Ordered thorley's today...
#3
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Originally Posted by 1slow01Z71
Why did you go with those instead of true lt headers?
#4
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I wouldn't be too sure that the length of the primaries were sized to produce the most torque, you'll notice that they fit just perfectly infront of the cats. Take a true 32'' long tube header like the LG Pros for the Corvettes... These bad boys make some torque... On a '01-'04 ZO6 some of the guys are showing a 40TQ gain.
Shorter primaries are usually tuned to make power within a certain range at higher RPM. There are header primary calculators all over the internet.
Now, if the Tri-Y stuff really works... I don't know... If it does make more torque... That's a plus for sure.
BTW, I'm using those headers.
Shorter primaries are usually tuned to make power within a certain range at higher RPM. There are header primary calculators all over the internet.
Now, if the Tri-Y stuff really works... I don't know... If it does make more torque... That's a plus for sure.
BTW, I'm using those headers.
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They are a follow-the-firing-order,almost-true 180 degree header from what I've heard/read. They are supposed to give better torque gain than a non tri-y header of the same length. I read that they were designed for trucks and motor homes to give them some extra pull.
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Damn those are
J/K
I'm sure they will be a nice addition to the truck.
The truth is, noone has any dyno info at 2000rpm for these different headers.
The only pacesetter dyno with 2000 rpm I've seen is from a LS1 and the torque was exactly the same as stock. Then again, who knows how well these are tuned before and after.
We need a decent comparison and dyno results at low rpm.
I just got my pacesetters from jethot today.
I may dyno it after they are on, but won't be able to get a before dyno to compare.
I can't believe it's taken 7 years to get as little decent header info as we have.
J/K
I'm sure they will be a nice addition to the truck.
The truth is, noone has any dyno info at 2000rpm for these different headers.
The only pacesetter dyno with 2000 rpm I've seen is from a LS1 and the torque was exactly the same as stock. Then again, who knows how well these are tuned before and after.
We need a decent comparison and dyno results at low rpm.
I just got my pacesetters from jethot today.
I may dyno it after they are on, but won't be able to get a before dyno to compare.
I can't believe it's taken 7 years to get as little decent header info as we have.