Long tubes vs. shorties
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Record Breaker
Joined: Feb 2006
Posts: 1,567
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From: Richmond, Va
RE: Long tubes vs. shorties
ORIGINAL: HankL
I don't believe that shorties are a 'waste'
I think nearly all headers give a 3-6% torque gain
with short degrees of overlap camshafts near 3%
and long duration overlap camshafts near 6%
The length of the primary pipe just determines
at what rpm this gain occurs
short = high rpm (which is fine for racing)
long = mid rpm
Since we are talking about trucks
my own opinion is that the torque gain
should be in the 1500 to 2500 rpm range
and this takes Tri-Y design
with "super long" primary lengths 42 to 55 inches long
which means custom headers.
I don't believe that shorties are a 'waste'
I think nearly all headers give a 3-6% torque gain
with short degrees of overlap camshafts near 3%
and long duration overlap camshafts near 6%
The length of the primary pipe just determines
at what rpm this gain occurs
short = high rpm (which is fine for racing)
long = mid rpm
Since we are talking about trucks
my own opinion is that the torque gain
should be in the 1500 to 2500 rpm range
and this takes Tri-Y design
with "super long" primary lengths 42 to 55 inches long
which means custom headers.
Thread Starter
|
Record Breaker
Joined: Feb 2006
Posts: 1,567
Likes: 0
From: Richmond, Va
RE: Long tubes vs. shorties
^
Not an exact measurement.I wasn't feeling ambitious enough this morning to reach down in there with anything other than a tape measurer. Maybe a call to Pacesetter would give a better measurment.
Not an exact measurement.I wasn't feeling ambitious enough this morning to reach down in there with anything other than a tape measurer. Maybe a call to Pacesetter would give a better measurment.
