What size is too big, though? I’m aiming for a balanced performance set up generally. Any recommendations?
For a balanced setup, I’d stay around 92-95mm unless you’re pushing serious horsepower. That way, you maintain drivability while still maximizing airflow.
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Interesting! I’ve seen lots of options at 102mm, though. I guess it depends on what you want from the build. Do you guys think I’ll notice a performance difference?
johnlopez, performance gains are certainly noticeable, but it heavily relies on other mods too. If you’re just adding a throttle body, the difference may be less dramatic. Remember, tuning is key!
Exactly! It’s a piece of the puzzle. But let’s not forget larger throttle bodies can sometimes sound awesome, right? 
Haha, you’re not wrong, qwright! It’s all about that sound. However, if the performance isn’t there, it could be a letdown. Always weigh sound against real gains.
Let’s hope we can find that perfect balance! This is a complex choice for sure. It’s best to reflect on your entire build plan before deciding.
When selecting a throttle body for your LS build, size really matters! Too large can cause airflow problems which might throw off your tuning. I’ve seen guys struggle with idle issues after going oversized.
Exactly! And you can lose fuel economy with a bigger throttle body because it might require more fuel at lower RPMs. It’s a dumb cycle.
I think it’s best to stick with a 90mm throttle body for most LS builds unless you’re going for serious performance upgrades. Anything larger than that could complicate tuning.
Totally agree, a smaller throttle body can provide better throttle response without sacrificing too much power. Sometimes less is more!
Installing a throttle body that’s too small can cause its own set of issues, especially when it comes to airflow at high RPMs. You don’t want to choke your engine, either!
Yes! I learned that the hard way. I went too conservative once and lost power. It’s all about that balance.
Don’t forget about tuning! Larger throttle bodies can significantly change your air-fuel ratio and may require a complete retune to get everything playing nicely together.
Exactly! And if you’re not experienced with tuning, it might feel like jumping off a cliff without a parachute.
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I always say, if you’re unsure, consult with someone who knows LS builds. They can help you choose the right size and avoid costly mistakes. Better safe than sorry!
Great advice! I’d rather spend a little extra cash on a pro than wreck my engine trying to learn on the fly.
So what’s the verdict, guys? Could I get away with a 102mm throttle body if I’ve got a cam swap and headers? Or is that too risky?
I’d say you’ll likely need a retune for that, but it could definitely yield some gains with the right setup!
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All this talk about throttle bodies is giving me a headache! It’s like finding the perfect pair of shoes, too big and you trip, too small and you can’t walk! Just right is what you’re looking for.