Posted By: SNK-EYZ
At what point do you need a Trans blanket or Shield? - 08/29/12 05:33 AM
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.
Posted By: SNK-EYZ
Re: At what point do you need a Trans blanket or Shield? - 08/29/12 06:03 AM
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?
Posted By: Dragula
Re: At what point do you need a Trans blanket or Shield? - 08/29/12 11:01 AM
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.
Posted By: MR_P_BODY
Re: At what point do you need a Trans blanket or Shield? - 08/29/12 01:11 PM
A production trans is low band apply(let off the gas
and the engine will slow it down)
Posted By: an8sec70cuda
Re: At what point do you need a Trans blanket or Shield? - 08/29/12 02:04 PM
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.
Posted By: rickseeman
Re: At what point do you need a Trans blanket or Shield? - 08/29/12 02:15 PM
Click on this link, go down a few paragraphs, info on when yoiu need a trans shield.
http://www.centervilledragway.com/Rules%20for%20Racers.htm
Posted By: DemonDust
Re: At what point do you need a Trans blanket or Shield? - 08/29/12 03:41 PM
Or just run a 904 you won't have that problem.
Posted By: SNK-EYZ
Re: At what point do you need a Trans blanket or Shield? - 08/29/12 08:58 PM
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!
Posted By: dmking
Re: At what point do you need a Trans blanket or Shield? - 08/29/12 11:09 PM
i got what you need to decide to run a shield and a front drum.
numidia last year before i split my block a cornet rolled the sprag and dove out of the car bloody foot fire and oil everyware.
he had a blanket.
it did not protect his foot.
i now have a billet steel drum in the front.
Posted By: SNK-EYZ
Re: At what point do you need a Trans blanket or Shield? - 08/30/12 12:29 AM
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
Posted By: Todd
Re: At what point do you need a Trans blanket or Shield? - 08/30/12 01:00 AM
That's the one I have. Had to trim the ears off the bell housing. Other that the fit is pretty good.
Posted By: Brandon70cuda
Re: At what point do you need a Trans blanket or Shield? - 08/30/12 07:37 PM
As others have said when you value your feet more then the shield or blanket costs is when it's time for one.
Posted By: 67Satty
Re: At what point do you need a Trans blanket or Shield? - 08/30/12 08:40 PM
Just throwing this out there for discussion.
I grew up in Minnesota and the preferred method for getting yourself out of a snowbank or patch of deep snow when you were stuck was to "rock" the car back and forth. You did this by gunning the car in reverse, then jamming into drive or first and gunning it, then jamming it back into reverse and repeating over and over until you finally built up enough momentum to get yourself up and over the snow obstacle and out. I think owner's manuals back then even told you how to do it this way. Lots of tire spinning involved here, probably more brutal than any burnout box. Never heard of anyone exploding their 727 or hurting them in any other way doing this.
So was this because they were stock trans and all had low-band apply? Just curious.
Posted By: hemi-itis
Re: At what point do you need a Trans blanket or Shield? - 08/30/12 11:27 PM
