Coan super sprag for street, strengths/drawbacks?
#954619
03/20/11 05:08 PM
03/20/11 05:08 PM
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Joined: Jan 2003
Posts: 1,379 Houston,Tx.
Lee446
OP
pro stock
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OP
pro stock
Joined: Jan 2003
Posts: 1,379
Houston,Tx.
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69 Satelite,528 hemi. This is mainly a street car and still uses a modified vb that retains auto function. Short story, went to a regional outlaw track for a fun run/race. Poor track prep, hooked hard on drag radials, got out about 30 ft and the tires broke loose/hooked up again and busted my sprag. In thirty years of street driving and bracket racing, this is the first time that I broke a trans and don't want to repeat it. Would upgrading to the Coan super sprag be a worthwhile investment? Are they just harder to break, or virtually unbrakeable? Do you have to do any other mods to use one? I looked on their site and read the instructions and it is basically a bolt in, I have a good torqueflite guy who builds my transmissions. I really dont know much about automatics, so any advice is welcome! Thanks, Lee.
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Re: Coan super sprag for street, strengths/drawbacks?
[Re: dOc …]
#954623
03/20/11 10:30 PM
03/20/11 10:30 PM
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Joined: Jan 2003
Posts: 4,616 Kissimmee Fl.
dusturbd340W5
master
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master
Joined: Jan 2003
Posts: 4,616
Kissimmee Fl.
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well I can tell you that the Coan super sprag is using the sprag out of a ford c-6 trans and in 25 years in the business I have never seen a c-6 roll a sprag like the stock 727 do and that is because like stated above there are more rollers and there is just not enough room to roll them. They are the only bolt in sprag that does anything for you other than save a bad case.
70 duster full chassis super pro 416 CNC Indybrock heads 727 w/brake
best so far 1.212 60 6.219 in 1/8 at 110.88 9.768 at 137.81 1/4
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Re: Coan super sprag for street, strengths/drawbacks?
[Re: dusturbd340W5]
#954625
03/21/11 01:09 AM
03/21/11 01:09 AM
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Joined: Jan 2003
Posts: 75,094 A Banana Republic near you.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,094
A Banana Republic near you.
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Quote:
They are the only bolt in sprag that does anything for you other than save a bad case.
The A+A sprag is different than the COAN but has more rollers also , I'm not familiar with the Coan but I can't see the A+A rolling over either .
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Re: Coan super sprag for street, strengths/drawbacks?
[Re: dusturbd340W5]
#954630
03/21/11 11:23 PM
03/21/11 11:23 PM
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Joined: Jan 2003
Posts: 75,094 A Banana Republic near you.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,094
A Banana Republic near you.
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Quote:
Quote:
.... so the Coan sprag for a TF is an exact C-6 piece ?
Yes a Coan sprag come with a new inner and outer race that uses a C-6 sprag assembly.
I think what the protologist is asking is if the entire assembly is a C6 piece and from your answer it is NO .
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Re: Coan super sprag for street, strengths/drawbacks?
[Re: JohnRR]
#954632
03/22/11 11:46 PM
03/22/11 11:46 PM
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Joined: Jul 2008
Posts: 30,486 Florida STAYcation
dOc …
The village idiot's idiot
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The village idiot's idiot
Joined: Jul 2008
Posts: 30,486
Florida STAYcation
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Quote:
protologist
U R a piece of wurk RR ... you said you blocked me months ago .. but now you follow-me-around like a little puppy-dog SMELLING around the "protologist" area ....
FIND another hobby RR ... you are BUSTED ...
.... and BTW ....the correct spelling is PROCTOLOGIST..... NUMBnutz ..
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Re: Coan super sprag for street, strengths/drawbacks?
[Re: Clanton]
#954637
10/13/11 05:10 PM
10/13/11 05:10 PM
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Joined: Mar 2004
Posts: 528 Oak Grove, MN
lowflyingdart
mopar
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mopar
Joined: Mar 2004
Posts: 528
Oak Grove, MN
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Put in either the Coan or the A&A 16 element sprag. It will be just fine on the street. The only draw back is cost. We had a customer break a rear end with a 727 and a Coan Supersprag. The Sprag held, but was damaged. Most importantly it held and didn't overrun the drum. Larry
"I have not failed. I've just found 10,000 ways that won't work."
Thomas A. Edison
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