Idle lope was noticeably more pronounced and vacuum measured 12 in-hg at 1,000 rpm. Part Number: SUM-K1103 4. This move in the torque curve was most noticeable in the lower end of the rev range, with substantial torque losses below 4,000 rpm. Cam and Lifters, Hydraulic Flat Tappet, Advertised Duration 288/298, Lift. The stock exhaust manifolds were ditched in favor of a set of Hooker headers. Up top, we now recorded 599 hp at 6,100 rpm, gaining in both output and usable rpm, however, the bump of 12 hp up top shaved 8 lb-ft from peak torque, and shifted the torque peak higher up the rev range. Run with a stock cam and two-barrel Rochester carb, the mild 350 produced 246 hp and 364 lb-ft of torque. The dyno numbers showed a textbook example of what is gained and what is lost as the cam timing is increased. We expected the increase in lift and duration to tap into more of the excellent high-lift airflow of the AFR heads, and bump top end power.
The upsized cam featured a significant jump in lift, shoving the valves to well over the. We tore the engine down as it sat on the dyno for the cam change, retaining everything else exactly as it was in our previous combination. 050, a neighborhood that is popular with today's street performance enthusiasts.
Our next step in cam size moved up to 234/242 degrees duration at.
0 kommentar(er)
