3.55 Swap with a Gen 2 and a Centri

[Whitedevil95]

Hey all I currently have a Gen 2 6R80 car with 3.15s and a ESS G3X with all the usual stuff detailed in my dig. I was looking at moving over to a 3.55 pumpkin to get the car up in the rpms sooner and keep it there. I had a couple quesitons though.

1. Have other centri guys seen improvements with a 3.55 swap? Worth the hassle?
2. I see there are cast iron pumpkins and aluminum pumpkins, my stock is aluminum and i was tihnking id rather keep it that way for weight and such. Any reason why id want to look into a cast iron?

Sponsored

 

[Proshop]

@WonderDud

 

[SheepDog]

Hey all I currently have a Gen 2 6R80 car with 3.15s and a ESS G3X with all the usual stuff detailed in my dig. I was looking at moving over to a 3.55 pumpkin to get the car up in the rpms sooner and keep it there. I had a couple quesitons though.

1. Have other centri guys seen improvements with a 3.55 swap? Worth the hassle?
2. I see there are cast iron pumpkins and aluminum pumpkins, my stock is aluminum and i was tihnking id rather keep it that way for weight and such. Any reason why id want to look into a cast iron?

The aluminum pumpkins have been known to crack the ears where it bolts to the subframe on hard launches, especially on prepped surfaces with sticky tires. Why not just go with the 3.73 Torsen unit from the PP cars? No clutches to wear out, Iron pumpkin, quicker acceleration

 

[Whitedevil95]

@WonderDud

He and I have been chatting about it a little on PM. I just wanted to see if anyone else had experience with this.

 

[Proshop]

He and I have been chatting about it a little on PM. I just wanted to see if anyone else had experience with this.

Good deal!

 

[Whitedevil95]

The aluminum pumpkins have been known to crack the ears where it bolts to the subframe on hard launches, especially on prepped surfaces with sticky tires. Why not just go with the 3.73 Torsen unit from the PP cars? No clutches to wear out, Iron pumpkin, quicker acceleration

I was thinking 3.73 might be a little too steep for me. But I do like the idea of the Torsen Diff.

 

[monte87]

Hey all I currently have a Gen 2 6R80 car with 3.15s and a ESS G3X with all the usual stuff detailed in my dig. I was looking at moving over to a 3.55 pumpkin to get the car up in the rpms sooner and keep it there. I had a couple quesitons though.

1. Have other centri guys seen improvements with a 3.55 swap? Worth the hassle?
2. I see there are cast iron pumpkins and aluminum pumpkins, my stock is aluminum and i was tihnking id rather keep it that way for weight and such. Any reason why id want to look into a cast iron?

i'm in the same boat. Looking to swap out rears from 3.15 to 3.55s iron. I have roush phase 2 blower.
Anthony

 

[SheepDog]

I was thinking 3.73 might be a little too steep for me. But I do like the idea of the Torsen Diff.

well, you could always put a taller tire on the rear if needed

 

[Pk64f100]

I have ‘19 GT cs and it came with 315 it is good on the mpg but definitely little sluggish what size tire would help I have 255/40R19 ?

Sponsored