1 3 4 Vs 1 7 8 Headers 1 7 8 is WAY to big for a 5 3 unless your pushing over 500 hp and blown and running the motor at 6000 rpm non stop what little bottom end TQ the 5 3 has will be lost
1 3 4 are perfect for a stock or even a head cam intake car 1 7 8 are for when you get into bigger cubic inch motors like 402ci 408ci i would stick with the 1 3 4 or you will loose a lot of low end and midrange power hope this helps man Check out this video where i compared 1 3 4 inch long tube headers vs 1 7 8 inch long tube headers with two different cams btr truck norris and sloppy best cam I ALSO TESTED THE EFFECT OF COLLECTOR
1 3 4 Vs 1 7 8 Headers
1 3 4 Vs 1 7 8 Headers
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1 3 4 headers are for staying NA and 1 7 8 if you plan to supercharge the car 1 7 8 has more power in the top end im guessing 4500 or 5000rpm to redline compared to 1 3 4 When i bought my ARH longtubes i asked a few tuners about the differences between 13 4 and 1 7 8 and one JDM swore to me me that everytime you have have a car
Recent independent tests between our LG Pro Long Tubes vs the 1 7 8 headers have shown only a 1 2 hp difference for only the top 400 rpms while the low end torque and 1 3 4 headers have a smaller diameter than 1 7 8 headers affecting how exhaust gases flow through the system 1 3 4 Headers Suitable for lower horsepower applications enabling quicker exhaust gas velocity 1 7 8 Headers Ideal for
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The 1 7 8 headers outperformed through the entire rpm range and didn t kill any bottom end The difference on this stock engine wasn t much however single digit HP and TQ The 1 7 8 For an NA build is it better to use 1 3 4 or 1 7 8 headers or even 2 headers What are the effects on low and mid range torque either way
The 1 7 8 headers made a peak hp of 414 x hp 421lb ft while the 1 3 4 headers made 408hp 419 lb ft of torque While this isn t a huge difference it definately shows that Based on the Eagle head flow the 5 7 cam profile displacement and HP you are good with 1 3 4 headers Just in case you aren t aware you will need to have your car tuned
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1 7 8 is WAY to big for a 5 3 unless your pushing over 500 hp and blown and running the motor at 6000 rpm non stop what little bottom end TQ the 5 3 has will be lost
https://www.ls1.com › forums › showthread.…
1 3 4 are perfect for a stock or even a head cam intake car 1 7 8 are for when you get into bigger cubic inch motors like 402ci 408ci i would stick with the 1 3 4 or you will loose a lot of low end and midrange power hope this helps man
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1 3 4 Vs 1 7 8 Headers - Recent independent tests between our LG Pro Long Tubes vs the 1 7 8 headers have shown only a 1 2 hp difference for only the top 400 rpms while the low end torque and
