I've searched for a week now with no luck, is there a good place to mount a 12AN bung on each valve cover in a NBS? It just looks awful cramped on them and I don't want to order everything just to find out it doesn't fit. If I can get away with a 10 an I will, but most everyone suggests 12.

 

What is your setup that you feel you need two -12?

 

When I get home I'll post some pics of the -10AN on the gen4 covers. The passenger side needed some fab work

 

End goal is 900hp if possible. Doing my 80e swap now. I'm eyeing an s480 and will end up swapping a forged 5.3 or 6.0 in place of the 4.8. I'm up and running on a 7875 now, but don't want to redo things in the next year or so.

 

I think 10's would do you fine

 

No reasons you should need dual -12’s, if so you have an issue.

 

 

Is one of those in the old oil fill Port? Are those both at the front of the motor? If so I definitely like that setup! Especially since y'all are sure I can run 10an lines.

 

I'll take some more photos tomorrow to hopefully clarify.

First pic is a 10AN bung on the PCV boss, rear of the driver head. That's pretty common

Second pic is a fabrication I did to get a 10AN on the passenger side, back of the VC. It's an aluminum tube, 3/4 OD, 1/2 ID. Drilled the cover, coped the tube, welded to cover and welded bung on. I did a ton of test fits to ensure the coils would still fit

 

If you go this route it’s advised you add baffling by the oil fill as if not it will suck more oil then you want.