[lankster35]

I have been told i should use locking header bolts for my 454. I have Heddman Elite headers with a flange that is 3/8" thick and the threads on my heads seem to be 3/8" diameter and 1/2" deep. I see both 3/4" and 1" length so I guess I need the 1" ers. 3/4" seems too short. I have only found the stage-8 locking bolts listed on Jegs. Any suggestions on what I should use and does the 1" length sound right?

I appreciate all the help I get on this board even if my questions seem relatively simple. OCD....... thx -Bob

 

[GuysMonteSS]

I cant comment on locking bolts,but after 2 or 3 retightening's,regular header bolts dont usually come loose.
Guy

 

[marks412]

I use studs with fine threads on the outer end, and a serated flange nut. Never an issue after doing this.

 

[cream]

i use grade 8 bolts with lock washers they never get looe but i only use the lock washers once

 

[OldCrLvr]

I don't have an oppinion on your length but I have the Stage8's on my SBC and we put them on my Pop's SBC as well. From now on all of my engines will have them.

 

[Bob West]

I cant comment on locking bolts,but after 2 or 3 retightening's,regular header bolts dont usually come loose.
Guy

x2:thumbsup:

 

[crazydavey]

mine have never come loose at all...they do have header bolt lockwashers if you have an issue...

 

[fatrat70]

Like the others have said, retorque a time or two and never a problem.

 

[lankster35]

thanks - One inch it is and no locking nuts....I will just use lock washers if needed and re torque. Thanks for the help.