I still have the washers, i just am missing one nut, can i use a regular nut from napa like a grade 5 (all they have around here)

 

If it was me I would go ahead and just find another ARP nut. Especially for a head stud, hardware consistancy is important. The way they are torqued, if one nut is weakest, it will absorb more stress than the rest.

Will it work? Maybe. Is it right? I don't think so.

 

Just call ARP and order the replacement part.

Order Desk & Technical Support: 800.826.3045 or 805.339.2200
Orders Fax Line: 805.650.0742
Special Orders: 805.525.1497
Sales & Marketing: 800.826.3045

 

One time i was building a motor for a friend and they happened to get a nut with no threads. Called ARP and i had a threaded nut at my doorstep the next day.

 

well....


I have to be at richmond wednsday,

gotta have the car runnin, itll take me 2hrs to put the head on and get the car running after i getthe nut


Could i use a stock head bolt with arp headbolts or arp headbolts and one grade 5 napa nut??

 

we have all told you what we think but it seems your stuck on taking a short cut and just waiting for someone on an internet forum to tell you its ok to do.

 

go to a local industrial supply house and get a grade ten nut it should do you fine. Has to be a few places that have them. Or find out what size it is and see if there is a high grade honda nut you can use. That would be better than what you plan to do which will not work. The nut will stretch its threads. You can next day one from arp also which you would get it tuesday unless you can get it ordered online or something tonight.