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LT5 tHROTTLEBODY FIT A C-8?

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Old Jan 24, 2023 | 08:52 AM
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Default LT5 tHROTTLEBODY FIT A C-8?

I have a brand new LT5 throttlebody I bought for my ZL1 that I never used and cant sell, was wondering if it will work on a C-8 without setting check engiine lights?
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Old Jan 24, 2023 | 10:38 AM
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Originally Posted by David Gordon
I have a brand new LT5 throttlebody I bought for my ZL1 that I never used and cant sell, was wondering if it will work on a C-8 without setting check engiine lights?
I believe you have to have an adapter for that one. Check on Soler Performance website, they sell them and it makes a smooth transition into the intake manifold. The bolt pattern is only good up to 91mm I believe and the LT5 is 95mm.
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Old Jan 24, 2023 | 10:41 AM
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Originally Posted by MikeinAZ
I believe you have to have an adapter for that one. Check on Soler Performance website, they sell them and it makes a smooth transition into the intake manifold. The bolt pattern is only good up to 91mm I believe and the LT5 is 95mm.
It came with the adaptor and bolts. I just want to make sure it will jive with the computer.
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Old Jan 24, 2023 | 11:02 AM
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It works just fine. The hardest part is fitting the mouth of the throttle body inside the boot of the inlet tube. I use a dab of grease and some patience.
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Old Jan 24, 2023 | 11:59 AM
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Originally Posted by Snowblind2.0
It works just fine. The hardest part is fitting the mouth of the throttle body inside the boot of the inlet tube. I use a dab of grease and some patience.
Yep, that and/or a heat gun works well.
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Old Jan 24, 2023 | 02:17 PM
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Originally Posted by Snowblind2.0
It works just fine. The hardest part is fitting the mouth of the throttle body inside the boot of the inlet tube. I use a dab of grease and some patience.
Dont throw any check engine lights? Is there any power to be had? Dyno proven?
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Old Jan 24, 2023 | 02:32 PM
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Originally Posted by David Gordon
Dont throw any check engine lights? Is there any power to be had? Dyno proven?
No CEL, but I dont believe on its own its gaining any power. Snowblind can chime in as well, we both have mods to our cars and I dont think that a tb on its own would do much w/out a ported manifold and other boltons.

I was running a Lingenfelter intake manifold and 95mm tb but had to remove it for some large warranty issues and repairs. Another member bought it on here and ran some real world tests and it showed no marked improvement over stock times, back to back.
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Old Jan 24, 2023 | 02:39 PM
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Originally Posted by MikeinAZ
No CEL, but I dont believe on its own its gaining any power. Snowblind can chime in as well, we both have mods to our cars and I dont think that a tb on its own would do much w/out a ported manifold and other boltons.

I was running a Lingenfelter intake manifold and 95mm tb but had to remove it for some large warranty issues and repairs. Another member bought it on here and ran some real world tests and it showed no marked improvement over stock times, back to back.
If there is no real gains, I think I will wait till I buy a ported manifold. Car just rolled over to 350 miles. Going in for Paragon Catback and AFE Track cold air kit before it hits 400 miles.
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Old Jan 24, 2023 | 03:45 PM
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How much you want for it?
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Old Jan 24, 2023 | 03:48 PM
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According to Jannetty Racing in Connecticut, my LT1 2021 Camaro would need a tune if I installed a LT5 TB .
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Old Jan 24, 2023 | 03:52 PM
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$250 plus shipping
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Old Jan 26, 2023 | 10:57 PM
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I installed the LT5 95mm TB from soler paired with Gwatney ported intake manifold to 95mm with no adapter since they both are 95mm (just a gasket that soler provides). I can say this. I feel low end torque was compromised a bit, but I do feel a difference with a stronger pull once going 50+mph
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Old Jan 27, 2023 | 10:23 AM
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Originally Posted by Vetteking32
I installed the LT5 95mm TB from soler paired with Gwatney ported intake manifold to 95mm with no adapter since they both are 95mm (just a gasket that soler provides). I can say this. I feel low end torque was compromised a bit, but I do feel a difference with a stronger pull once going 50+mph
Well that is certainly a kick in the pants. If you could feel less low end in the seat of your pants, that would be a substantial loss of power/torque. I would imagine a 60 ft time and a 0-60 time would be a bit slower negating anything good about just putting on a 95mm TB and porting the intake snout .
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Old Jan 27, 2023 | 10:49 AM
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The problem with the 95mm is that it kills velocity. Soler does a nice job retaining the stock 87mm housing and turning it into a 91mm-effective design by shaving down the shaft and reshaping the walls which reduces restriction, increases the maximum airflow, while still keeping overall velocity where it needs to be.
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Old Jan 27, 2023 | 11:46 AM
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Originally Posted by Kracka
The problem with the 95mm is that it kills velocity. Soler does a nice job retaining the stock 87mm housing and turning it into a 91mm-effective design by shaving down the shaft and reshaping the walls which reduces restriction, increases the maximum airflow, while still keeping overall velocity where it needs to be.
Exactly Kracka.......A friend of mine just has the 87mm ported to 91mm Solar performance, with a ported intake manifold. And I can tell you his C8 is much stronger than my stock C8 in the 1/4 mile and 1/8 mile. In others words, he is making a gap and still pulling. Only saw 12 rwhp on the dyno compared to a stock C8 same day and same time. That is one reason I prefer track numbers if in fact one is available in your area. I honest believe that the 95mm TB is fine as Snowblind mentioned earlier. But I also believe that the 95mm TB from Soler Performance is ported to 100mm which I also think that it is too big for the application unless the car is tuned. And that was an advice from Soler Performance. I just received my ported intake manifold, 87mm ported and the blue attack filter. So I guess that I will find out later.....just crossing my fingers.
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Old Jan 27, 2023 | 12:09 PM
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Very nice. I have the ported IM/TB combo on my car as well, but went with the full aFe intake as I wasn't impressed with the AB filter (after going against my intuition and experience by ordering it). For a drop-in, I'd go with the aFe dry since it out-performs the AB on the dyno and lasts a lifetime with cleaning only required every 25-50k miles vs. the AB which requires 10k cleaning intervals and 50k replacement. I like the K&N as well since it retains the OEM-style air divider.
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Old Jan 27, 2023 | 01:20 PM
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Originally Posted by Fore58
Exactly Kracka.......A friend of mine just has the 87mm ported to 91mm Solar performance, with a ported intake manifold. And I can tell you his C8 is much stronger than my stock C8 in the 1/4 mile and 1/8 mile. In others words, he is making a gap and still pulling. Only saw 12 rwhp on the dyno compared to a stock C8 same day and same time. That is one reason I prefer track numbers if in fact one is available in your area. I honest believe that the 95mm TB is fine as Snowblind mentioned earlier. But I also believe that the 95mm TB from Soler Performance is ported to 100mm which I also think that it is too big for the application unless the car is tuned. And that was an advice from Soler Performance. I just received my ported intake manifold, 87mm ported and the blue attack filter. So I guess that I will find out later.....just crossing my fingers.
This is exactly what I ended up with, took off my Lingenfelter intake system due to a major warranty issue w/ GM and couldn't risk having it on. Anyway, I researched a LOT about throttle body velocity vs volume and ended up concluding more velocity trumped more volume as our stock manifolds flow very well already.

As Kracka mentioned, I think velocity is the key. I raced 2 friends w/ stock C8s from a dig and gapped both of them slightly to 110mph or so. I have high flow cats, Atak blue filter, ported intake manifold, Soler 91mm tb and a pedal commander (same thing as Soler throttle controller basically). Very happy w/ how my car drives daily and it is a more aggressive throttle feel w/ these mods combined. For what its worth and I know its not 100% accurate my 0-60 timer shows pretty consistent 2.8 times and I'm at about 1600' altitude.
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Old Jan 27, 2023 | 06:45 PM
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Originally Posted by Kracka
The problem with the 95mm is that it kills velocity. Soler does a nice job retaining the stock 87mm housing and turning it into a 91mm-effective design by shaving down the shaft and reshaping the walls which reduces restriction, increases the maximum airflow, while still keeping overall velocity where it needs to be.
I would assume the set up would work better if you free up exhaust flow (out-take) like headers to create a difference between 87mm Tb versus 95 mm Tb and ported snout. I have the soler 91mm (effective) TB now.
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Old Jan 27, 2023 | 07:45 PM
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For the record, I also have aFe headers & Corsa cats. I don't think a 95mm really comes into play until you go FI.
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Old Jan 27, 2023 | 08:22 PM
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Originally Posted by Kracka
For the record, I also have aFe headers & Corsa cats. I don't think a 95mm really comes into play until you go FI.
I hear ya.
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