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Fuel pump CHevrolet v8

3K views 6 replies 3 participants last post by  MouseFink 
#1 ·
Do all stock Chevrolet mechanical fuel pumps have the same size thread for the inlet and outlet Line fittings? What is the the thread size?
 
#2 ·
No, there are different size line possibilities depending on the application and a lot have a smaller line on the output side. i have seen several different configurations over the years. A lot of pumps have fittings that can be changed but I have also seen some that at least one side cant.
 
#5 ·
Must I use an 3/8" line to 1/4" npt fuel line pump inlet adapter ? My 62 Chevrolet 327 CI / 300 HP has a 3/8" fuel line yet it uses the same fuel pump as a 62Chevy with a 283 CI or a 250 HP / 327 CI engine that is equipped with a 5/16" fuel line. Those fuel pumps have 1/4" npt inlets and outlets.
 
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