Longtube Headers
This will be my next mod....just gotta figure out which ones to get.
The options I see are:
1) LG Motorsports. Seems to be the best, but I haven't seen any before/after dyno's on a heads/cam car. Hrm. I'd also like to know how well their cats flow and how it affects dyno numbers. Highest price range.
2) TPIS. These seem to be the ones MTI pushes. These require welding, right? What gets welded? How hard are they to remove? I need longtubes *I* can remove in my garage as I wish, and i'd like to not have to weld stuff back up every time. Lowest price range.
3) FLP's. I liked my FLP's on my F-body, but ground clearance was affected and I was annoyed they didnt stud the AIR pipe flanges. No biggie. How are these on the vette, and what if you already have an X-pipe, etc? Will they sell a more minimal package? Middle price range.
Any other options worth noting? My car is slammed as you can see in the pic...so any loss of ground clearance is unacceptable.
<img src="http://home.austin.rr.com/jmx/jmxc5.jpg" alt=" - " />
<small>[ June 21, 2002, 03:14 PM: Message edited by: jmX ]</small>
To add one more thing, TPIS is now selling a cat pipe to complete the headers to the catback so you dont need to cut or weld any pipes, it comes with new high flow cats.
I dont think this is on their website yet, but its in the new catalog, and I talked to Myron in person about this.
Eric (planning to purchase in 1-2 months)
I do <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
Which ones do you have? How do you like em? Do they require welding? Did they come with cats?
FLPs. They're kick ***. I had TPIS before and FLPs blow them away in quality. No welding, complete bolt on system. They come with cats, ORPs, x-pipe, new header bolts & gaskets and the rest of the various clamps and bolts needed for a complete install.
The options I see are:
1) LG Motorsports. Seems to be the best, but I haven't seen any before/after dyno's on a heads/cam car. Hrm. I'd also like to know how well their cats flow and how it affects dyno numbers. Highest price range.
WhitneyR lost 20RWHP/20RWTQ with LGM's headers on his VetteDr's H/C package, all installed by the VetteDrs. Also, I'm 90% sure they hang pretty low <img border="0" title="" alt="[Sad]" src="gr_sad.gif" />
2) TPIS. These seem to be the ones MTI pushes. These require welding, right? What gets welded? How hard are they to remove? I need longtubes *I* can remove in my garage as I wish, and i'd like to not have to weld stuff back up every time. Lowest price range.
Yes, same as RKsport ones too. Definately need welding. The pipes in front of the factory cats are cut off and welded to a supplied miniscule H-Pipe that acts as a slip fit into the TPIS collectors. Mine had to be tack welded to stay in place in the collectors and they leaked <img border="0" title="" alt="[Sad]" src="gr_sad.gif" /> If you plan on taking them off/on alot these will be difficult. Go to: http:/www.tpis.com and look at their install instructions to see the piece they weld together.
3) FLP's. I liked my FLP's on my F-body, but ground clearance was affected and I was annoyed they didnt stud the AIR pipe flanges. No biggie. How are these on the vette, and what if you already have an X-pipe, etc? Will they sell a more minimal package? Middle price range.
You have PLENTY of ground clearance, just a tad more than the TPIS I had on my C5. Super easy to install. They only sell the complete kit. If you have an x-pipe already, just sell it. The FLP one is very nice and the whole system is coated end to end <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
Get the FLPs, you wont be sorry <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
This is with the cats on! I went from 308 RWHP to 335 !!!! <img border="0" alt="[Z06 Corvette]" title="" src="graemlins/z06.gif" />
<small>[ June 24, 2002, 04:48 PM: Message edited by: Mike TexaSS ]</small>
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<strong>How much are these different sets? What's the price range look like I mean?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">TPIS, RK, MTI - $799-9xx just headers
LGM - $1500 I believe for just the headers, no high flow cats.
TTS - 1 5/8" primaries, $1200
FLPs - 1 3/4", has cats, orps, x-pipe, all clamps, hardware, new bolts, gaskets, etc $1599
The Best V8 Stories One Small Block at Time
Breathless performance (my choice because of the step design)
Borla (brand new but I am not sure of availability yet)
TTS (smaller primaries at 1 5/8s but inexpensive and seem to produce good numbers on aquaintences cars)
SLP (supposed to be making a set, but I could be wrong)
Just depends on the mods......
As for the clutch I make 500RWHP and have made well over 150 passes on my stock clutch. It is time for a new one, but take into consideration all my driving too. This was also done on spray.
I went with the RAM 900 Series disc, pressure plate, flywheel, and adjustable master. (around 750 bucks total)
Not to knock the Star, but alot of friends have had problems with it. When the disc starts to wear there is no way to get the air out...and in return you are left with a hung or dead pedal!
The original design of the LG Longtubes (32"primaries) had a couple of problems going from our prototype to the production headers.
All of these issues have been corrected now. We had a very inefficient collector, which has now been changed to a racing merge collector. We also had some air leaks with the first Merge collectors. The leaks caused the O2 sensors to read lean, and then the PCM would richen the mixture up, and lose hp. All of the early problems have been solved now. some of the early users who had problems were not willing to wait to have the problems fixed. Our design was always good, but our execution was lacking in the early days of production.
On the Horsepower side. Katech did a back to back dyno test against the TPIS. The Tpis had a crossover pipe, but they didn't get one installed on our LG Long tubes for the test. In spite of that, the LG headers were UP 30 ft lbs of torque at 2800rpm OVER the TPIS and had more hp through the entire range until the last 400rpms, where the hp was roughly equal, with a shlight edge to the Tpis. The addition of a Crossover or "X" pipe usually nets about 10 flywheel hp and more mid range torque., This would confirm our own chassis dyno numbers that put the LG headers higher than the Tpis at 27rwtq and 22rwhp.
Katech now recomends ONLY our LG Stainless headers to their customers.
The LG Headers now do not require any welding, and are a complete bolt up package. They are made of 304 aircraft stainless, which will NEVER rust, and they are available with or without interchangable cats. The system can be purchased with off road pipes, and the cats can be purchased later. They require one cut to the middle pipe to allow the full bolt up or we can supply you with a SS middle pipe to make a full bolt on all the way to the cat back flange.
Katech has no affiliation with LG Motorsports. They built the LeMans winning Corvette engines, and they only want the best for their engines. They now recomend the LG Headers.
Thanks,
Lou Gigliotti LG Motorsports.



