New turbo 350 Sfi case by ati at sema

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oldkimmer said:
They have had the TH400 and 9 inch diff ever since they started making them. Kim
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I looked at a new V10 drag pack several years ago at my local dealership. It had a 9" and a powerglide, no TH400.
 
Duane said:
A 727 case is not Sfi certified. If you watch the video, ati explains
The reasons to develop an Sfi case. Also turbo cars do not launch very hard. We are not talking about the internal parts being able to handle the power, it's the stock case that is limiting.
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I have a buddy that runs a pretty mild twin turbo LS powered Camaro that pulls mid 1.teen 60', so it leaves pretty hard IMO.
 
I seen a company working on a new 727 case for mopars on Facebook can't remember the name but it's the testing phase right now.
 
Duane said:
That doesn't really answer my question so I'll rephrase.
If you were to take your existing ati power glide and change the bell housing to say a ford smallblock, what torque converter would that combination use?.
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I would think they are all built to use a GM style convertor and conversion flexplate. I have both a GM housing with bolts to my adaptor and a big block Mopar bell that bolts directly to my block.
 
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Matts440 said:
Theres a few twin turbos cars on this forum that are making 1000+hp with a 727, mine that maddart had built for the car will be able to handle 1000+hp no problem.
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If you do a search on YouTube there is an interview with Lea Pritchett and extensive viewing of her drag pack challenger.
They talk about why the car has no torqueflite in the car and she specifically says that it's because no one yet makes an Sfi approve case that will handle that horsepower reliably. I am not saying it is not done, but is it safe?
I also have a copy of one of the torqflite performance books that says the 727 limit is about 800 horse. There will be variables of course like car weight etc. I have seen a 68 dart here locally with a turbo modern hemi that ran mid 8,s with an 8 3/4 axle with no breakage. I have also seen a high 11 second normally aspirated big block 440 break the axle caps on the same rear axle. So it all depends. I was told by the owner that turbo cars do not launch as hard and make there big power further down track. Go figure.
Pittsburgh racer us running high nines low 10,s and runs an Sfi case
Cause he thinks he needs it. That ain't no 1,000 horse motor.
 
No doubt and I'm not disagreeing that a sfi case would be better, I was just mentioning after you said that a 727 couldn't handle 1100 hp just in general, maybe you meant just the case and not internally like you said later. And that turbo cars do launch hard look at promods lol I know they have everything sfi and need it. Just looked more into your quotes then needed, it's all good my friend. Would be nice to have a sfi 727 case, hopefully that company posted above get that one approved and marketed and we can have one.
 
Matts440 said:
No doubt and I'm not disagreeing that a sfi case would be better, I was just mentioning after you said that a 727 couldn't handle 1100 hp just in general, maybe you meant just the case and not internally like you said later. And that turbo cars do launch hard look at promods lol I know they have everything sfi and need it. Just looked more into your quotes then needed, it's all good my friend. Would be nice to have a sfi 727 case, hopefully that company posted above get that one approved and marketed and we can have one.
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Yes that is what I meant. Just about every major component in a 727 can be upgraded through the aftermarket to make it stronger.
The only major pice left is the case. For some people it may not even be a strength issue. In certain racing classes the rule say you have to have an Sfi shield or blanket, but in some cars the torqueflite will not fit in the car with a shield on it. An Sfi case would meet the rules requirement and still fit in the car.
 
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