Thorley 399Y-3 Headers, Magnaflow muffler
 

More stuff off the '91 Suburban.

This time a set of Thorley 399Y headers (I think it's the 399Y-3 the difference between the 1, 2, 3 is just the tailpipe to the muffler), cataloged for '86-91 big-block 2WD 3/4 and 1-ton Subs, crew cabs, etc. and '86-87 trucks (the Y-pipe is set up for a single 3in exhaust, and that's how I ran it, but I suppose you could run dual exhausts down the left side...) About ten years old. Minor rust pitting, the headers and the Y-pipe were blasted and ceramic-coated about three years ago; some surface rust is creeping back through the coating especially on the Y-pipe as seen in the pics but the metal is sound. They're a nice piece of gear.

The Y-pipe has had a second O2-sensor bung added (for a wideband tuning sensor.) The second primary on the right side has a -10AN weld bung near the head flange, this was used for an external EGR tube to the intake to make my EGR functional since my Vortec heads have no exhaust-heat passages. I'll provide a steel AN cap for the AN bung and a plug for the second O2 fitting.

$150 obo + shipping.

Or you can pick them up, or if you're within 60 or so miles of San Mateo CA and we can figure out the schedule I'll deliver.

http://www.milleredp.com/~jem/image/sub/headers_2.jpg

http://www.milleredp.com/~jem/image/sub/headers_1.jpg

Please note that the headers and Y-pipe weigh approximately 45lb packaged, and are bulky (40x36x12 approx). Approximate shipping to (just as an example) Columbus, OH - $60 Greyhound (you pick up at bus terminal), $100 USPS Parcel Post, $155 Fedex Home Delivery (UPS similar.)

Also available as seen in the picture:

The inlet pipe from the Y-pipe to the muffler (still attached to the muffler in the picture): if you're buying the headers and want this I'll cut it off and include it with the headers.

The Magnaflow muffler - don't recall what model, 3in center inlet/center outlet, about seven years old and in very good condition, $25 + shipping, about 20lb.

Other items still for sale:

A complete power mirror setup: http://67-72chevytrucks.com/vboard/s...d.php?t=462441

Smittybilt CN15-S4B steps: http://67-72chevytrucks.com/vboard/s...d.php?t=461723

Re: Thorley 399Y-3 Headers, Magnaflow muffler
 

bump

Re: Thorley 399Y-3 Headers, Magnaflow muffler
 

bump

Re: Thorley 399Y-3 Headers, Magnaflow muffler
 

bumpity-bump.

Oh, and after further research looks like the part # for this set is 399Y-1S. Only difference is still the Y-pipe-to-muffler connector.