throwit

Potentially in the market for a set and I have been trying to find a comparison between the two but it seems very difficult. Anyone know (for certain) which one makes more HP / TQ?

J.R.

Haven't seen direct results between those two but have seen some results between the Pfadt Tri-Y and other headers. Not tremendous difference on top end (maybe plus 3-5 HP for Tri-Y's) but torque was approx. 20+ ft lbs different (greater for Tri-Y's) in a C6 ZO6.

I experienced approx. the same numbers difference in a previous SBC race car in which I tried both straight 1 5/8 and 1 5/8 Tri Y's except I lost approx. 7 HP on the top end and gained approx. 20 ft lbs of torque in an approx. 500 HP engine. This was awhile ago and the knowledge and technology is a lot better today.

Contact Jordan at JDP Motorsports as I think he may have done some testing with Tri-Y's.

Both LG and Pfadt make good products and are obviously Corvette guys.

RHC6

What I see is their graduation of tubes from 4 to 2 to 1 makes a real difference in the 3-5000 rpm range. You will see an increase of
roughy 30 ft lbs of torque in the 3 - 5000 rpm range vs others.
I like this as I am in that range a lot more the 6-7000 rpms !

trackboss

These are pretty slick:

http://www.profabrication.com/produc...&attValID=5721

throwit

30 ft-lbs over the LGs?? Sounds like allot. Im not really concerned with "others"...specifically LGs.

LG Motorsports

Guys,


We have done back to back tests and I suggest you do your own tests to get by the hype. We have used Pro Fab Tri Y headers on our race cars but they are not the same as any "so called" Tri Y made to fit a street car. Plus they cost $3500 just for the headers alone.
Our 1 3/4 headers make the most torque at the bottom end and they lose 5-7 power at the top. that is typical of any smaller tube header.
Consider your RPM range that you want to improve and pick your poison. Nothing is free so for more torque down low, you will probably give up some HP at the top. Which means that you might need one set of headers for the street courses and another version for tracks with long straights. (races are won on the straights)

Then there is the one part on the car that is guaranteed to increase your HP on any part of the track. That part is the Right pedal. The more you push it down, the more HP you will see hit the track

Let us know if we can help you with any of your goals.

Thanks

Lou Gigliotti
LGM

throwit

Seems that many feel the Pfadts make more torque. Is there a way you could please find time to do/post a dyno comparison between the 2 (as you did with Kooks and ARH)? Im sure it would help many (including myself) make a decision and remove the guesswork.

z060ntrack

American Racing Headers is another great option with a totally different approach

http://www.americanracingheaders.com/

davidfarmer

LG's have the longest primaries on the market, and offer great torque. The design was done by GM racing in the late 90's, and they have always worked well for me. I look forward to trying the Pfadts (as I always enjoy using their products) but I have no worries recommending the LG's, especially the Pro's. I haven't used the street line.