I got a set of ARP main studs and main support(girdle) for my 347 and the stud right at the oil pump hits the pump.(stud is to long.) Is there a cure . and why does this happen. I cant be the only one with this? ....can i cut it? All the studs are the same length as well.
I grinded mine down, also grinded the pump a little to, also had to grind the nut, I also seen some pics where they put a 12 point nut there, it looks smaller then the 6 point nuts. Or u can use the regular bolt with no problems.
with a main girdle is that a absolute normal problem.
I had the same problem, but with main bolts instead of main
studs. Don´t grind the studs !! Only the pump.
I have a Canton girdle on my 418w and they actually tell you that you may need to grind on the pump to make it fit (if you use a high-volume pump).
I had to take metal off the area that Markus showed above, and I had to grind down the gussets on the side of the mounting arm. Also, I didn't install the ARP washer on that particular bolt.
Apparently, this is a common issue, as my friend had to grind down the top of his bolt to make a std-volume pump work with his canton girdle on his 306.
As long as all the threads are fully engaged in the nut you can cut off the end of the stud. Any threads that stick out above the nut are not really needed.