head bolt ?

[Raist103]

1. are the stock head bolts torque to yield or can you reuse them?

2. are the arp vortec head bolts the same as stock heads? can i use vortec head bolts on a stock head.

i searched and could not find any answers.

don

 

[Sy Guy 0024]

Re: head bolt ?

#2 My sy came with stock heads w/ARPs. I re-used them when I converted to Vortecs. So they worked on both stock and vortecs. I think that's what you were asking?

 

[Raist103]

Re: head bolt ?

i am going from vortecs to stock and have the arps for the vortecs but if you reused them from stock to vortec i dont see why they would not work the other way.

thanks

 

[DynaGlide]

Re: head bolt ?

I think I know what you're asking. I think that the ARP hardware is not made to stretch, or yield, therefore rendering them unuseable again. I think they retain their original shape. You should be fine using them again.

 

[Raist103]

Re: head bolt ?

yeah i wondering about the stock head bolts stretching i know the arp's dont stretch.

thanks though

 

[Don W.]

Re: head bolt ?

They all stretch. For example it's the correct way to tighten a rod bolt even ARP's, measure the stretch. Kinda hard with a head bolt.

 

[James Thomas]

Re: head bolt ?

Arp bolts can be reused but I don't do it more than twice (just me). Go with studs, gete better clamping and seal = don't worry about it.

_________
James

 

[Raist103]

Re: head bolt ?

you guys know the torque pattern? and amounts? i am thinking 60 then 80 the 115?

 

[Tooky]

Re: head bolt ?

you guys know the torque pattern? and amounts? i am thinking 60 then 80 the 115?

Gosh no! IIRC, mine call for 65#.

Check the service manual or chiltons for the head bolt pattern, someone has it posted online too but I am not sure where. When it comes to the torque value, the best I can determine is you need to follow the recommendations of the head bolt manufacturer. In your case ARP will make the call and it will likely be LESS torque than what the stock recommends, because of ARP's recommended moly thread lubricant. My instructions explained that it's all about stretching the bolt to the correct amount, not too little and not overstretched either.

Do you still have the little sheet that came with your head bolts? I'm pretty sure the values are different for each kit (heads, studs, High Performance vs. Pro Series, etc.)

HTH,