Iv'e got a question; I have been working on Mopars for a very long time and every SB I have dealt with had a 3/8 NPT heater hose nipple/fitting on the intake. I was just looking at my stoked 340 with an EFI 6 pack/barrel on it and noticed that the heater hose nipple hole is 1/4 NPT. thinking I was imaging things, I went and looked at another SB intake and removed the nipple and sure enough it was/is 3/8 NPT.
So the question is this, are all 340 6 pack/barrel intakes drilled and tapped 1/4 NPT or is this a mistake or are the new produced Edelbrock SB 6 pack intakes done this way?
Id appreciate any input or thoughts. I have a 1/4 NPT x 3/8 barb fitting which I will use, or if I get real froggy I could drill it and retap it but I really would rather not do that.
