11-14-2012, 03:29 PM | #1 |
Drives: 2013 ZL1 Join Date: Oct 2012
Location: puyallup
Posts: 543
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zl1 throttle body restrictive?
car is currently stock. but im throwing a rotafab intake on my m6 zl1 as soon as i recieve it and was wondering if the stock throttle body had any gains to be had by replacing it with a nw 102? for now im not modding to heavily but down the road i will be doing a cam and valve springs and heat exchanger/pump and headers so it will eventually be needed.
was just curious if the money was worth it now to pick one up to combo with the intake
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C6Z06 400ci, twin gen 2 promod 88's,th400, Alky car
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11-14-2012, 04:36 PM | #2 |
Drives: 2013 ZL1 Join Date: Oct 2012
Location: puyallup
Posts: 543
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assume a TB would probably need a ported snout aswell to get full benefit
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C6Z06 400ci, twin gen 2 promod 88's,th400, Alky car
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11-14-2012, 07:10 PM | #3 |
Drives: 2013ZL1 Join Date: Jul 2012
Location: Northern California
Posts: 94
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The 90mm LS3 throttle body is suppose to give an increase of 14HP without anything other than bolting it up. GM part number 12605109. The stock ZL1 throttle body is 85 or 87mm so the 90mm is about a 10% increase in open area. About $140 to $150 from GM parts house, Parts Taxi or GM parts Direct.
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11-14-2012, 07:16 PM | #4 | |
Philippians 4:13
Drives: SLP Supercharged LS3 Join Date: Aug 2009
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Quote:
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11-14-2012, 07:21 PM | #5 |
Drives: 2013ZL1 Join Date: Jul 2012
Location: Northern California
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Yes, ZL1 10% smaller area. CTSVs have the same smaller throttle body and respond very well to the 90mm LS3 throttle body. No porting necessary.
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11-14-2012, 07:37 PM | #6 |
Drives: 2013 ZL1 Join Date: Oct 2012
Location: puyallup
Posts: 543
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Might aswell just get the Nw 102 if I'm going to go bigger
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11-14-2012, 09:05 PM | #7 |
Drives: 2017 ZL1, 2015 Z51 vette 2005 gto Join Date: Sep 2009
Location: New Castle,pa
Posts: 252
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Is there any other wiring harnesses needed with the 90 mm?
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11-14-2012, 09:14 PM | #8 |
Drives: 2013ZL1 Join Date: Jul 2012
Location: Northern California
Posts: 94
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The 102 is bigger than the snout opening so you won't gain anything without porting, plus the 102 is over $500.
The LS3 plugs right into the existing connector and matches the stock port opening. Plug and play $140. |
11-14-2012, 09:28 PM | #9 |
Drives: 2013 ZL1 Join Date: Oct 2012
Location: puyallup
Posts: 543
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I eventually plan on porting the snout anyways so may just do it all at once. Itl be getting a cam and pulley down and heat exchanger and some other stuff in the near future anyways
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11-15-2012, 03:57 AM | #10 |
Drives: 2013 ZL1 # 2195 Join Date: Jun 2009
Location: Bradenton, FL
Posts: 965
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What TB does the ZR1 Corvette have?
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11-15-2012, 09:28 AM | #11 | |
Drives: 2012 ZL1 #1786 Join Date: Jan 2011
Location: Connecticut
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So if you added the no tune CAI and a 90mm TB would you need a tune? I assume yes with all the extra air flow |
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11-15-2012, 09:51 AM | #12 |
Drives: 2013 ZL1 Join Date: Oct 2012
Location: puyallup
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You shouldn't since its still less than running an od pulley
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11-15-2012, 10:11 AM | #13 |
Drives: 2012 ZL1 #1786 Join Date: Jan 2011
Location: Connecticut
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good point. I am definitely getting a no tune CAI. I will probably get a pully but do not want to tune the car yet. JRE has some great results. I am thinking the CAI and 90MM TB to start and then can add pulley etc with or without a tune when I want. Still want to retain the factory warrentee at this point. A CAI and TB is a pretty cheap upgrade which can be utilized with any future mods.
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11-15-2012, 10:36 AM | #14 | |
Drives: 2013 ZL1 Join Date: Oct 2012
Location: puyallup
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Quote:
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C6Z06 400ci, twin gen 2 promod 88's,th400, Alky car
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