tti headers
FWIW, here is a dyno comparison of everything from OEM cast iron manifolds to straight 1 3/4" headers. from a Hot Rod magazine article. Done on a 300hp 360, the gains over straight 1 5/8" headers would be even greater an an engine with more HP. Since they are better pretty much throughout the entire operating range, even small numbers will improve acceleration. Peak isn't as important as "area under the curve".
I don't know if they optimized jetting for each change, but it should be considered anytime anything is done to change anything related to the air going into or out of an engine. (I.E.: air filter, spacers, cam, headers, exhaust system size/style, etc.
Obviously it's up to you to make the final determination as to what is worth how much to you. The variety of opinions on stuff like this are helpful either way. I have to admit that I am a little biased because the value of little gains is higher for me because of my class. I don't know if you would gain a tenth of a second on your car with TTI's over Doug's and you may not be able to feel it in the seat of your pants. But it would be worth it to me. Also, any future improvements to your car will be more beneficial if you weren't limited to 1 5/8" straight tubes.
At least crackedback and I agree that 1 7/8" is too big. :thumbrig:
FWIW, here is a dyno comparison of everything from OEM cast iron manifolds to straight 1 3/4" headers. from a Hot Rod magazine article. Done on a 300hp 360, the gains over straight 1 5/8" headers would be even greater an an engine with more HP. Since they are better pretty much throughout the entire operating range, even small numbers will improve acceleration. Peak isn't as important as "area under the curve".
I don't know if they optimized jetting for each change, but it should be considered anytime anything is done to change anything related to the air going into or out of an engine. (I.E.: air filter, spacers, cam, headers, exhaust system size/style, etc.
Obviously it's up to you to make the final determination as to what is worth how much to you. The variety of opinions on stuff like this are helpful either way. I have to admit that I am a little biased because the value of little gains is higher for me because of my class. I don't know if you would gain a tenth of a second on your car with TTI's over Doug's and you may not be able to feel it in the seat of your pants. But it would be worth it to me. Also, any future improvements to your car will be more beneficial if you weren't limited to 1 5/8" straight tubes.
At least crackedback and I agree that 1 7/8" is too big. :thumbrig:
