[Z06] LG SuperPros for C5
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Instructor
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From: Chicago Illinois
LG SuperPros for C5
Had my LG super pros installed and they made great power and amazing sound. Made 396 RWHP with LG super pros, bullets, intake and tune. I was just wondering why some LG super pros look different than these? Some look like their beefier which is the ones I wanted, could they not fit on the C5? I'm just making sure these are indeed the LG supers!
Tech Contributor
Joined: Jan 2004
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From: Wylie TX --> Less is More, except under the hood !
The difference is in the Diameter of the pipes exiting the motor.
LG Pro's = 1 3/4"
LG Super Pro's = 1 7/8"
They both have 3" collectors, and are a 3" pipe from the collector back.
If you measure the diameter of the pipes "before" the 3" collector that should tell you if its the Pro's or the Super Pro's.
Nice numbers by the way ! I made 390rwhp with my LG Pro's, Vararam, Bullets, and tune.
Toque
LG Pro's = 1 3/4"
LG Super Pro's = 1 7/8"
They both have 3" collectors, and are a 3" pipe from the collector back.
If you measure the diameter of the pipes "before" the 3" collector that should tell you if its the Pro's or the Super Pro's.
Nice numbers by the way ! I made 390rwhp with my LG Pro's, Vararam, Bullets, and tune.
Toque
Burning Brakes
Joined: May 2007
Posts: 829
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From: San Francisco CA
I'm pretty sure the Super Pros for C5 are still 1-3/4" but have the new merge collector and a velocity spike. We can't use the 1-7/8" because of the batwing oil pan, the 1-7/8" Super Pro's are for the C6's.
The difference is in the Diameter of the pipes exiting the motor.
LG Pro's = 1 3/4"
LG Super Pro's = 1 7/8"
They both have 3" collectors, and are a 3" pipe from the collector back.
If you measure the diameter of the pipes "before" the 3" collector that should tell you if its the Pro's or the Super Pro's.
Nice numbers by the way ! I made 390rwhp with my LG Pro's, Vararam, Bullets, and tune.
Toque
LG Pro's = 1 3/4"
LG Super Pro's = 1 7/8"
They both have 3" collectors, and are a 3" pipe from the collector back.
If you measure the diameter of the pipes "before" the 3" collector that should tell you if its the Pro's or the Super Pro's.
Nice numbers by the way ! I made 390rwhp with my LG Pro's, Vararam, Bullets, and tune.
Toque
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From: Newberry FL
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St. Jude Donor '07
-Micah
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Burning Brakes
Joined: May 2007
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From: San Francisco CA
Yes and no, I'm saying that i dont think LG offers the 1-7/8" for the C5 because the longer primaries won't fit around the oil pan in 1-7/8" , if you look at the picture above you can see the long primaries extend farther back. The 1-7/8" offered by ARH, Kooks and C6 1-7/8" LG Super Pro's are all are similar (shorter) in length. Go to website and take a look at the pictures and product details. I would suspect that cutting the length of the primaries for a bigger tube may not be worth the sacrifice in torque on the 5.7L that it may be for the 6.0, 6.2 or 7.0L.
Are you stating that the C5 can't use the "LG" 1 7/8" or any 1 7/8" setup due to the batwing oil pan? If that is the case, than you would be wrong, there are brands out there (KOOKS for one) that you can run their 1 7/8" LT on the C5 with no clearance issues, they are just a PITA to get in. I can't speak for the LG setup, that is why I asked.
-Micah
-Micah
Last edited by hardcore4sure; Sep 13, 2011 at 03:08 PM.
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From: Newberry FL
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St. Jude Donor '07
Yes and no, I'm saying that i dont think LG offers the 1-7/8" for the C5 because the longer primaries won't fit around the oil pan in 1-7/8" , if you look at the picture above you can see the long primaries extend farther back. The 1-7/8" offered by ARH, Kooks and C6 1-7/8" LG Super Pro's are all are similar (shorter) in length. Go to website and take a look at the pictures and product details. I would suspect that cutting the length of the primaries for a bigger tube may not be worth the sacrifice in torque on the 5.7L that it may be for the 6.0, 6.2 or 7.0L.
Drifting
Joined: Sep 2007
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From: Goldsboro NC
Yes and no, I'm saying that i dont think LG offers the 1-7/8" for the C5 because the longer primaries won't fit around the oil pan in 1-7/8" , if you look at the picture above you can see the long primaries extend farther back. The 1-7/8" offered by ARH, Kooks and C6 1-7/8" LG Super Pro's are all are similar (shorter) in length. Go to website and take a look at the pictures and product details. I would suspect that cutting the length of the primaries for a bigger tube may not be worth the sacrifice in torque on the 5.7L that it may be for the 6.0, 6.2 or 7.0L.
Burning Brakes
Joined: May 2007
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From: San Francisco CA
Nope, read closer 1-7/8 are for C6/Z06, could you get them to fit ? Probably but they aren't made for C5's, all the headers listed for C5's are 1-3/4" both the Streets and Super Pro's. The difference is not the header tubes, it's the collectors and the mid pipes. The 1-7/8" look more like Kooks or ARH with shorter tubes
Last edited by hardcore4sure; Sep 14, 2011 at 12:12 AM.
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Instructor
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From: Chicago Illinois
Are you sure? My buddy said they come in 1 7/8". He ran both on his C5 I believe. They make them bigger for if u plan on doing a heads/cam application. Measured mine out yesterday and it looks like they are definitely bigger than 1 3/4"
Instructor
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The 1 7/8" super pros are for the c6/z06 because they have a bigger displacement engine (not to mention higher compression). The 5.7 doesnt need 1 7/8" primaries unless it is a "wild" built engine or running some sort of forced induction. Hence why you made almost 400 whp with 1 3/4" headers. They are perfect for the non-built ls6. In fact, I bet your bottom end power would suffer with 1 7/8" due to lack of back pressure.
Burning Brakes
Joined: May 2007
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From: San Francisco CA
Like I said he may have been able to make them fit but they are not offered for a C5 specific application. Truth is that these cars are so close that it probably would fit with minor tweeking. But I wouldn't risk spending $1600 to possibly have to hack up a new set for minimal HP gains and lose TQ.
Melting Slicks
Joined: Sep 2003
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From: Northville Michigan
Are all of you aware that L.G. uses 1 3/4-inch headers on their race Corvette?
The only reason they made the 1 7/8-inch headers is because some buyers wouldn't listen to their data that says the 1 3/4-inch headers make better low and mid-range torque, while giving away very little at the top-end of the rpm range.
-
The only reason they made the 1 7/8-inch headers is because some buyers wouldn't listen to their data that says the 1 3/4-inch headers make better low and mid-range torque, while giving away very little at the top-end of the rpm range.
-
Last edited by Pumba; Sep 16, 2011 at 04:54 PM.
Instructor
Joined: Feb 2009
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Are all of you aware that L.G. uses 1 3/4-inch headers on their race Corvette?
The only reason they made the 1 7/8-inch headers is because some buyers wouldn't listen to their data that says the 1 3/4 make better low and mid-range torque, while giving away very little at the top-end of the rpm range.
-
The only reason they made the 1 7/8-inch headers is because some buyers wouldn't listen to their data that says the 1 3/4 make better low and mid-range torque, while giving away very little at the top-end of the rpm range.
-
B) Word
Burning Brakes
Joined: Jun 2009
Posts: 787
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From: New Baltimore Michigan
Bought mine fall of 2010 from LG and they told me the superpros are the new and improved pros better merge collector. they dont call them pros anymore now its superpros.
thats how i understood the sales guy at LG mine are 1-3/4''
Steve
thats how i understood the sales guy at LG mine are 1-3/4''
Steve
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The difference is in the Diameter of the pipes exiting the motor.
LG Pro's = 1 3/4"
LG Super Pro's = 1 7/8"
They both have 3" collectors, and are a 3" pipe from the collector back.
If you measure the diameter of the pipes "before" the 3" collector that should tell you if its the Pro's or the Super Pro's.
Nice numbers by the way ! I made 390rwhp with my LG Pro's, Vararam, Bullets, and tune.
Toque
LG Pro's = 1 3/4"
LG Super Pro's = 1 7/8"
They both have 3" collectors, and are a 3" pipe from the collector back.
If you measure the diameter of the pipes "before" the 3" collector that should tell you if its the Pro's or the Super Pro's.
Nice numbers by the way ! I made 390rwhp with my LG Pro's, Vararam, Bullets, and tune.
Toque
