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Is there a big gain from LS6 intake to FAST92 on a H/C 346?

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Old 01-28-2010, 09:42 PM
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Default Is there a big gain from LS6 intake to FAST92 on a H/C 346?

Getting ready for the AFR 205's and LSM cam 238/240 at .612 lift and 114lca..
What gains would be expected to upgrade from the stock TB and LS6 to a FAST 92/92 setup on this H/C motor? Just trying to figure out if it worth 1k or so, to upgrade intake and tb...Thanks..
Old 01-28-2010, 09:46 PM
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I think the FAST would be worth 20-30whp on a H/C car. Someone correct me if Im wrong here.
Old 01-29-2010, 08:17 AM
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read my results

FAST 90/90...home ported, never separated. just what i could get with a dremel.

cam only...smaller than yours
back to back dyno runs
tuned on the ls6 and the FAST so that wasn't the reason for the gain

18hp/12ftlbs
never lost power down low, always gained
moved torque peak 500rpm lower
cam peaked at 6400...so its not a high end screamer by any means

YES it will be worth it!!!
Old 01-29-2010, 03:21 PM
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thanks..... I read your report, Teke184, very good job..
Old 01-29-2010, 03:29 PM
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thanks...

always wanted to do one of those "highly debated" swaps...and do back to back testing.

planning to try it on a 100mm lid/larger maf when money allows




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