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Forged lightweight rotating assembly on a 383 TPI

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Old 09-01-2011 | 05:25 PM
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Joined: Aug 2011
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Car: 88 T/A
Engine: 5.0 TPI
Transmission: T5
Forged lightweight rotating assembly on a 383 TPI

I'm planning on starting a build of "Atilla's best" by the starting of october... It's a 383 TPI. One day to be boosted for sure I want to invest in a light weight forged rotating assembly and pistons for 1500-2000

I know some people think reducing the weight of the drivetrain is a way of freeing power (not producing it)... and others, that it's a waist of time like some posts about lightweight flywheels including inertia disadvantages to get the vehicle moving... isn't the horsepower and torque produced enough to move the car as soon as the clutch is applied?

What I want is to try and go ahead and make a high/fast torque producing monster along with a properly geared transmission and rear end..

From the pulleys to rims...

The purpose is not to revv high... but do it as fast as possible.

Atilla lists max horsepower at 457@6200 and max torque at 531@4000...

The powerband clearly has been moved up quite a little...

2600 410 203
2800 430 229
3000 475 271
3200 503 306
3400 506 328
3600 514 352
3800 527 381
4000 531 404
4200 524 419
4400 515 431
4600 502 440
4800 487 445
5000 472 449
5200 449 445
5400 432 444
5600 417 445
5800 408 451
6000 400 457
6200 387 457

The large tube runners along with the extrude honed L98 heads and the base, plenum provides enough air for the 383.... I wish I could calculate the Volumetric Efficiency,.. and with what a lot of people would consider a relatively small cam,... (COMP XR264HR10 cam)

I made a wishlist... it comes at around 6000.
I hope to have this done by next summer so that I can start a 327 IROC build with the experience of drivetrain weight reduction for a proper high revving build with a shift-kit automatic

Too much for dreaming about that one

Another thing that should be noted is that the build is almost identical.. except for the lifters I think to the super chevy magazine article that caused much hype in here.. both builds included an electric water pump..

Considering that I live in the wild (pfff) New Mexico at 5312 in Albuquerque... Higher compression is going to be necessary to make the desired power.. before the boost comes later buy a set of dished forged pstons

I can't wait to have a dyno sheet ready for you guys
sorry for the long thread

Last edited by Marchosias; 09-01-2011 at 06:33 PM.
Old 09-01-2011 | 05:34 PM
  #2  
Marchosias's Avatar
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Joined: Aug 2011
Posts: 59
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Car: 88 T/A
Engine: 5.0 TPI
Transmission: T5
Re: Forged lightweight rotating assembly on a 383 TPI

Would machining a regular forged crankshaft for easier winding in the oil density be an overkill?
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