North East F-Body Association

North East F-Body Association (http://www.northeastf-bodyassn.com/index.php)

- LSX Powertrain (http://www.northeastf-bodyassn.com/forumdisplay.php?f=37)

- - Header size? (http://www.northeastf-bodyassn.com/showthread.php?t=5266)

84ta406

12-15-2013 02:37 PM

Header size?

What are you guys using? My motor is a 5.3, fbody .500 cam and a LS1 manifold, backed by a TH400 and 9". Normally I would just stick with 1 3/4" in this application but I see a lot of different header sizes out there so I figured I would actually ask. Hedman makes a bunch of swap headers from 1 3/4 to 2" with stepped headers in between. The most I would do to this engine down the line is a head swap for some PRC heads and a 224R cam, so nothing crazy.

SLP IROC-Z

12-15-2013 06:12 PM

1 3/4

Slowhawk

12-16-2013 12:17 AM

Depends on the header design.

84ta406

12-16-2013 02:05 AM

Heres about the only picture I can find.

http://fcrcmachine.com/images/F86135899.jpg

My84Z

12-16-2013 02:56 AM

If you plan on turboing get something you can resell without losing on or somethibg you can flip like shorties. With that being said try 17/8" if you can but 13/4 should be fine for your application especially with a ls1 intake

KLAB	02-18-2014 08:31 PM

Those are big primaries^

84ta406

02-18-2014 09:53 PM

28"

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