "to be smarter than inanimate objects"
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02-17-2008, 05:24 AM
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CC Member
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Join Date: Apr 1999
Location: cleveland,
OH
Cobra Make, Engine: CSX4000, 427
Posts: 1,999
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Not Ranked
Quote:
Originally Posted by pasnbyu
I am running a 351 Cleveland with about 450HP and ??torque. Have now a 4 spd Ford top loader. I am looking at changing to either a TKO500 or a TKO 600.
Bob
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I saw that you're running a 3.27 rear.
Which toploader do you currently have, the close or wide ratio?
What is it that you hope to gain by switching to a TKO ?
__________________
"After jumping into an early lead, Miles pitted for no reason. He let the entire field go by before re-entering the race. The crowd was jumping up and down as he stunned the Chevrolet drivers by easily passing the entire field to finish second behind MacDonald's other team Cobra. The Corvette people were completely demoralized."
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02-17-2008, 08:38 AM
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CC Member
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Join Date: Nov 2007
Location: Clovis, CA,
CA
Cobra Make, Engine: R U Car Crafters, OK. 450 hp 351Cleveland.
Posts: 30
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Not Ranked
TKO500 or TKO600
Anthony,
I need an overdrive gear, and I really am not a big fan of top loaders, especially with Hurst shifters.
Bob
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02-17-2008, 08:42 AM
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CC Member
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Join Date: Apr 1999
Location: cleveland,
OH
Cobra Make, Engine: CSX4000, 427
Posts: 1,999
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Not Ranked
then either one will be fine for you.
__________________
"After jumping into an early lead, Miles pitted for no reason. He let the entire field go by before re-entering the race. The crowd was jumping up and down as he stunned the Chevrolet drivers by easily passing the entire field to finish second behind MacDonald's other team Cobra. The Corvette people were completely demoralized."
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02-17-2008, 09:13 AM
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CC Member
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Join Date: Feb 2006
Location: Arlington Hts,
IL
Cobra Make, Engine: SPF, KC 427
Posts: 424
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Not Ranked
The TKO 600 has much better gear ratios than the 500 as stated in an earlier reply. From your specs, I would not go with the TKO 500. Your 3.27 with small tires makes the TKO 600 the best choice. There is no difference in the life span of one over the other that I know of. Take the TKO600 with the .65 overdrive gear and you'll be very happy.
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To my Cobra: - - when I'm with you - Oboy!
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02-19-2008, 08:05 AM
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CC Member
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Join Date: Feb 2006
Location: Ft. Worth,
Tx
Cobra Make, Engine:
Posts: 257
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Not Ranked
With your rear gear ratio I would go with the TKO600RR that will give you the best of both worlds. You will have a very responsive transmission going through gears 1-4 and the overdrive ratio of .82 will allow you to drop the rpms and a lower speed around 55-60mph. jimig@standardtransmission.com
__________________
True friendship is like peeing your pants, everyone can see it, but only you can feel its warmth.
Plan your life like you will live to be 120 years old...Live your life like you could die tomorrow.
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02-19-2008, 09:13 AM
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Senior Club Cobra Member
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Join Date: Feb 2004
Cobra Make, Engine:
Posts: 1,226
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Not Ranked
I agree with Jimi. I have 3.27 rear gears with the TKO600RR. It is the best of both worlds. Usable 1st AND 5th gears.
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02-19-2008, 09:34 AM
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CC Member
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Join Date: May 2000
Location: Northern VA,
VA
Cobra Make, Engine: Classic Roadsters
Posts: 2,765
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Not Ranked
Aside from the gear ratios, from a strength perspective, isn't the only difference between the two, the input shaft?
.
__________________
LIFE IS TOO SHORT TO WORRY ABOUT GOOD GAS MILEAGE
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Utinam logica falsa tuam philosophiam totam suffodiant!
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02-20-2008, 05:36 PM
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CC Member
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Join Date: Jan 2002
Location: Lakeland,
FL
Cobra Make, Engine: ERA 427SC FMS 351W
Posts: 199
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Not Ranked
I agree too
I agree with Jimi and JWD. I have 26" tires and 3.21 rear gear and the TKO600RR (with .82 OD) is perfect. My first gear is much more usable because the car launches well and I do not have to shift into second so quickly. The .82 OD works much better than the previous 3550 with the .64 OD; my engine stays at 2500 to 2700 at 70 MPH. Previously, the engine's RPM was too low about 1800 RPM. I switched from a Tremec 3550 to the TKO600RR. I purchased the transmission and advice from Jimi at Standard.
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02-26-2008, 09:37 AM
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CC Member
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Join Date: Feb 2006
Location: Ft. Worth,
Tx
Cobra Make, Engine:
Posts: 257
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Not Ranked
Quote:
Originally Posted by Cobra 29
I agree with Jimi and JWD. I have 26" tires and 3.21 rear gear and the TKO600RR (with .82 OD) is perfect. My first gear is much more usable because the car launches well and I do not have to shift into second so quickly. The .82 OD works much better than the previous 3550 with the .64 OD; my engine stays at 2500 to 2700 at 70 MPH. Previously, the engine's RPM was too low about 1800 RPM. I switched from a Tremec 3550 to the TKO600RR. I purchased the transmission and advice from Jimi at Standard.
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You purchased the transmission, the advice is always free  . Glad to see it all worked out well for you, there is nothing more frustrating then a transmission not doing what you want it to do.
__________________
True friendship is like peeing your pants, everyone can see it, but only you can feel its warmth.
Plan your life like you will live to be 120 years old...Live your life like you could die tomorrow.
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