After running the TPIS and now the LGM headers, I must say that Lou's headers are a great product. The primaries are a good 18" longer than any others (as dyno proven by GM racing) and we help prove them ourselves with a win a Mosport last weekend. I have no financial link to Lou, but he runs a strong race team, and the product is really really nice. The cost is a little higher, but if you are going to commit to this mod, keep them in mind. .

Dave

 

Is there a noticeable power difference between the LGM and TPIS?

 

[Modified by bparker, 4:21 PM 5/26/2002]

 

TPIS vs. LGM:
http://204.0.73.225/LGM/headers/temp2.jpg

 

Am I reading that right? A 19 horsepower difference?! :eek: How?

 

That is the magic of having a true LT and true equal length header design. Even though the TPIS are 'LTs', the 'LGs' are longer and I do believe they are equal length which the TPIS are not. Anyone please chime in if I am wrong.

In Daves case, I believe that his LG setup has the merge collector that the 4 pipes go into which is suppose to be a real trick piece... which also means more $$$.

Also, 'your mileage may vary' as to the hp increase. The 19hp difference in the dyno above is on a modified engine where headers will make a bigger difference over stock.

I wish I had the cash, cause the LG LTs look like a winner.

Don
[Modified by don527, 7:25 PM 5/26/2002]

 

There was a controversey over this and according to JW they were not really a big gain at all. I beleive he alluded to skulldugerey. Buyer beware.

 

QuickSilver97,

I agree. How can any header over header gain provide a 19 hp difference?

Shawn

 

NO possible way there is a 19hp difference over another quality 1 3/4" LT Header. I have DRM 1 3/4" LTs and I know they just tried a set of LGMs on a DRM 427. I will get some feedback.

That said, I think the LGM Headers are great and I would strongly consider them IF I did not already have headers.

 

Mako,

Very nicely put.

You always have a way with words!

Shawn

 

I replaced my TPIS headers because they fell apart. However, the GM Racing engineers swear by the longer primaries, the merge collectors, and the SS is a plus. Katech is now using LGM's headers for their dyno, and my power band is amazingly broad.

Will post dyno #'s when I get a chance, but we WON the Mosport race, one of the biggest HP tracks in North America!

Dave

 

So these headers can produce upwards of 40hp? If so awesome. Too bad theyre so expensice though

 

First of all, the 19rwhp and 22 rwtq increase was real, and they were back to back. The TPIS had a cross over pipe, and the LG Headers had an "X" pipe, plus our racing Merge Collectors. These collectors come with every set of headers now.
The engine that they were on was a 418ci stroker. but you can check our Darren Brown's post (Viscious)
http://forums.corvetteforum.com/zerothread?id=314393
and you will see that he gained 22 rwhp and 24 rwtq with the LG headers.
And his car is dead stock.

And to say that any header cannot make 19rwhp over a TPIS, means that you have nerver really looked closely at a TPIS header. I know that if I make a new header system for my race car, I can lose 20hp with a minor change in length of the primarys or the secondarys Plus the collector length, diameter, and flare can make or break your horsepower. There is more to headers that one might think.

And finally, we regularly get 430 to 438 rwhp and 420+ rwtq on our G5 Cam, heads and Header packages. We never came close with the TPIS or Balangers. We are doing a car now with TTS, so we will see what the numbers are with those headers.

So David Farmer beat the best in the World Challenge, with his new engine package, and our LG Motorsports Long Tube SS Headers. He drove a fine race. He had the Torque that he needed, and did a great job. We are very happy that David Farmer and Katech engines have chosen our headers.

Have a nice day, and keep those cards and letters coming.

Lou Gigliotti http://www.lgmotorsports.com

 

I think it is safe to say that this is with a very modified engine. I'd bet that with a stock (or just a cold air intake) the difference would be very minor compared to other headers. Any comments on that, Lou? I'd be curious what you would get on an otherwise stock LS1.

 

J,

There is a link to Darren browns dyno numbers above. And you are correct when you say that the more modifications the greater good that will come out of a better set of headers. You don't need a "fire hose" for your "back yard faucet".

Later,

Lou Gigliotti

 

:blueangel:


[Modified by Godspeed, 10:53 PM 6/5/2002]

 

damn, i want the LG headers. BAD.

 

Wouldn't be great if we could have an independent organization test and evaluate different products on a mule C5 to put the continuing controversies to bed whether it’s headers, intakes or whatever. I have no opinion on the increases or decreases between one make or another for testing conditions and vehicles could change. We all seem to beat this around since the beginning of time ;) Someone who doesn’t have any professional relationship with the manufacturers could do this testing!… Just give everyone the facts and keep out the opinions with the testing… Does anyone agree with me??? One thing for sure, they are all decent products that individuals have available to them here... :yesnod:

Nick

 

This seems like the only controversy I've heard of. Everyone else that I know of (from reading this board) that has them has had great results. I wouldn't put much thought into what 1 person has to say about them. :jester

 

Keep in mind that Lou's Headers come with a set of High-Flow Cats..That alone has to be worth 10 HP.

They must sound great !

:cheers:

Jeff