Long tube headers for 5.3L swap
 

What long tube headers are you guys using for ls swaps? Truck or car applications?

Re: Long tube headers for 5.3L swap
 

Doug Thorley is the go to. They have 1-3/4" and 1-5/8"

Re: Long tube headers for 5.3L swap
 

Do the 99+ truck headers fit or do I need to get a set for a camaro or gto?

Re: Long tube headers for 5.3L swap
 

I plan on using the Speed Engineering headers.

Here's some more info on them
http://67-72chevytrucks.com/vboard/s...d.php?t=711185

Re: Long tube headers for 5.3L swap
 

Thanks for the info. Those look like the way to go

Re: Long tube headers for 5.3L swap
 

Look in the LSX swap section there are lots of info in there.
http://67-72chevytrucks.com/vboard/f...play.php?f=206
Jimmy

Re: Long tube headers for 5.3L swap
 

Stock truck header will need frame surgery, the TBSS manifolds work very well, they are shortied tho. Hooker makes an aftermarket version of the TBSS.

Shorties are fine for stock or "tuned" applications, if cam swap and added power, you need long tube.

Re: Long tube headers for 5.3L swap
 

We went with Speed Engineering 1-7/8" headers.

http://i6.photobucket.com/albums/y20...h_P1260596.jpg
http://i6.photobucket.com/albums/y20...h_P1260885.jpg
http://i6.photobucket.com/albums/y20...h_P1260899.jpg
http://i6.photobucket.com/albums/y20...h_P1270047.jpg

Re: Long tube headers for 5.3L swap
 

The Speed Engineering website does say they require slider engine mounts to clear the front crossmember. Not sure if that's what you are using or how true it is.

Re: Long tube headers for 5.3L swap
 

We used the stock '65 230ci perches, stock replacement mounts, and Speed Engineering's motor mount plates...no clearance issues.

Re: Long tube headers for 5.3L swap
 

That's good to know, those are way cheaper than the Dirty Dingo sliders.