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These RPM Air-Gap manifolds are a dual-plane design that are tuned for excellent throttle response from 1500 to 6500 rpm
500" (292mm)
equally spaced orifices to improve fuel metering from idle to the main circuit
Requires the use of a bypass style regulator and return line
25 Turbocharger 1600HP
LS2 Asymmetrical FSR Flat Top Forged Piston J311978 2RZ These RPM Air-Gap manifolds areLS 4. 010" PISTON 5cc 4. 000 ST 6. 125" ROD 1. 115 CH ASYMMETRIC JE SRP 311978 J311978 11978 GM LS Flat Top Our brand new Asymmetrical FSR (Forged Side Relief) forging design allows for the use of the most popular stroke and rod combinations while eliminating reluctor wheel clearance problems. Asymmetrical forging design maintains a larger skirt on the heavily stressed major thrust side, while reducing friction with a smaller skirt on the minor thrust
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