Proper header installation etiquette

[sk7500]

As I'm about to install ou exhaust system I realize I have a few questions I need answered. Is there a gasket that goes between the headers and the ls6 head? Is there anything special I should know about putting steel bolts into aluminum heads? Anti-seize, dry, lock washers?
I figured if I could get the answers anywhere, it's here.

Thanks
Steve

[michael everson]

Yes. There should be a gasket. I would use anti seize.
Mike

[crash]

The factory setup uses a metal gasket and some type of thread locker on the header bolts. I don't know what that thread locker is that can handle that type of heat, but I have used High Temp orange or red silicone to seal headers and to lubricate header bolts with great results on race engines. You can use it in place of the gaskets too. Just a very thin layer will do the trick.

[sk7500]

Thanks guys. Put the exhaust on and started it today. It's amazing what just hearing the motor run can do for enthusiasm.

[afourcault]

working in the aviation indiustry i can say with certanty that you want to put a barrier between the steel and the alum or you will risk corrosion. just food for thought.

[VD2021]

Thanks guys. Put the exhaust on and started it today. It's amazing what just hearing the motor run can do for enthusiasm.

I agree. Taking it around the neighborhood helps me too. That's why I've put about 40 miles on my build so far.

[LCD Gauges]

It's a good idea to cycle torque on all of the bolts after putting some heat through the pipes/flange.

Torque from the centre out to each end, and torque the bolts in steps (not full torque) to improve sealing.

Congrats on getting to this stage, I'm almost there myself!

[sk7500]

Good advice. Thank you


It's a good idea to cycle torque on all of the bolts after putting some heat through the pipes/flange.

Torque from the centre out to each end, and torque the bolts in steps (not full torque) to improve sealing.

Congrats on getting to this stage, I'm almost there myself!