1000HP 7.3 powerstroke

[FionaThe02PSD]

Originally Posted by ABOBB

The issue with splitting blocks has more to do with cylinder pressures and timing than anything else. It's not a block weakness factor.

Ben Miller's Double Overtime has hit over 1600 on an engine dyno. Good crankcase girdle, and some large studs on both the crank and heads kept that all together, and no problems splitting the block.

If you put a good quality girdle on (WOP) and fill the block then they are stable but I dissagree that the stock blocks are not without weaknesses. This engine was at about 400HP with PMR's.

Congrats Blowby! That Zane guy knows his stuff!

Attached Images

	1st cracked 73L A.jpg (75.2 KB, 22 views)
	1st cracked 73L B.jpg (77.0 KB, 20 views)
	1st cracked 73L.jpg (79.2 KB, 22 views)

[Dave]

Originally Posted by FionaThe02PSD

If you put a good quality girdle on (WOP) and fill the block then they are stable but I dissagree that the stock blocks are not without weaknesses. This engine was at about 400HP with PMR's.

Congrats Blowby! That Zane guy knows his stuff!

I cant remember who tuned your old truck Dan?

[FionaThe02PSD]

I don't want to start that fight... Just saying that the blocks do have issues, look where the cracks start and follow.

[Dave]

Originally Posted by FionaThe02PSD

I don't want to start that fight... Just saying that the blocks do have issues, look where the cracks start and follow.

[somebodyelse5]

thats so awesome. im glad were getting some 7.3s to throw down some power

love hearing that truck, sounds like a jet haha.

[ABOBB]

Originally Posted by Marty

It's probably closer to 1600 or 1700 ft/lbs.



Ben told me at Scheids he has split a few blocks. Then again he's well beyond 1600 HP now, more like almost double that.

They have damaged some blocks in the process of reaching the point they are at, but nothing so spectacular as the blown into three pieces carnage that made the rounds on the forums a while back in a street truck.

Originally Posted by FionaThe02PSD

If you put a good quality girdle on (WOP) and fill the block then they are stable but I dissagree that the stock blocks are not without weaknesses. This engine was at about 400HP with PMR's.

Congrats Blowby! That Zane guy knows his stuff!

If you ever get a chance to see the girdle in Double Overtime, you'll realize that the WOP girdle is little more than spandex in comparison!! All depends on the application, though, and the WOP unit is a very well made product.

[cndrm]

I don't know. Many find it so hard to believe the 7.3 can put out that much power. Am I the only one not surprised? These motors have 2 more cylinders than a Cummins, and somewhere around 84 more cubic inches than the Cummins. Just the basic laws of motors tell me that there's a lot more potential in these motors than in the Cummins.

I don't know. I'm not bashin the Cummins. They're good motors. But I love my 7.3L, and I'm not too surprised that they're getting this kind of power out of them. I think the biggest hinderance to getting this kind of power out of a PSD, is the cost. But, then again, when International first designed the 7.3L motor, some 21 years ago, I'm sure they weren't quite thinking of coaxing 1,000+ hp out of them.

All I gotta say is, let's hear it for the good ole 7.3.

mike

[strokerguy]

damn thats a sweet tuck

[ABOBB]

Originally Posted by cndrm

I don't know. Many find it so hard to believe the 7.3 can put out that much power. Am I the only one not surprised? These motors have 2 more cylinders than a Cummins, and somewhere around 84 more cubic inches than the Cummins. Just the basic laws of motors tell me that there's a lot more potential in these motors than in the Cummins.

I don't know. I'm not bashin the Cummins. They're good motors. But I love my 7.3L, and I'm not too surprised that they're getting this kind of power out of them. I think the biggest hinderance to getting this kind of power out of a PSD, is the cost. But, then again, when International first designed the 7.3L motor, some 21 years ago, I'm sure they weren't quite thinking of coaxing 1,000+ hp out of them.

All I gotta say is, let's hear it for the good ole 7.3.

mike

Never been anyt doubt in my mind that the potential has always been there. At 444 cui, the 7.3 is the largest diesel engine put in one of these trucks by any manufacturer.

I do however see some hindrances that have caused the progress to higher numbers to be slowed. One is the HEUI injection system. Granted, the 6.0s have made it happen, but with superior injector design. A second hindrance that I see is the intakes and heads. Haven't dug in very deep, but they appear to be somewhat restrictive to me. All the fuel in the world is great, but without oxygen it's worthless.

I wish I had a pile of money... got some killer ideas floating around in my head that I would love to try.

[Powersmokein]

is that a twin turbo 7.3L ???