The first intake number looks like its from an L82.
Years Â* Â*Casting CID bbls Material Â*Carb Â* Â* Â* Â* Â* Application
1974-76 340261 350 4 Â* Â* Â* Â*iron Â* Â* Q-jet Â* Â* Â*A B F X/160,185,195,245,250HP
It looks like its the intake from a 4 bbl 350 from 74-76, originally with a q-jet carb.
the 2nd number...google gives me nothing.
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Matt

B18B1 FTW
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