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Old 03-30-2017, 01:20 PM   #1
MSull16
 
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Upgrading Throttle body worth it?

My car isnt FI, and I heard typically those folks see gains but not us naturally aspirated guys. Im running out of upgrades before Im left with deciding on cam/heads vs. a blower. If its worth it I may snag a 102mm or save up for 3.91 gears for the torque. Thoughts?
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Old 03-30-2017, 01:32 PM   #2
davidscamaro

 
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102mm is too big for stock intake manifold, 95mm is perfect for stock manifold and that even requires slight porting on the manifold to get a smooth transition
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Old 03-30-2017, 03:22 PM   #3
BubbaSS
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3.91 gears will make city driving alot more fun...Have you thought about a ported TB as an option as well?
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Old 03-30-2017, 03:28 PM   #4
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Have you done an Electric Water Pump, E85, Ported LS3 Intake?
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Best ET 10.58 @ 131.8 stock heads and stock cam 453/445 SAE
10.62@134.82 GPI 281CC Heads, SS4 Cam and X1 Intake
Best 1/8 6.80@105.75
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Old 03-30-2017, 03:40 PM   #5
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Old 03-30-2017, 04:07 PM   #6
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Quote:
Originally Posted by lazerlemonta View Post
Have you done an Electric Water Pump, E85, Ported LS3 Intake?
I thought it wasnt safe to run E85? Is there a kit that makes it safe?
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Old 03-30-2017, 04:41 PM   #7
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Quote:
Originally Posted by MSull16 View Post
I thought it wasnt safe to run E85? Is there a kit that makes it safe?
I run DMS kit with hp tuners adding flex fuel tables
http://www.dedicatedmotorsports.com/Default.asp
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BOLT ONS TO THE EXTREME, GPI 281cc HEADS, Darth_V8r SPEC CAM, FAST 102 INTAKE, CRANK SCRAPER, QUARTER MASTER 7.25" CLUTCH, RPM 3.90 STAGE II DIF, Z51 Gear Set AND E85

Best ET 10.58 @ 131.8 stock heads and stock cam 453/445 SAE
10.62@134.82 GPI 281CC Heads, SS4 Cam and X1 Intake
Best 1/8 6.80@105.75
Best MPH 134.82
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Old 03-30-2017, 04:52 PM   #8
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I'm also considering a throttle body and E85. I need to contact Bo White for his opinion on. His TB vs. say BBK 95mm..


Quote:
Originally Posted by lazerlemonta View Post
I run DMS kit with hp tuners adding flex fuel tables
http://www.dedicatedmotorsports.com/Default.asp
What size injectors and fuel pump you running?
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Last edited by KonigWolf; 03-30-2017 at 05:21 PM.
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Old 03-30-2017, 07:46 PM   #9
pyroguy
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Get in touch with Bo White and get one of his ported throttle bodies. It doesn't make as much of a difference on throttle response on a LS3 as it does on a L99, but it does still make a difference. For a L99 it should almost be a mandatory upgrade as those things in stock fashion suck for throttle response.
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Old 03-30-2017, 09:58 PM   #10
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Port it. There is a bunch of material to remove.
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Old 03-30-2017, 10:04 PM   #11
davidscamaro

 
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BBK 95mm and port your own manifold the 2-3mm at the snout for maximum power gain from PTB mod
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Old 03-30-2017, 10:07 PM   #12
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Port the stock TB.
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