Quadrajet id codes

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Listed here are the ID codes for the quadrajet carburettor and jet sizes, metering rods and hanger sizes

601 = Pre-Pollution-HT to Early HJ - Red Motor

602 = Semi-Pollution - Late HJ to VB - Red Motor

603 = Post-Pollution - WB/VC to VK(?) - Blue Motor/black motor

Also the 253 quadrajet were jetted differently to the 308 quaddies.

jet sizes
hanger sizes
metering rods