New percy's header bolts

1madgumby

New member
Anyone use these header bolts? There pretty new. I have ATR headers what lenght should I use? 1" or 3/4"?

Thanks..
 

ghettosled

SYTY SUPERSTORE
Re: New percy's header bolts

3/4" but you will have a hard time getting the allen into most of the bolts as the tubes will be in the way. I prefer a 5/16" wrench 6 point ARP, and just check them occasionally.
 

Try Me

New member
Re: New percy's header bolts

I bought these and used them on my atrs and had no problem getting them all tight. The are magical, thats the best way to describe them. I had the 6 point arps and they are easy to get to but it doesnt take but one to get loose and then youve got a header gasket leak that doesnt completely go away with tightening the bolt. I ran these for almost 6000 miles (including the 3000 miles i drove on the 2005 Hot Rod Power Tour) and NEVER had to touch them, and NEVER had any header gasket leaks! Worth the money for sure, especially if your truck is mostly street driven, its just one less thing you have to check every 3rd or 4th time out.
 
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