5.3 heads
We offer complete cnc porting & competition cnc valve job with milling & reassembly for $750. You can add larger valves for right at $200 & your ready to roll with a nice set of heads!!
__________________
Jason
Co-Owner, Texas Speed & Performance, Ltd.
2005 Twin Turbo C6
404cid Stroker, 67mm Twins
994rwhp/902lb ft @ 22 psi (mustang dyno) www.Texas-Speed.com
Jason
Co-Owner, Texas Speed & Performance, Ltd.
2005 Twin Turbo C6
404cid Stroker, 67mm Twins
994rwhp/902lb ft @ 22 psi (mustang dyno) www.Texas-Speed.com
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Thread Starter
Staging Lane
Joined: Oct 2006
Posts: 90
Likes: 0
Launching!
Joined: Feb 2010
Posts: 277
Likes: 1
From: Shawnee, OK
i actually heard 5.3 heads stock even with the smaller valves flow within a few cfm from .100 all the way to .600 as stock ls1 heads so id think adding bigger valves to 5.3 heads would put you at right around the same flow with more compression. thats what i did anyway i had to take the heads off my car and i found a cheap set of 5.3s and the shop said they would sell em to me, transfer all my valves, springs, etc. to the 5.3 heads and surface them for like 350 including buying the heads. i do believe the runners are them same size so i would think the only thing keeping the 5.3 heads from flowin what ls1 heads do could be the valves.
