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Been thinking about doing this, supposed to help torque. Let me know how it works, seriously interested in the results.


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Will do. I only have a cam/ported intake manifold + FBO so it might be different than what you would see but I am going to datalog before and after, do a dragy comparison and if I notice a change, I'll dyno it to compare.

There's a video of someone doing a dyno on a heads/cam car and it picked up 16 horses.
 

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I saw some of those videos as well. I have a boosted 426 so I’m hoping it would be worth it HP wise. I have a 85mm now so not sure it would help me that much more.


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I saw some of those videos as well. I have a boosted 426 so I’m hoping it would be worth it HP wise. I have a 85mm now so not sure it would help me that much more.


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Yeah that's a good question. There is a post on all the srt8 forums from Andy at PWR which is a shop that used to mod these cars. He compared 85vs90vs100 and he saw the best power with 100mm. There is a lot of contradicting info out there so I decided to do my own test.

I was running stock to a 90mm ported manifold so I'm thinking it should give me something with some tuning. You can piece this kit together for 450$ish so I figured why not.
 

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Yeah that's a good question. There is a post on all the srt8 forums from Andy at PWR which is a shop that used to mod these cars. He compared 85vs90vs100 and he saw the best power with 100mm. There is a lot of contradicting info out there so I decided to do my own test.

I was running stock to a 90mm ported manifold so I'm thinking it should give me something with some tuning. You can piece this kit together for 450$ish so I figured why not.
I had the 100mm with PWR's heads, cam and ported mani. Also ud pulley and kooks headers. I wish I did a comparison between the throttlebodys but it all went on at the same time. I'm still running the 100mm with my turbo setup. I went with the 100mm after probably reading the same post you read back then lol
 

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I had the 100mm with PWR's heads, cam and ported mani. Also ud pulley and kooks headers. I wish I did a comparison between the throttlebodys but it all went on at the same time. I'm still running the 100mm with my turbo setup. I went with the 100mm after probably reading the same post you read back then lol
You still hold the heads/cam record with that set up right?
 

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Eskles Maggie still running strong. Just wish I could got the cog set up haha


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Eskles Maggie still running strong. Just wish I could got the cog set up haha


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That cog set up was incredibly loud. Produced 18 lbs. of boost though! Fun for racing. Sucked for cruising.
I miss the torque from a dig for sure!


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2007 SRT8 Jeep Grand Cherokee
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Picked up a “winter” muffler. Cyclone series. It’s only slightly less loud as the Street/Race kit but not as loud/less drone from 70-80 which was my problem area (with windows up). In the summer and windows open, the Street/Race kit is pure magic.
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