3.73 gear swap or GT350 Manifold?

[GSLSE20B]

Cheers.

Spoke with Lund again today, the entire tuning team now has the 350 TB tables as Jon II is now happy with drive ability.

So I am gonna get 350 IM & 350 TB and drop Lund the $50 to have my tune adjusted to suite. Will add LT headers later in the year.

I just loaded the new LUND TB revision yesterday . anyone on the fence with the gt350 manifold AND throttle body , jump in with both feet . More responsive everywhere in the load and rpm range over the stock manifold and throttle body .

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[Gibbo205]

Awesome!!!

Sure is!

They said on the latest revisions with 350 TB they are now seeing gains from 3000rpm upwards and those gains get stronger from 5500rpm with massive gains above 7000rpm.

In short any loss if any is below 3000rpm and minimal and the torque curve is flatter on the 350 IM/TB and power a little more linear so in theory should drive nicer.

 

[Gibbo205]

I just loaded the new LUND TB revision yesterday . anyone on the fence with the gt350 manifold AND throttle body , jump in with both feet . More responsive everywhere in the load and rpm range over the stock manifold and throttle body .

Yeah they mentioned yourself, hehe.
Saying they'd use your tune as my base and make alterations necessary to suite my car and then datalog from there.

In short they said I should feel no losses and over 3000rpm gains should be felt with the real improvements from 5500rpm upwards.

 

[4V Mayhem]

All this talk about the GT 350 IM and TB...so II just bought a set just now, lol!! I don't use Lund tho. So I got the spacer just in case my tuner has issues with it! We'll see soon enough!!

 

[randotheking]

I went from 2.73 3.5L to 3.73 5.0L

The only thing I miss is city gas mileage and smoother shifts, but apparently that will smooth out over time

 

[WhiteyDog]

I just loaded the new LUND TB revision yesterday . anyone on the fence with the gt350 manifold AND throttle body , jump in with both feet . More responsive everywhere in the load and rpm range over the stock manifold and throttle body .

SH*T!!!! Why did you have to post that?!?!? I was perfectly happy with my stock TB on my 350 IM, UUUUGH!!!!!

 

[WhiteyDog]

Yeah they mentioned yourself, hehe.
Saying they'd use your tune as my base and make alterations necessary to suite my car and then datalog from there.

In short they said I should feel no losses and over 3000rpm gains should be felt with the real improvements from 5500rpm upwards.

And your post isn't helping any, either!!!

 

[Mikeg4572]

I ordered mine! I cant wait!!!!!!

 

[GSLSE20B]

And your post isn't helping any, either!!!

this revision is great , i had the gt throttle body and adapter at one point . then the gt350 TB . the 350 TB is so much more responsive . with the GT350 TB design ,the imrc and the vct dialed , there is no comparison . i run my car hard and this last map surprised the hell out of me. just looking at my airflow curve , i have gained through my whole map .i almost want to do a dyno and im a cheapskate .

 

[WhiteyDog]

this revision is great , i had the gt throttle body and adapter at one point . then the gt350 TB . the 350 TB is so much more responsive . with the GT350 TB design ,the imrc and the vct dialed , there is no comparison . i run my car hard and this last map surprised the hell out of me. just looking at my airflow curve , i have gained through my whole map .i almost want to do a dyno and im a cheapskate .

No surging? Smooth through the whole RPM range? Responsive when you punch it?

 

[RomanB]

this revision is great , i had the gt throttle body and adapter at one point . then the gt350 TB . the 350 TB is so much more responsive . with the GT350 TB design ,the imrc and the vct dialed , there is no comparison . i run my car hard and this last map surprised the hell out of me. just looking at my airflow curve , i have gained through my whole map .i almost want to do a dyno and im a cheapskate .

Will run 10.5 n/a just with the switch of a throttle body

 

[Gibbo205]

No surging? Smooth through the whole RPM range? Responsive when you punch it?

He said its more response, the throttle body is 80mm for higher speed velocity to improve throttle response and partial throttle loads. When WOT you get the advantage of 87mm, so in theory the car should drive and feel much better on a well tuned 350 setup.

 

[Terminator2]

this revision is great , i had the gt throttle body and adapter at one point . then the gt350 TB . the 350 TB is so much more responsive . with the GT350 TB design ,the imrc and the vct dialed , there is no comparison . i run my car hard and this last map surprised the hell out of me. just looking at my airflow curve , i have gained through my whole map .i almost want to do a dyno and im a cheapskate .

Ok you sold me. It's not a very expensive throttle body at least.

 

[BluByeU]

I knew that they would figure it out sooner or later...this will be my next mod. Great reading all of the reviews of satisfied customers. Yeah buddy! For a sleeper, you could get the 350 mani painted in gray and the unsuspecting eye would never notice

Sure is!

They said on the latest revisions with 350 TB they are now seeing gains from 3000rpm upwards and those gains get stronger from 5500rpm with massive gains above 7000rpm.

In short any loss if any is below 3000rpm and minimal and the torque curve is flatter on the 350 IM/TB and power a little more linear so in theory should drive nicer.

 

[GSLSE20B]

No surging? Smooth through the whole RPM range? Responsive when you punch it?

No surge , smooth power delivery , and the responsiveness was the surprise .

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