03-01-2022, 04:11 PM | #1 |
Drives: 2018 2SS 1LE Join Date: Feb 2018
Location: Los Angeles
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LT5 95mm to MSD
I'm confused if you can run a stock LT5 throttle body to an MSD (pray ported but believe that's just the runners) directly without adaptor?
Bought an MSD and LT5 tb off someone locally and he had them bolted up without an adaptor but it seems the MSD is a 103mm opening? Looking to clarify before installing both.
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03-01-2022, 05:57 PM | #2 |
Drives: 2018 1SS 1LE Join Date: Dec 2012
Location: NY
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The 95 can bolt up if the holes are opened slightly. If it’s a pray ported 95 the holes would have been opened.
Last edited by NYblack1le; 03-01-2022 at 06:10 PM. |
03-01-2022, 06:00 PM | #3 |
Drives: 2022 Lt1 A10 Join Date: Nov 2015
Location: clark, mo
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You can for sure as I did on my C7 Corvette. I would not run an adapter, if the holes are opened then use a Dremel to open them up as needed. Thats what I did, took me about 30 minutes and you can use your stock TB for the pattern. Its easy.
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03-01-2022, 06:17 PM | #4 |
Drives: 2018 2SS 1LE Join Date: Feb 2018
Location: Los Angeles
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If i run my finger from throttle body to msd opening past the blade when they're bolted together you can feel the drop off as it goes from 95 -> 103mm. Wondering if this sudden opening vs having it tapered with an adapter will affect the performance?
I guess someone opened up the holes slightly because it's currently bolted to the MSD without an adapter
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03-02-2022, 07:06 AM | #5 |
Drives: 2022 Lt1 A10 Join Date: Nov 2015
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The unless the adapter is also ported it is a restriction and you don't want that. If it's bolted up without the adapter use it that way. Pretty simple swap you can do in an hour or so with all the shitty covers off.
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2022 Lt1 6.2 A10, Maggie 2300, THPSI Port Inj/10 rib, Rotofab, E, Nickey, SCOL, Griptech, RC Bandits, Hoosiers/MT 9.80@142.96 1.44 60ft, 6.34@112 707/669 RWHP/TRQ. 16SS Maggie 2650 9.41@147 1.35 60ft, 5.99@119. 16 C7 A8 10.90@128 Bolt on stuff
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03-02-2022, 07:14 AM | #6 |
Drives: like an old lady Join Date: Jun 2012
Location: indiana
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i don’t know that the adapter is much of a restriction on an unported LT5 tb. i don’t recall mine (ict) jutting into the opening. i will say that having the adapter in there pushes the rotofab tube out just enough to be a pain in the ass when it comes to seating the air box.
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03-02-2022, 09:19 PM | #7 |
Drives: 2018 Camaro SS 1LE M6 Join Date: Oct 2018
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The larger snout opening is not a restriction with the smaller throttle bodies. There are two different adapters. One is merely to adapt the 95mm without the hole elongation to the msd or Holley. Those adapters are not restrictions. The second is the one that allows the use of the 95mm to the stock IM. Those neck down the inlet and restrict flow. Unless someone like Pray ports the snout to accept a 95mm TB which is pretty difficult.
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03-09-2022, 02:50 PM | #8 |
Drives: 2017 1SS 6spd Join Date: Jan 2011
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OP I've been running a 95mm TB (unported) to the MSD IM (also unported) for some time without any issues in drivability and zero error codes. She runs strong and smooth IMHO.
But I have become aware of Soler's inexpensive 95 to 103 ported adaptor that holds the TB centered in the MSD opening and smooths the transition between the two. I've always been a fan of laminar flow (as opposed to turbulent flow), but it appears the consensus of C6 members is it is not a restriction or cause for a loss of performance. Basically, I'm looking for an excuse to buy a small piece of Soler stuff just for bragging rights and peace of mind. I had to get rid of the "crushed" portion of the exhaust for the same reason- despite valid protests that it gained nothing. But that's just me. Opinions please...? and thanks. |
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