Exhaust manifold to Y-pipe studs/bolts, are they really brass?

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Exhaust manifold to Y-pipe studs/bolts, are they really brass?

reamer
Trying to get the studs out of the left side, very corroded down so had to grind the nuts off, but the studs snapped off in the cast iron, even after getting the cast red hot, But the nut/bolt combination on the right side are Brass colored, are they really brass?

I guess I have to drill and tap the left side....

Left side has the add-on flap extension...
1986 F-150 Flareside 4x4, 351, 4-v, ZF5 speed. AC, Cruise, Tilt, Slider, Digital clock, Radio, Lariat seat, Pwr doors/locks
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Re: Exhaust manifold to Y-pipe studs/bolts, are they really brass?

FuzzFace2
I have seen brass nuts but not studs.
Dave ----
81 F100 flare side 300 six/T18 project
http://cars.grantskingdom1.com/index.php/1980-Ford-F100?page=1
81 F100 style side 300 six/SROD parts truck
http://cars.grantskingdom1.com/index.php/1981-Ford-F100
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Re: Exhaust manifold to Y-pipe studs/bolts, are they really brass?

Steve83
In reply to this post by reamer
After 33 years & who-knows-how-many owners, you could find anything.

Instead of heating the manifold, try hammering on the side of the casting where the bolts are.  It not only loosens the rust; it also stretches the Iron slightly, loosening the stud.
Walk softly and carry a BIG SIX!!!
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Memphis, TN, USA, Earth, Milky Way
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Re: Exhaust manifold to Y-pipe studs/bolts, are they really brass?

Rembrant
In reply to this post by reamer
reamer wrote

Left side has the add-on flap extension...
Ron,

I believe I still have the flap valve from the left side of my exhaust, and it's a low mileage piece...only 30k on it. I'll check my parts bin at work and see if it's still there. I may have tossed it, but if it's still there you're welcome to it as a spare (if you don't already have 1 or 2...lol).
1984 F150 4X2 Flareside. Mild 302 w/GT40 heads, BBK headers, Holley 4bbl, XE256H Comp Cam, M5R2 5spd swap, Magnaflow full duals. Fresh Medium Blue Metallic in August 2019.