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TVS 1900 vs radix mp112

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Old Nov 16, 2009 | 09:23 PM
  #11  
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think I could hit 10's in a 3200 pound car, with full bolt ons, and a 2.9 pulley? and ls6 cam.

BTW, I got my mp112 with everything in the kit for $1500
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Old Nov 16, 2009 | 09:25 PM
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i hope so!

you'd want all the supporting mods of course, fueling, tuning etc.
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Old Nov 16, 2009 | 09:38 PM
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Originally Posted by trever1t
i hope so!

you'd want all the supporting mods of course, fueling, tuning etc.
tune for sure, in using 60# injectors, it comes with a fuel pump in the kit also.
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Old Nov 16, 2009 | 09:39 PM
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Originally Posted by old motorhead
The 1900 is bigger (same size as mp122) and is capable of more boost before heating things up too much. Compared to a 112, it's just bigger and better all over. You can use a little more cam with the TVS. Anything bigger than a mild cam is kind of a waste with a 112. A big cam might sound good, but the numbers aren't there if you're already pullied down to a 2.9" drive pulley.
The TVS1900 is about 115 cid, not 122. Also, not only is the compressor more efficient, but the intercooler core is 30% bigger then the 112's. That's one of the reasons for the lower IATs
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Old Nov 16, 2009 | 10:29 PM
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wow, I wish I would get this type of feedback everytime I posted a thread, thanks guys.
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Old Nov 17, 2009 | 09:22 PM
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I replaced my MP112/2.9" pulley setup with a TVS1900/2.9 pulley setup (all on a 6.0L motor). My peak boost went from ~8.4ish to ~9.0.

The 112 is a great kit. Big HP gains with a nice setup and like others say, gobs of power down low. It feels and shows on my scan that the 1900 creates about a pound of boost less in the first second of a launch than the 112. But because the 1900 is just kicking the 112 *** in IAT efficiency it allows you to keep good timing in the setup late down the track. The radix is still a great setup IMO, especially for the prices you can snag one up.
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Old Nov 17, 2009 | 10:21 PM
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Originally Posted by dewmanshu
I replaced my MP112/2.9" pulley setup with a TVS1900/2.9 pulley setup (all on a 6.0L motor). My peak boost went from ~8.4ish to ~9.0.

The 112 is a great kit. Big HP gains with a nice setup and like others say, gobs of power down low. It feels and shows on my scan that the 1900 creates about a pound of boost less in the first second of a launch than the 112. But because the 1900 is just kicking the 112 *** in IAT efficiency it allows you to keep good timing in the setup late down the track. The radix is still a great setup IMO, especially for the prices you can snag one up.
I'm curious if running a 2300 would build boost quicker, more like the 112, while at the same time shooting for the same peak boost # as a 1900? Have the thermal efficiency of the 1900, and the off idle boost of the 112. Or am I dreaming here? Just a question as I am looking at building a custom "revver" shortblock for my GTO, and was looking for something that would give me back some of my torque down low as I would be using a 4.8 3.266" stroke crank and loosing some bottom end torque. 5.1L 311.6 cubic inch (3.898" x 3.266").
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Old Nov 18, 2009 | 03:01 AM
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Originally Posted by firechicken76
wow, I wish I would get this type of feedback everytime I posted a thread, thanks guys.
Speartech has an older Camaro with an LS1/MP112 transplant that went 10.90s IIRC. I can't remember the exact combo but, it's close to what you are talking about for your project!
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Old Nov 18, 2009 | 10:20 AM
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Originally Posted by XLR8NSS
Speartech has an older Camaro with an LS1/MP112 transplant that went 10.90s IIRC. I can't remember the exact combo but, it's close to what you are talking about for your project!
Thats who Ive been talking to about getting this going, my build is following theirs, same supercharger, motor, and mods for the most part...

without them I probably never would of attempted this, they told me it wont be that difficult to get it running, and not much modification is required. fortunatly the 3rd gen doesnt have the engine under the windshield like the 4th gens, so fitment issues wont be a problem.
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