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Erson Cams have developed the FIRST 4-7 Swap firing order Hydraulic Roller Cam. Newest valve train designs bring the latest in cam technology to the street with its Hi-Rev/Hi-Tech Series of hyraulic roller camshafts. Reap the benefits of faster acceleration, smoother performance and better fuel distribution. These kits for 65-96 396-454 cid big block chevys include 4-7 swap cam, Hi-Rev lifters, matched valve springs, steel retainers, valve locks and dual row timing set. Pro Race Hydraulic Roller Lifters are billet alloy steel heat-treated for unparalled wear resistance.
Eaton style oil metering design for precision high rpm oil control.
High strength .750 dia alloy roller wheels for correct cam geometry
Full 360 degree wide contact area on camshaft.
Through heat-treated steel axles are the strongest in the business.
Tie-bars are heat-treated stainless steel with steel buttons precision formed for permanent attachment. Strong mid-range power needs at least 9.5:1 compression, dual plane manifold, free flowing exhaust and at least 2000 rpm converter for best performance. Will have slightly lopey idle. - RPM Range 2500-5500
- Duration @.050 226/234 deg Int/exh
- Lift w/1.7 rocker - .604 in
- Lobe Center 108 deg
- Advance - 0 deg
- Valve Lash - .000 in
- Dual spring# 3450 1.460 dia, 120lb @ 1.850 in
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Cams / Lifters /Timing Sets
