K.Brown Customs Posted November 12, 2012 Report Share Posted November 12, 2012 i have a 03 with the radix sc will the ls7 tb bolt right up? is it worth the money with a super charger? i figure, the charger is pulling air no matter what.... do i really need a 12mm larger tb? i can get a brand new 90 mm ls7 tb for $145 shipped whats your thoughts? kb- Quote Link to comment Share on other sites More sharing options...
1BAD2K Posted November 12, 2012 Report Share Posted November 12, 2012 This mods is definitely worth while on a supercharged app. The only prob is that the j-tube on the damn radix blower is 78mm, that was one thing I loved about the tvs1900 I bought for the ss was the front inlet was a 90mm. Anyways to make this tb work, you'll need a 90mm j-tube and to make the electronics of it function, you'll need an x-link. I bought a radix for my ss clone I'm building and the first thing I got was that bigger j-tube. Now I need to order a tb and x link as well. Quote Link to comment Share on other sites More sharing options...
K.Brown Customs Posted November 12, 2012 Author Report Share Posted November 12, 2012 whats this "x-link"?? is that for the electric plug? so the 90mm TB bolts right up? but its not plug and play? I figured the J-tube was a different size. I can fab up a stainless pipe or mild steel, powder coated... no big deal do I need to tune it too?? thanx for the info bro KB- Quote Link to comment Share on other sites More sharing options...
BLNAWAY Posted November 12, 2012 Report Share Posted November 12, 2012 (edited) whats this "x-link"?? is that for the electric plug? so the 90mm TB bolts right up? but its not plug and play? I figured the J-tube was a different size. I can fab up a stainless pipe or mild steel, powder coated... no big deal do I need to tune it too?? thanx for the info bro KB- its the adapter plug needed for 90mm tb and yes bolts right up but not plug n play yes you will need re-tune after install read this info on x link : http://www.torquerush.com/ and http://www.torquerush.com/More.html Edited November 12, 2012 by BLNAWAY (see edit history) Quote Link to comment Share on other sites More sharing options...
chpspecial Posted November 15, 2012 Report Share Posted November 15, 2012 its the adapter plug needed for 90mm tb and yes bolts right up but not plug n play yes you will need re-tune after install read this info on x link : http://www.torquerush.com/ and http://www.torquerush.com/More.html correction, he will need to upgrade the J tube on the radix to a 90mm 4 bolt flange style to be able to run an LS7 TB. his 3 bolt flange 78mm wont accept the bigger TB unless some modifying is involved. And it not just a 12mm upgrade, its a 1584mm^2 upgrade. so yes worth it. Think of it this way, when your truck is at WOT, would you radder have it breath threw a tine straw, or a bigger one, in the case of a radix, it has proven to lower IAT because the radix works less to ingest air Quote Link to comment Share on other sites More sharing options...
canadianVRss Posted November 16, 2012 Report Share Posted November 16, 2012 (edited) correction, he will need to upgrade the J tube on the radix to a 90mm 4 bolt flange style to be able to run an LS7 TB. his 3 bolt flange 78mm wont accept the bigger TB unless some modifying is involved. And it not just a 12mm upgrade, its a 1584mm^2 upgrade. so yes worth it. Think of it this way, when your truck is at WOT, would you radder have it breath threw a tine straw, or a bigger one, in the case of a radix, it has proven to lower IAT because the radix works less to ingest air Exactly^^^ Surface area 78mm tb 4778.36mm^2 90mm tb 6361.72mm^2 Edited November 16, 2012 by canadianVRss (see edit history) Quote Link to comment Share on other sites More sharing options...
K.Brown Customs Posted November 16, 2012 Author Report Share Posted November 16, 2012 ahhh crap! so it doesn't just bolt right up? is there a adapter out there? or do I gotta fab it up? KB- Quote Link to comment Share on other sites More sharing options...
canadianVRss Posted November 16, 2012 Report Share Posted November 16, 2012 No it won't. Ls7/ls3/ls2 all have 4 bolt throttle bodies. We have 3 bolt throttle bodies. I believe there is an adaptor out there, seen a few for sale over on PT.net awhile back, but they sell fast. Quote Link to comment Share on other sites More sharing options...
chpspecial Posted November 16, 2012 Report Share Posted November 16, 2012 Adapter will only benefit you if you get the J-tube ported to the ls2/3/7 TB area. otherwise it will be a moot point to upsize the TB but your J-tube remains the same Quote Link to comment Share on other sites More sharing options...
K.Brown Customs Posted November 17, 2012 Author Report Share Posted November 17, 2012 now what about my MAF sensor? Quote Link to comment Share on other sites More sharing options...
1BAD2K Posted November 17, 2012 Report Share Posted November 17, 2012 Even with the maf, you are still gonna bottle neck at the tb and smaller j tube. Here the part you need. They're not too expensive. I think I paid like $150 shipped IIRC. Quote Link to comment Share on other sites More sharing options...
2003_SuperSport Posted November 18, 2012 Report Share Posted November 18, 2012 Even with the maf, you are still gonna bottle neck at the tb and smaller j tube. Here the part you need. They're not too expensive. I think I paid like $150 shipped IIRC. Where did you buy your j-tube? I would like one as well.... Quote Link to comment Share on other sites More sharing options...
1BAD2K Posted November 18, 2012 Report Share Posted November 18, 2012 I got it from a guy who sold his off performance trucks. I believe leftcoast32 sells them or used to anyways. Quote Link to comment Share on other sites More sharing options...
KrausMotorSports Posted November 19, 2012 Report Share Posted November 19, 2012 Wish they had a new j-tube for the side mount whipple 2.3! Have to port the whole thing! Owell! Lol Quote Link to comment Share on other sites More sharing options...
BLNAWAY Posted November 23, 2012 Report Share Posted November 23, 2012 correction, he will need to upgrade the J tube on the radix to a 90mm 4 bolt flange style to be able to run an LS7 TB. his 3 bolt flange 78mm wont accept the bigger TB unless some modifying is involved. And it not just a 12mm upgrade, its a 1584mm^2 upgrade. so yes worth it. Think of it this way, when your truck is at WOT, would you radder have it breath threw a tine straw, or a bigger one, in the case of a radix, it has proven to lower IAT because the radix works less to ingest air My bad forgot he was sc Quote Link to comment Share on other sites More sharing options...
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