BBK 1-3/4” headers with 2.5” ORY any good?
06-23-2018, 08:20 PM
#1
BBK 1-3/4” headers with 2.5” ORY any good? I have this on my 00 camaro and I am wondering when will this setup be a restriction or when would it be better to upgrade to a 1-3/4” or 1-7/8” headers with a 3” y pipe like from speed engineering?
Car has mainly bolt ones, nothing fancy and a stock cat back exhaust on it.
I may do a single 3” out the back exhaust one day and ls6 intake.
Maybe a small cam one day with a full tune
Car has mainly bolt ones, nothing fancy and a stock cat back exhaust on it.
I may do a single 3” out the back exhaust one day and ls6 intake.
Maybe a small cam one day with a full tune
06-23-2018, 09:04 PM
#4
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Restrictive in a significant way probably not till like 600-700 hp. Regardless of that you might as well go with the 1 7/8" headers since it doesn't really cost any more, and will support a little more potential down the road
06-23-2018, 09:16 PM
#5
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You will see gains stepping up to 1 7/8'' LTs and 3'' Y-pipe. If it were me id look at doing the Speed Engineering 1 7/8'' Lts, 3'' X-pipe, true duals, used FAST or TPIS 90mm snout LS6 intake, and 3:90 gears for the car.
06-23-2018, 09:21 PM
#6
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And just to give you a really fair back to back comparison, my buddy switched from Speed Engineering 1 3/4 headers to their 1 7/8 ones and picked up exactly 5 hp on the same dyno one week apart. It gained nothing down low until after around 4k. This was on a heads and cam LS1 as well
06-23-2018, 09:31 PM
#7
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And just to give you a really fair back to back comparison, my buddy switched from Speed Engineering 1 3/4 headers to their 1 7/8 ones and picked up exactly 5 hp on the same dyno one week apart. It gained nothing down low until after around 4k. This was on a heads and cam LS1 as well
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06-24-2018, 09:45 AM
#9
Well if there’s isn’t a significant gain you are saying at this time and with what I am going to do next to it.
*** next is just an ls6 intake, maybe a full single 3” exit exhaust and a full tune wether or not I do the 3” exhaust ***
i might as well keep what I got right now until I decide what’s next with a cam, heads then buy the larger headers.
I wished they made a full dual 2.5” exhaust setup as I’m not going for big power numbers on this daily.
*** next is just an ls6 intake, maybe a full single 3” exit exhaust and a full tune wether or not I do the 3” exhaust ***
i might as well keep what I got right now until I decide what’s next with a cam, heads then buy the larger headers.
I wished they made a full dual 2.5” exhaust setup as I’m not going for big power numbers on this daily.
