Technical ARP studs for flathead block

I have a set of ARP studs I would like to use on the 304 flathead using Navarro heads.
I did not buy these specifically for the motor, just happen to have them through trades etc. A number of them are to long on the end that goes into the block. Is it common to have to shorten these or do i have a set not made for the flathead?? Thanks Bill

 

I am no expert by any means. I hope an expert chimes in. I have heard the threads in the block are close tolerance to prevent leakage. I would assume the studs are as well. I would use original Ford studs as my preference. Hi quality ones from Roy Nachiwitz?? would be my second choice. You do not need high strength. You are not torqueing them anywhere near yield. Unknowingly I chased the treads in my block and I am using SS bolts. I have had seepage. Live and learn.

 

Thanks Andy but they are to long. I never use a tap on the threads, just a
proper thread chaser.

 

I have seen flathead stud kits for sale on Speedway that specify you may have to shorten them for your head application. Different brand heads are thicker than others, etc. I know you are talking about the block side, course thread (Usually studs are a fine thread on the head side) and I see no reason why you can't cut them, as long as you can clean the cut end thread up so they don't mess up the block threads.

Reds Headers sells ARP stud kits and bolt kits for flatheads. I have used his bolt kit and I am very happy with it. Top notch ARP quality.

I would assume Red's ARP stud kit is the same ARP kit Edelbrock markets for $700+ less the chrome acorn nuts. I spoke to ARP about the pricey stud kit and they told me it is due to the chrome acorn nuts they manufacture so you don't have to put acorn caps on the nuts.

I personally dig the black ARP bolt head, silouetted against my aluminum heads, with the ARP letters embossed in each bolt head. It shows people you are using quality components.

 

It's kinda better if you shorten the block side. The down side of not doing it is the exposed threads (water side) get crudy and makes them difficult to remove and can damage the block threads. You don't need to get too cute just cut them off, clean them up square on that end. Dope up with Permatex and screw them in. The ARP studs are what I use...