How much more hp do you get with AS&M over my crapy Gibson shorties?

 

I would guess around 10-12 more hp from shortys to LTs

 

Take a look at my Thorley 310Y Ceramic Coated Tri-Y headers on my 2000 Yukon XL. It has the LQ4 6.0 L with the 4L80E (same as your truck) http://community.webshots.com/user/sbryant2100. They're great headers.

 

where did you get your headers and how much did you pay if you dont mind me asking thanks


Brett

 

Hell yeah, Thorley is great. I wonder if the TOGs are better than Thorley. The quality seems better, beefier flange for example. Performance wise I wonder which would win. Neither look to be long-tubes like the Dynatech or AS&Ms.

 

Someone installed some Thorley's on their truck and had problems with them hitting the frame on one side and the front driveshaft on the other.

 

I heard of that with the SuperMaxx headers. Not the Thorley though....

 

That was a guy in Louisana with a C1500 (2WD) which has rack and pinion steering rather than recirculating ball like on the 1500HD. I took a picture for him to show the clearance between my steering shaft and the headers. Here is my post with the picture https://ls1tech.com/forums/showpost....3&postcount=11. I can't tell you what I paid, but I bought them direct from Thorley over the phone. Some of their dealers probably have better prices. Look on their web site www.thorleyheaders.com

 

Hey Flyer
Since i got a 02 5.3, i shouldnt have the EGR also? But so i can check and make sure, where would it be and what would it look like. Im still stock, so still on the exhaust manifold.Also,(stupid question) what does EGR mean and what does it do? Im guessing it reads your exhaust to check your mixture. But I dont know, thats why i ask.
Thanks

 

thanks for the pic steve there shouldnt be any clearence issues i cant fint and info on them on there web sight so ill just call but thanks for the info

Brett