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fast Lsxrt with 78mm throttle body on 6.0

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Old 10-02-2015, 12:29 AM
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Default fast Lsxrt with 78mm throttle body on 6.0

Obviously a 102mm tb is the best option but if a Fast lsxrt on a 6.0 with 102mm tb gains 25 hp, how much would a 78mm tb gain?
Mild cam, 220/220 .581/.581
Old 10-02-2015, 05:03 AM
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you cant fit a 78mm on one without a big adapter since the 78 is 3 bolts. also the 78 is a major restriction on a 102. if you're going to do that then imo just get a TBSS intake and save the money. if you want to go with the fast, and I now I would, you need a 92 or 102mm tb. the 102 is the best choice, I've tried both a 92 and 102mm tb. a NW or ptm is the way to go at around 350 brand new if not you *could* try and ebay tb for 100 bucks
Old 10-02-2015, 12:04 PM
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I know about the adapter ok thanks I'll stick to my stock truck intake
Old 10-02-2015, 01:33 PM
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The CBM-10708 is the adapter that is needed. I had to purchase one myself for when I move back to Cali. I will need to mount my ported fastory TB to the FAST 102 intake. I am not yet sure how it will run and perform as the car will be tuned for the 102/102 setup. It's called Hot Rod Rodding for a reason I guess 😀.
Old 10-02-2015, 02:21 PM
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Originally Posted by cali_bear2003
The CBM-10708 is the adapter that is needed. I had to purchase one myself for when I move back to Cali. I will need to mount my ported fastory TB to the FAST 102 intake. I am not yet sure how it will run and perform as the car will be tuned for the 102/102 setup. It's called Hot Rod Rodding for a reason I guess 😀.
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