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At what point do you need a Trans blanket or Shield?
#1293348
08/29/12 01:33 AM
08/29/12 01:33 AM
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Joined: Jan 2007
Posts: 10,139
A Red State
SNK-EYZ
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OP
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At what point do you need a Trans blanket or Shield?
I was talking to a buddy at a car show the other day and he asked if I was going to be running a trans blanket or shield when the Hemi goes in.
I hadn't even thought about it.
He said he runs a blanket, but talked about the CSI shields.
What are everyone's opinions on which is better.
The car is primarily a street car but will get raced.
572 Hemi, full manual 727 trans.
Kayse can't keep up at all now. lol
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Re: At what point do you need a Trans blanket or Shield?
[Re: Triple Threat]
#1293350
08/29/12 02:03 AM
08/29/12 02:03 AM
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Joined: Jan 2007
Posts: 10,139
A Red State
SNK-EYZ
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Thanks!  I'll need to install a roll bar before I can go legally go faster than 11.50 first anyway.  At what point do most people simply put in a trans shield/blanket simply for safety's sake?
Kayse can't keep up at all now. lol
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Re: At what point do you need a Trans blanket or Shield?
[Re: 10 o to go]
#1293352
08/29/12 07:01 AM
08/29/12 07:01 AM
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Joined: May 2004
Posts: 12,393
Taxes & Virus's R-US, NY
Dragula
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Taxes & Virus's R-US, NY
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Ours exploded last season due to the stand in drivers error. It was an older valve body without the low band apply, and he had never driven one or this car before, and lifted in 1st gear when it spun. Well, it broke his foot in three places, and had any of the shrapnel in the car hit him, it may have been far far worse. The floor blew apart, the shifter was in the back seat, the pedals got pushed up under the dash, and there were large chunks of trans and fluid everywhere in the car. Luckily, the car was on its first run, and none of the fluid ignited, and none of the shrapnel hit him. A year later, and he still walks with a limp. Some of the rollers from the sprag were in the car, and they went thru the floor like .22 rounds...Most of the trans was in pieces not much bigger than 2" square.
The track owner said, any chrysler product, no matter what the ET, should be mandated to run a sheild. Like racing in just a T-shirt without a fire jacket or helmet, and not running a sheild, its just an accident waiting to happen with some pretty severe consequences if it all goes wrong. Just because its not required doesn't mean you shouldn't have it. Even when I drive a 13 sec car, I wear a jacket, and harness, helmet, and racing shoes. Our car now has a CSR sheild, new floor, and we still run without a low band apply VB, but that is all I have ever driven, and knock on wood, have yet to forget to up shift before lifting when it spins.
With the chrysler trans, it does not have to be fast to have this happen. And all it takes is one little mistake, and it can let go in spectacular fashion.
Last edited by Dragula; 08/29/12 07:58 AM.
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Re: At what point do you need a Trans blanket or Shield?
[Re: SNK-EYZ]
#1293354
08/29/12 09:13 AM
08/29/12 09:13 AM
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Joined: Jan 2003
Posts: 75,023
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,023
U.S.S.A.
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Quote:
At what point do you need a Trans blanket or Shield?
I was talking to a buddy at a car show the other day and he asked if I was going to be running a trans blanket or shield when the Hemi goes in.
I hadn't even thought about it.
He said he runs a blanket, but talked about the CSR shields.
What are everyone's opinions on which is better.
The car is primarily a street car but will get raced.
572 Hemi, full manual 727 trans.
Who are you getting the trans from , for safety sake get the A+A or Coan sprag , and an A+A billet front drum and you'll not really need the shield or blanket, but NHRA will still require it for 10.99 legal.
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Re: At what point do you need a Trans blanket or Shield?
[Re: JohnRR]
#1293355
08/29/12 10:04 AM
08/29/12 10:04 AM
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Joined: Jan 2003
Posts: 13,367
Marion, South Carolina [><]
an8sec70cuda
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I Live Here
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Marion, South Carolina [><]
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You need either a shield or a blanket AND a billet drum. Mine lasted 2 years before I exploded the stock drum, but when it did come apart it made me a believer. The CSR shield saved my feet, literally. The billet drums are supposed to be bulletproof, but after seeing what happens firsthand when one comes apart, I'm not willing to take the chance of running one w/ a shield. 
CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
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Re: At what point do you need a Trans blanket or Shield?
[Re: an8sec70cuda]
#1293357
08/29/12 10:22 AM
08/29/12 10:22 AM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
You need either a shield or a blanket AND a billet drum. Mine lasted 2 years before I exploded the stock drum, but when it did come apart it made me a believer. The CSR sheid saved my feet, literally. The billet drums are supposed to be bulletproof, but after seeing what happens firsthand when one comes apart, I'm not willing to take the chance of running one w/ a shield.
I still run a stock drum (running into the 8s).. you
just cant do stupid stuff... if it spins SHIFT before
you let off.... if you waste the over running clutch
(sprag) it will spin the drum 2.2 times the engine
RPM.. pretty much anything over 6200 rpms with give
it enough rpm to blow the drum with centrifugal force
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Re: At what point do you need a Trans blanket or Shield?
[Re: MR_P_BODY]
#1293358
08/29/12 11:25 AM
08/29/12 11:25 AM
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Joined: Jan 2003
Posts: 13,367
Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,367
Marion, South Carolina [><]
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Quote:
Quote:
You need either a shield or a blanket AND a billet drum. Mine lasted 2 years before I exploded the stock drum, but when it did come apart it made me a believer. The CSR sheid saved my feet, literally. The billet drums are supposed to be bulletproof, but after seeing what happens firsthand when one comes apart, I'm not willing to take the chance of running one w/ a shield.
I still run a stock drum (running into the 8s).. you
just cant do stupid stuff... if it spins SHIFT before
you let off.... if you waste the over running clutch
(sprag) it will spin the drum 2.2 times the engine
RPM.. pretty much anything over 6200 rpms with give
it enough rpm to blow the drum with centrifugal force
Bad things happen even if you don't "do stupid stuff". I'd never recommend using a stock drum in a high powered car.
CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
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Re: At what point do you need a Trans blanket or Shield?
[Re: DemonDust]
#1293360
08/29/12 04:58 PM
08/29/12 04:58 PM
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Joined: Jan 2007
Posts: 10,139
A Red State
SNK-EYZ
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OP
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Kenny Helton built the trans. He suggested two different choices on upgrading the sprag (both from CRT). After talking it over with Kenny I chose the stronger 16 roller sprag. The valve body is a reverse manual (can't remember the brand right now). He also recommended other internal parts which were used in building the trans. He didn't feel the drum was absolutely necessary in my trans build for the cost it would add so kept the stock one. I already bought the locking dipstick from CRT. I guess now I have to decide which way to go, blanket or shield. The blanket could probably be installed later but not the shield. I don't want to have to pull the trans later to install either after the drivetrain is installed. Thanks for the replies!
Kayse can't keep up at all now. lol
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Re: At what point do you need a Trans blanket or Shield?
[Re: SNK-EYZ]
#1293362
08/29/12 07:15 PM
08/29/12 07:15 PM
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Joined: Jan 2003
Posts: 75,023
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,023
U.S.S.A.
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Quote:
Kenny Helton built the trans.
He suggested two different choices on upgrading the sprag (both from CRT).
After talking it over with Kenny I chose the stronger 16 roller sprag.
The valve body is a reverse manual (can't remember the brand right now).
He also recommended other internal parts which were used in building the trans.
He didn't feel the drum was absolutely necessary in my trans build for the cost it would add so kept the stock one.
I already bought the locking dipstick from CRT.
I guess now I have to decide which way to go, blanket or shield.
The blanket could probably be installed later but not the shield.
I don't want to have to pull the trans later to install either after the drivetrain is installed.
Thanks for the replies!
There is really only one choice in rear sprags and that is the 16 roller ,, CRT sells the A+A unit , the Coan has better bolts to hold it but basically the the same .
You built a 572" Hemi, the $700 for the Billet A+A drum is a drop in the bucket.
You definitely need a shield or blanket, just be warned they only slow down the explosion, there have been pictures of cars with exploded 727's where the drum parts still cam thru the floor and they have sheilds and/or blankets.
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Re: At what point do you need a Trans blanket or Shield?
[Re: SNK-EYZ]
#1293363
08/29/12 07:29 PM
08/29/12 07:29 PM
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Joined: Nov 2009
Posts: 2,177
ill
dennismopar73
top fuel
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top fuel
Joined: Nov 2009
Posts: 2,177
ill
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Quote:
Kenny Helton built the trans.
He suggested two different choices on upgrading the sprag (both from CRT).
After talking it over with Kenny I chose the stronger 16 roller sprag.
The valve body is a reverse manual (can't remember the brand right now).
He also recommended other internal parts which were used in building the trans.
He didn't feel the drum was absolutely necessary in my trans build for the cost it would add so kept the stock one.
I already bought the locking dipstick from CRT.
I guess now I have to decide which way to go, blanket or shield.
The blanket could probably be installed later but not the shield.
I don't want to have to pull the trans later to install either after the drivetrain is installed.
Thanks for the replies!
I almost went with a blanket, We tried one on Toms car but it would not fit at all!
so we went with a CSR shield , just do your self a favor ane cut that trans.firewall seam out!
As for rear sprags, I have never lost one yet in 727!! I run stock sprags that I bolt in. Same for the drum ! but I don't put 700-1000hp to it either
Rich Can't wait to see the car done!!
  
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Re: At what point do you need a Trans blanket or Shield?
[Re: dennismopar73]
#1293364
08/29/12 08:29 PM
08/29/12 08:29 PM
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Joined: Jan 2007
Posts: 10,139
A Red State
SNK-EYZ
OP
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The 572 Hemi isn't an all out race motor, it's a street motor with 10.5 compression, with a 524/292 hydraulic cam. The only reason it ended up being a 572 rather than a 528 was that I got a deal on a 4.5 inch KB crank. I was actually looking for a 4.15 crank at the time. As far as how much HP it will actually have, who knows. Dan (engine builder) thinks it should be a torque monster. He thinks that one HP per cubic inch isn't unrealistic. When it's on a dyno we'll see what it actually does. Back to the original topic, I'm leaning towards going with the CSI shield. Like this one.  https://www.coperacingtrans.com/product_...50c3d73c6cd4f57
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