TOMEI POWERED 280's Camshaft (EVO 8)

MANUFACTURER: TOMEI POWERED ENGINE MODEL: 4G63 EVO 8 CAMSHAFT PN# (INTAKE): 1453280115 CAMSHAFT PN# (EXHAUST):1455280115 SPEC CARD# : GSC-6008S3

INFO

Stepping up from the 272 pack, the TOMEI 280 camshaft set offers an extremely high lift of 11.5mm and peak power at 8,400 RPM. Maximum horsepower checked in right above the 590 figure, resulting in a 30 percent increase over the factory cams. This set of high-duration, high-lift camshafts also induced a very lopey idle. From 5,000 to 8,500 RPM, the TOMEI 280s delivered a significant increase in power. Compared to the TOMEI 270s, these 280s trade low-end power below 5,000 RPM for peak power near redline. This set of Tomei camshafts requires upgraded valve springs.

RUNDOWN

591.60 WHP @ 8,400 RPM 417.13 LB-FT @ 6,600 RPM

Peak power checked in at 8,400 RPM, with the power curve remaining flat all the way to redline. Peak boost was reached at about 4,600 RPM. A flat torque band from 5,000 to 8,000 RPM delivered a peak torque figure of just over 415 lb-ft. Peak torque was achieved at 6,600 RPM. The highest VE values were recorded between 6,000 and 6,500 RPM. VE figures registered higher than the factory units from 4,000 RPM to the top.