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Re: How would you build a 518 trans for 550hp/torq?
[Re: DaytonaTurbo]
#544003
12/07/09 04:51 PM
12/07/09 04:51 PM
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Joined: Jan 2003
Posts: 74,948
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 74,948
U.S.S.A.
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Quote:
Thanks for the info john, sounds like the overdrive and extra clutch mods are likely overkill for my plans for the car. Since I have no intention of putting a roll bar in the car I won't be going that fast down the strip with it. I seem to recall some mods having to do with enlarging the oil supply holes in the OD shaft. Is this worth looking into or can I just leave it as-is?
I don't think it's overkill , you don't have to do the mods that are done to my trans , my truck is not stock , but the diesel and V10 put out over 400lb/ft of torque , the gasser were only 350ish. I would at minimum go the the Diesel/V10 clutch pack specs , it's not expensive and it's not going to hurt , especially the increase in clutches for the DIRECT clutch pack , it's not a straight thru output like a 727.
I would like to put one of these trans in a passenger car , I might talk a friend into it in the future once he starts  that his engine is running at 187 degrees on the highway at 90mph ...
You can drill the oil hole that will help , also get the sonnax rear piston support, it's modified to increase oil flow/decrease leakage and changes the oiling to the rear drum support surface.
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Re: How would you build a 518 trans for 550hp/torq?
[Re: JohnRR]
#544004
12/08/09 02:51 AM
12/08/09 02:51 AM
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Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
DaytonaTurbo
OP
Too Many Posts
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OP
Too Many Posts
Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
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Hey john, I found this pdf somewhere, it's got an exploded view and parts breakdown for the a-500 trans. I will buy the correct manual, but for now this is something to look at and should be fairly close to the 518... Now when you add an extra clutch/steel to the OD direct clutch pack, do any mods need to be done or will the extra clutch/steel go right in? Also when you say you can mod to add an extra clutch/steel to the OD clutch pack in the rear of the main case, are you talking about the clutch pack this pdf diagram refers to as the "rear clutch"? Then the pressure plate it refers to as part "20" needs to be milled down by the thickness of an extra clutch/steel? Also do you have any info on the drilling of the holes in the od shaft? Do you drill the holes in only the one shaft? Do you know to what size, or just the next size up? I saw the sonnax rear piston setup for sale and it's not expensive at all so if it's a good idea I'll go for it. Also, will a 727 governor kit work? Reason I ask is crt sells a 5800rpm governor kit for a 727 that I would really like. As you can tell I'm a transmission newbie but not afraid to learn.  Just want to do a half way decent job of setting this thing up the first time.
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Re: How would you build a 518 trans for 550hp/torq?
[Re: DaytonaTurbo]
#544010
12/09/09 08:57 PM
12/09/09 08:57 PM
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Joined: Feb 2003
Posts: 10,198
Someplace you aren't
SomeCarGuy
I Live Here
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I Live Here
Joined: Feb 2003
Posts: 10,198
Someplace you aren't
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Unless you known the people, I bet 30 bucks is going to be a fairly good price for what you need, and you know it will work since it is something they do every day. Well, in theory anyway
I want my fair share
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