Camshaft Specifications
ManufacturerIsky
Part Number201292
TypeHydraulic flat-tappet
Valve lift 0.505/0.505-inch intake/exhaust
Duration at 0.050244 degrees /244 degrees intake/exhaust
Lobe center108
Dyno Details
Headers 23/4 long tubes
Advance38
Fuel91-octane unleaded
On the Motor
Max torque at rpm481 at 4,100
Max power at rpm439 at 5,400
Average torque 450
Average power386
Nitrous Works Plate 125-Shot
Advance31 degrees
Max torque at rpm663 at 4,400
Max power at rpm579 at 5,200
Average torque 492
Average power421
396ci Buildsheet
Specifications not listed are the same as stock. Except as noted, all dimensions are in inches or fractions thereof. All prices sourced through Larry's Performance.
Displacement396 ci
Bore x Stroke4.030 x 3.8750
Compression 11:1
Rod center-to-center6.00
Piston deck height0.015
Compression height1.062
Chamber volume64cc
Rod-bearing clearance0.0020
Crank endplay0.0060
Piston-ring endgap0.020 top; 0.030, second
Main bearing-cap torque65 lb-ft (moly-lube)
Rod-bolt torque50 lb-ft (moly-lube)
Head-bolt torque65/70 lb-ft (moly-lube)
Motor Only
RPMlb-ftHp
3,200448.2273
3,300450.7283
3,400452.4293
3,500458.6306
3,600466319
3,700472.2333
3,800476.8345
3,900479.1356
4,000478.7365
4,100480.6375
4,200478.1382
4,300477.4391
4,400473.1396
4,500469.8403
4,600465.7408
4,700462.2414
4,800459.2420
4,900453.5423
5,000448.8427
5,100441.4429
5,200437.3433
5,300432.5436
5,400427.3439
5,500416.9437
5,600408.2435
5,700399.4433
5,800390.9432
5,900381.4428

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With Nitrous
RPM lb-ftHp
3,000392.7224
3,100393.9232
3,200396241
3,300401.2252
3,400406.3263
3,500414276
3,600426.5292
3,700441.8311
3,800446.2323
3,900447.4332
4,000452.6345
4,100452.7353
4,200465.4372
4,300482.3395
4,400662.6555
4,500653.3560
4,600644.8565
4,700632.5566
4,800622.6569
4,900613.4572
5,000605.8577
5,100594.4577
5,200585579
5,300572.1577
5,400561577
5,500422.2442
5,600410437
5,700396.9431
5,800384.7425
5,900376.4423
Chevy Hi-Performance