[Megahurtz]

If you're stock heads and/or stock cam on an LT1, don't bother with the 95mm TB. Just get a ported 87mm, like the Soler 91mm Eff unit. Even with an unported LT2 TB, put the ported 87mm on it.

If you do a cam, port the LT2 manifold and have it ported for a 95mm TB. Then get the ported 95mm TB from Soler, I think its called the 100mm Eff unit. You could also just do an unported 95mm but the ported unit has an advantage above the stock rev limiter which you typically exceed when you put a cam in the car.

If you do heads and cam, get an MSD intake manifold and a 103mm TB.



The NA cars don't pick up power with oversized throttle bodies like LT4's do. In fact, they typically lose low-mid range torque if your throttle body is too large for the air flow the engine can use.

[SSShark]

Originally Posted by Megahurtz

If you're stock heads and/or stock cam on an LT1, don't bother with the 95mm TB. Just get a ported 87mm, like the Soler 91mm Eff unit. Even with an unported LT2 TB, put the ported 87mm on it.

If you do a cam, port the LT2 manifold and have it ported for a 95mm TB. Then get the ported 95mm TB from Soler, I think its called the 100mm Eff unit. You could also just do an unported 95mm but the ported unit has an advantage above the stock rev limiter which you typically exceed when you put a cam in the car.

If you do heads and cam, get an MSD intake manifold and a 103mm TB.



The NA cars don't pick up power with oversized throttle bodies like LT4's do. In fact, they typically lose low-mid range torque if your throttle body is too large for the air flow the engine can use.

Thank you Megahurtz. I was slowly leaning in that direction after reading all threads. I have stock heads and cam along with mods in my signature. So non ported LT2 along with a ported 87mm TB. My question is why port the 87mm TB?

[Megahurtz]

Originally Posted by SSShark

Thank you Megahurtz. I was slowly leaning in that direction after reading all threads. I have stock heads and cam along with mods in my signature. So non ported LT2 along with a ported 87mm TB. My question is why port the 87mm TB?

You get just a little bit more airflow near redline which pairs well with the LT2 intake manifold.

[SSShark]

Originally Posted by Megahurtz

You get just a little bit more airflow near redline which pairs well with the LT2 intake manifold.

Got it, thanks brother

[RideWithDanger]

If you have to pick between a non ported LT5, or ported stock 87, just get the LT5. Porting isn't cheap and can be problematic to tune, where the LT5 is very affordable and tuners know it well. Plus you can still have your stock 87 if you ever need it, or wanted to sell it to recoup some cost.

[SSShark]

Originally Posted by RideWithDanger

If you have to pick between a non ported LT5, or ported stock 87, just get the LT5. Porting isn't cheap and can be problematic to tune, where the LT5 is very affordable and tuners know it well. Plus you can still have your stock 87 if you ever need it, or wanted to sell it to recoup some cost.

I've been speaking with a very reputable local tuner about this. He does nothing but LS and LT cars and has assured me to definitely go ahead with the ported LT2 along with the ported LT5. He's done several of them with positive results. I'm going to give it a shot. Worst case scenario, I can always go back to the stock intake and TB.

[RideWithDanger]

Originally Posted by SSShark

I've been speaking with a very reputable local tuner about this. He does nothing but LS and LT cars and has assured me to definitely go ahead with the ported LT2 along with the ported LT5. He's done several of them with positive results. I'm going to give it a shot. Worst case scenario, I can always go back to the stock intake and TB.

I went with ported LT2 IM and stock LT5 TB, but as long as your tuner is comfortable with it and you are okay spending the money for the minimal gain, then port the LT5 and enjoy!

[SSShark]

Originally Posted by RideWithDanger

I went with ported LT2 IM and stock LT5 TB, but as long as your tuner is comfortable with it and you are okay spending the money for the minimal gain, then port the LT5 and enjoy!

[WiggyB]

Originally Posted by Megahurtz

If you're stock heads and/or stock cam on an LT1, don't bother with the 95mm TB. Just get a ported 87mm, like the Soler 91mm Eff unit. Even with an unported LT2 TB, put the ported 87mm on it.

If you do a cam, port the LT2 manifold and have it ported for a 95mm TB. Then get the ported 95mm TB from Soler, I think its called the 100mm Eff unit. You could also just do an unported 95mm but the ported unit has an advantage above the stock rev limiter which you typically exceed when you put a cam in the car.

If you do heads and cam, get an MSD intake manifold and a 103mm TB.



The NA cars don't pick up power with oversized throttle bodies like LT4's do. In fact, they typically lose low-mid range torque if your throttle body is too large for the air flow the engine can use.

I don't know why I feel like you were talking directly to me what that statement. I know you said don't do nothing else but I don't see that here.

[Megahurtz]

Originally Posted by WiggyB

I don't know why I feel like you were talking directly to me what that statement. I know you said don't do nothing else but I don't see that here.

I was speaking generally for NA setups. Stock heads/cam NA LT1's don't need the airflow from a 95mm TB. The gains come more from the LT2 intake manifold vs the LT1 manifold. Then porting the stock TB is the cheaper option and you won't gain anything by going to a 95mm TB.


Why do you think I was talking about you? lol

[WiggyB]

Originally Posted by Megahurtz

I was speaking generally for NA setups. Stock heads/cam NA LT1's don't need the airflow from a 95mm TB. The gains come more from the LT2 intake manifold vs the LT1 manifold. Then porting the stock TB is the cheaper option and you won't gain anything by going to a 95mm TB.


Why do you think I was talking about you? lol

You're good I was just being sarcastic. The car runs like a dream since the last update you provided. I just be combing the threads and looking at little stuff that could be done. Then when the weather breaks I go for a ride and forget all about it. As we all know the itch never goes away so you're always looking.

[OB0001]

my car is N/A un opened bolt on 95mm TB/ MSD see my times below drag radials and E80 remote tune from GPI. drive 50 miles to the track and back great street manners, Car pulls like a freight Train up top!

[vince3]

Originally Posted by Megahurtz

I was speaking generally for NA setups. Stock heads/cam NA LT1's don't need the airflow from a 95mm TB. The gains come more from the LT2 intake manifold vs the LT1 manifold. Then porting the stock TB is the cheaper option and you won't gain anything by going to a 95mm TB.


Why do you think I was talking about you? lol

This is a legit question, if stock heads/cam Na doesn’t benefit from the TB, then why do all the 500 plus rwhp and the fastest bolt on cars run big throttle bodies ? Is it something that only benefits high rams or are you saying it’s just little gains for the money? I can also link the posts in here with non header cars running MSDs and 103s putting down 480 plus rwhp.

[vince3]

https://www.camaro6.com/forums/showthread.php?t=587847

https://www.camaro6.com/forums/showthread.php?t=577766

https://www.camaro6.com/forums/showthread.php?t=543424

https://youtu.be/j5iR4i4kEIc?si=N66IYx31PcGFcaCh

https://www.camaro6.com/forums/showthread.php?t=535959

Here’s the ones I’m thinking of. You just don’t see LT2 intakes with ported 87s hitting these numbers. 2 of them don’t even have headers.

But I guess they can just mess with dynos to show any numbers.