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383 Intake Manifold Comparison
#2205968 ..... {1963 thru 1967 Casting} .................... 14.17 ..... 98.04
#2951666-1 .. {late-1970 and 1971 Casting} .............. 14.06 ..... 99.43
#2806301 .... {1968 and 1969 Casting} ...................... 14.04 ..... 99.11
Edelbrock Performer {#2186} .................................... 14.01 ..... 99.58
Mopar M1 Dual-Plane {#4529117} ............................. 13.99 ..... 100.02
Weiand Action Plus {#8008} ...................................... 13.97 ..... 99.78
Edelbrock {DP-4B} ................................................... 13.93 ..... 100.12