675hp AOD need help with Torque converter

675hp AOD need help with Torque converter

Joined: February 5th, 2009, 12:05 am

June 9th, 2012, 1:30 am #1

I have a 527cid big block ford peak torque 673 @4400 and 670-675hp 5000-6000rpm. Going in a street/strip car 3000lbs. running a beefed up non lockup AOD through 3.7's on the rear. Top trans guy recommended a 2600-2800 stall converter and Im happy with that, but am now wondering 1. how much slip I am going to get in highway cruise at 70mph @2100? 2. whether that is going to cause heat problems; 3. whether it will cause fuel consumption problems. Like what ballpark mpg approx? I dont care about economy I have one of them, I am trying to work out what fuel tank size is needed to get between gas stations (serious). Would appreciate any comments from those who have similar.
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Joined: January 1st, 2004, 2:15 am

June 10th, 2012, 4:46 am #2

I personally use Precision torque converters. The "Stallion". I would contact them about this particular application.
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June 10th, 2012, 1:27 pm #3

I have a 527cid big block ford peak torque 673 @4400 and 670-675hp 5000-6000rpm. Going in a street/strip car 3000lbs. running a beefed up non lockup AOD through 3.7's on the rear. Top trans guy recommended a 2600-2800 stall converter and Im happy with that, but am now wondering 1. how much slip I am going to get in highway cruise at 70mph @2100? 2. whether that is going to cause heat problems; 3. whether it will cause fuel consumption problems. Like what ballpark mpg approx? I dont care about economy I have one of them, I am trying to work out what fuel tank size is needed to get between gas stations (serious). Would appreciate any comments from those who have similar.
20 gallon would get you there /nm
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Joined: February 5th, 2009, 12:05 am

June 10th, 2012, 1:59 pm #4

I personally use Precision torque converters. The "Stallion". I would contact them about this particular application.
thanks buddy, already have a top notch builder, im really looking for actual perspective/experience on how these babies run...
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Joined: February 5th, 2009, 12:05 am

June 10th, 2012, 2:03 pm #5

20 gallon would get you there /nm
serious, like no-one can tell me even ballpark what a 527 thru an AOD with 3.7s is going to MPG?
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