MANUFACTURER: HKS Power
ENGINE MODEL: 4G63 EVO 8
CAMSHAFT PN# (INTAKE): 2202-AM003
CAMSHAFT PN# (EXHAUST): 22002-AM004
SPEC CARD# (INTAKE): N/A
SPEC CARD# (EXHAUST): N/A
INTAKE | EXHAUST | |
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CAM TIMING EVENTS | ||
Centerline | 110° | 110° |
Valve Opening @ 1.0mm | 7.3° ATDC | 38.9° BBDC |
Valve Opening @ 0.050″ | 10.6° ATDC | 35.6° BBDC |
Valve Closing @ 1.0mm | 39.4° ABDC | 7.3° BTDC |
Valve Closing @ 0.050″ | 35.8° ABDC | 10.9° BTDC |
DURATION | ||
Actual Duration @ 1.0mm | 212.1° | 211.6° |
Actual Duration @ 0.050″ | 205.1° | 204.7° |
Claimed Duration @ 1.0mm | 214.0° | 214.0° |
PEAK LIFT | ||
Peak Valve Lift | 10.8mm (0.425″) | 10.2mm (0.401″) |
Peak Cam Lift | 6.2mm (0.245″) | 5.9mm (0.232″) |
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INFO
Since its inception, this 272-degree camshaft set from HKS set the bar for almost all aftermarket EVO 8 camshafts. A peak power increase on the order of nearly 20 percent meant that significant power gains could be had with a simple camshaft swap. A relatively mild lift meant that the HKS 272s maintained a smooth idle with little noticeable lope. Although the HKS 272s made less power than the factory units from 3,000 to 4,000 RPM, the power increases dramatically from 4,500 RPM to redline. Valve spring upgrade is not required by HKS, but we recommend it.
RUNDOWN
538.25 WHP @ 8,300 RPM
403.51 LB-FT @ 5,700 RPM
Peak power checked in at 8,300 RPM, as the power curve flattened out from 7,000 to 8,500 RPM. Peak boost was reached at roughly 4,900 RPM. The torque curve remains flat from 4,500 to 7,000 RPM and then drops off noticeably on the top end. Maximum torque of just over 400 lb-ft was reached at 5,700 RPM. Highest VE values were recorded at 6,500 RPM, cresting the 100.0 mark. Superior VE values over factory were recorded throughout the RPM range except for a slight drop at 3,500 RPM.
HORSEPOWER |
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RPM/WHP | FACTORY | HKS 272 | GAIN/(LOSS) |
2500 | 49.66 | 51.04 | 1.38 |
3000 | 82.45 | 68.89 | (13.56) |
3500 | 112.31 | 106.32 | (5.99) |
4000 | 166.27 | 158.63 | (7.64) |
4500 | 281.42 | 297.03 | 15.61 |
5000 | 323.28 | 355.60 | 32.32 |
5500 | 371.95 | 408.86 | 36.91 |
6000 | 399.03 | 455.70 | 56.67 |
6500 | 415.72 | 482.53 | 66.81 |
7000 | 451.50 | 505.11 | 53.61 |
7500 | N/A | 516.21 | N/A |
8000 | N/A | 513.62 | N/A |
8500 | N/A | 519.99 | N/A |
VOLUMETRIC EFFICIENCY |
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RPM/% | FACTORY VE | HKS 272 | |
2500 | 80.5 | 88.7 | |
3000 | 88.2 | 95.3 | |
3500 | 98.6 | 96.4 | |
4000 | 85.9 | 97.0 | |
4500 | 85.0 | 96.8 | |
5000 | 89.1 | 96.8 | |
5500 | 92.1 | 97.8 | |
6000 | 88.7 | 99.0 | |
6500 | 88.8 | 100.0 | |
7000 | 84.9 | 97.3 | |
7500 | N/A | 92.1 | |
8000 | N/A | 90.1 | |
8500 | N/A | 84.2 |