727 question

I called a local transmission shop today. He said that it is uncommon for Hp to be less than torque? I had my engine on a Dyno. It's a 440. I put out 443 hp and 512 torque. Can anyone explain to me if this is abnormal? And why he says that? He did say it was normal for trucks? I am confused now. Can a transmission be built for that ? It's going in a Challenger. 323 gears.

An engine can be built to make more torque than hp or more hp than torque. I work on a 85 hp wolverine diesel. It put out a billion lb/ft of torque. Three cylinders about 1 foot in diameter. Trucks like torque. Not unusual for a performance car engine to make a bit more torque than hp

A converter can be built to take advantage of how and where the engine makes power. The dyno curve would be nice to provide to the converter company and all the other info about the car, you will get a converter almost optimal to the combo.

Thank you.

That is good to know. Thank you.

The technical designation of the 727 is 36RH. The 6 means it is supposed to handle 600 ft. lbs. of torque.

it is very common for low compression pump gas Mopar BB stroker motors under 10.5 to 1 to make more torque than HP
Why they do that below 10.5 to 1 with iron and aluminum heads is still a mystery to me

You look at the numbers for a lot of gas motors, the torque and horse power are "about" the same. When torque numbers start to get way above the HP it indicates a failure to rev. That can be a lot of things, but intake/heads/cam can cause that. When the hp is way above torque, that is an engine that likes to rev. F1 motors run to 20K rpm +, have 200 ft pounds of torque, yet make 750 hp.

Look how lopsided diesels are, 500 torque, 300 hp. They don't want to rev.

Until you exceed 5,252 RPM, you're going to be making more torque than horsepower.

Horsepower = Torque x RPM / 5,252.

This is incorrect. The second digit is an arbitrary number associated with it's torque rating. The 6 will handle more than a 4 but it is not a specific torque rating.

Not uncommon at all, unless compared to the newer (and smaller engines.) The Buick 455 Stage 1 was 360 HP @ 4600 PRM / 510 ft/lbs @ 2800 RPM. The Standard 440 HP engine is 375 HP @ 4600 RPM / 480 ft/lbs @ 3200 RPM
The new 6.7 Cummins Diesel is 400 HP / 1,000 ft/lbs.

A 727 setup like the performance versions (4 front clutches, TF-2 shift Kit) will handle the power even with stock type clutches if built right.

All those engines you listed fail to make power at RPM hence the torque lopsided to the HP. Look at the ports/valves on a 440.

Compare those 440 ports to a 350 chevy head sometime and you can see why that 350 can make power per cube at revs.