This message is a reply to an archived post by pomester on April 23, 2018 at 18:39:43.
The original subject was "Re: TO30 head studs".

I have been looking everywhere for head studs for my TO30! Did you use a kit from ARP or have to call them and provide specs? Please help!!

Hi Blake -
I emailed ARP and described what I needed. As I recall, the short ones are a bit long, but not a big deal. The long ones were too short to use the provided washers. The provided nuts are flanged so the washers are somewhat superfluous. Were I doing it again I'd see what the next longer length is available and go with that as long as they aren't unreasonably too long.
ARP provided their closest length stock studs for the application. Quality is outstanding. I was working without much money and chafed a bit at the added expense, but well worth it. Realistically didn't have much choice, stock studs were worn out.
Here's a c/p of some of the communication from 2018 - obviously prices may have changed.
QUESTION:

I need to replace the head securing studs on a 1952 TO30 Ferguson tractor. There are two lengths, (8 ) 4-11/16" and (5) 1-7/8". All are 7/16" with NF on one end and NC on the other. Would you quote me on providing these pieces along with appropriate nuts and flat washers?

thanks, David

David,

Here are the part numbers we have close...

AP2.090-1SB (7/16" stud, 2.090" overall, .750" coarse with 1.000" of fine thread) $4.30 each

AP4.600-1SB (7/16" stud, 4.600" overall, .750" coarse with 1.000" of fine thread) $6.25 each

200-8510 (7/16 washer with .812" o/d) $1.00 each

200-8605 (hex nut with 5/8" wrenching) $0.82 each

300-8303 (12 pt nut with 1/2" wrenching) $2.30 each

Regards,

Zac Kimball

Automotive Racing Products

(805) 339-2200 ext. 206