Thorley vs OBX
10-17-2008, 07:20 AM
#11
if you want to keep your low end power, go with the Thorley's. sure pacesetters, or any long tube header for that matter, give you great gains in the mid-to-high rpm, but i found you do lose some power down low. i have heard nothing but good things from people that own Thorley's.
I'll say it one more time.
Pacesetter LTs improve low rpm torque noticeably.
60K mi. on mine, still happy.
10-17-2008, 08:27 AM
#12
Staging Lane
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Living in ND, I see snow and ice six months out of the year. So I just dont know how long the pacesetters would hold up. And it seems like the OBX have fitment issues in the 4wd trucks. I've been leaning towards the Thorleys from the start but I love getting info from people with experience. Thanks guys and keep the posts coming!
10-17-2008, 08:37 AM
#13
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Pacesetter's are the way to go unless money is no object...basically they all do the same thing...especially on a more or less stock truck. More thought should be put into something like John's setup but he's running a boosted 6.0. on a stock 5.3 it's not going to make any difference for a DD truck. Get yourself a tune and the pacesetter's for the same price as a set of stainless works or ASM lt's.
10-17-2008, 10:18 AM
#14
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When I had my 01Yukon, I put the Thorley's on it, upgraded the trans and shift points. I did that because I needed low end torque. I pulled a 7500lb enclosed trailer and it was able to keep the car in OD at 75 mph on flat and rolling highway. That was my goal and they worked very well. Today I pull the trailer with a 04 Escalade 6.0L with the same trans mods and it pulls exactly the same. The E has 50 more ft-lbs of torque but the Thorleys and a 200lb weight difference made the 5.3L pull the same. HTH
10-17-2008, 02:19 PM
#17
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Living in ND I don't think the Pacesetters will last. And from what ive found on pt.net the OBX don't fit the 4wd trucks very well. Other options out there though.
