Header bolts

[Matt49]

Anybody ever tried using studs instead of bolts?
Just seems like it would make it easier to line everything up when putting them on.

[dirtracerl77]

Normally the head of a header bolt is much smaller than a nut would be for a stud. There is not enough room on all the tubes to use a 9/16.

[Matt49]

Yeah...you're right. And even if it would work it would be next to impossible to get a turn on a wrench. Oh well...

[collateralDamage]

i like using header bolts with a 5/16" head - like schoenfeld 3006-12.

[parocket]

We use a combinations of studs and bolts, I think 1 bolt on each side otherwise studs. Easier to tighen and makes install simple.

[drtrkr25rjr]

ARP sells 12pt 3/8 nut that only takes a 7/16 socket or wrench.

[zeroracing]

I use a combo, makes it easier.

[75fireman]

Stage 8 locking fasteners Make a 12 point low profile with locks very easy to use and when you use the locks they never come loose

[Lizardracing]

Allen headed cap screws from the local hardware store.
I made tool just for this reason. I used a ball type 3/8 allen wrench and cut off the short side 'L' leg. Then welded a 3/8 drive socket on the Allen wrench. It could have been used as is but I went a step further and machined a diamond knurl into the shank for grip when starting the bolts with one hand and holding the header with the other.

[hites2204]

I use the 5/16 head bolts and put red high temp silicone on the threads, never loosened up more than a half turn all season.