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SVT Shelby GT500
Need Longtubes...JBA?
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<blockquote data-quote="anvrsy red vert" data-source="post: 5986855" data-attributes="member: 19352"><p>When I spoke with Dustin Williams @ JBA, the contact person with Shelby Automobiles for the Super Snake package, he told me their headers (6695-SJS) added 60 rwhp alone when installed with their 3" X-pipe w/high flow cats (6696-SXC) and 3" cat back system (40-2633). With the 2.8H kenne bell @ 18#'s of boost with the stock manifolds and full 3" manifold back system listed above with a conservative tune it made 611 rwhp @ 6200 rpms. Adding the headers then produced 674 rwhp @ 6200 rpms. Boost only dropped to 17.5 #'s too!! 60 rwhp increase with 1/2# less boost is a BIG BANG FOR THE BUCK! Quality headers that use 3/8" flanges and come with Percy carbon header gaskets. Was told by him they tuck up real nice and don't pose any problems on lowered cars. Don't have to remove them to do clutch servicing either!! I'm having their silver ceramic coated long tubes and full 3" header back system installed on my 725hp Super Snake FWIW. Don't have any details though on their header back system with the stock blower. All the #'s above reflect the KB 2.8H</p></blockquote><p></p>
[QUOTE="anvrsy red vert, post: 5986855, member: 19352"] When I spoke with Dustin Williams @ JBA, the contact person with Shelby Automobiles for the Super Snake package, he told me their headers (6695-SJS) added 60 rwhp alone when installed with their 3" X-pipe w/high flow cats (6696-SXC) and 3" cat back system (40-2633). With the 2.8H kenne bell @ 18#'s of boost with the stock manifolds and full 3" manifold back system listed above with a conservative tune it made 611 rwhp @ 6200 rpms. Adding the headers then produced 674 rwhp @ 6200 rpms. Boost only dropped to 17.5 #'s too!! 60 rwhp increase with 1/2# less boost is a BIG BANG FOR THE BUCK! Quality headers that use 3/8" flanges and come with Percy carbon header gaskets. Was told by him they tuck up real nice and don't pose any problems on lowered cars. Don't have to remove them to do clutch servicing either!! I'm having their silver ceramic coated long tubes and full 3" header back system installed on my 725hp Super Snake FWIW. Don't have any details though on their header back system with the stock blower. All the #'s above reflect the KB 2.8H [/QUOTE]
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Need Longtubes...JBA?
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