Not sure but it may appears that the early 348 covers may have had only the one wire loom mounted in the center along the intake like a truck cover which would have made them left or right that would explain the parts book showing one number but it also shows that number is for 58-61 348/409...
To add to the confusion I picked up a 1965 Chevrolet parts book to cover 1958 -1965 it was supposed to have trucks also but doesn't list specifically 348 or 409 in any trucks
I will attach a copy of the page for all to review
Interesting enough the 62 are left and right not like the earlier 348...
Thanks to Taylor and Russell Racing of the image. The 2018 Showcars cat. still does have a diagram that shows certain covers by application (mostly car) but it is not complete as to all the covers that were produced for the 348/409 applications in all configurations
Is there a list as to how many different configuration that 348/409 valve covers came in other than
58 348 did not have the cut outs for the gasket 59 and up had the cut outs
The 3x2 and 2x4 wire loom where shorter
Different placement of the wire looms
I have seen numerous different designs...
So theses heads could be either 1964 or 1965 because the year is not noted
the block also is puzzling could that be 5th day of the year being 1965 since the 656 block was only 65 and the build date 0122 ?
Looking for info on the date codes on a 348/409 specifically 65 409 with 2 digit date code on the heads and a single date code on the block
Heads 8 4 and 8 7 --These are 817 Heads
Block 5 -- cast part # 656 build date 0122 (stamped on front right side block)
When I look up this info...
If Anybody else happens to be looking for fenderwell headers for 58-64 348/409 contact Greg at ACP headers (Formerly Stahl)
I was hoping to locate an older set but was put on to Greg (closest thing to old school that one could hope for)
Greg Did a great job willing to help in anyway with my...
Does anyone know who may supply these two fittings?
I believe that the fitting for the heater hose may be a standard threaded hose fitting but the bypass appears to be a press fit
The 2x4 Aluminum intake I have is not threaded for the bypass hose fitting.
I also have an early 348...