headers
#1
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Join Date: Oct 2013
Location: SunValley CA
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headers
Ok in the progress of buying some headers what I want to know if I should go with the 1-7/8 or 1-3/4 from PaceSetter and what's the difference goung on a 04silverado 5.3 crew cab
#3
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I agree…..
Generally speaking, if you’re pushing 500 or more horsepower at the flywheel I would tend to say you would be looking at the 1.875” primary tube models and 300-500 hp at the flywheel 1.750” primaries, with anything under 300hp ideally served by using 1.625” primaries. The problem with that is you won’t likely find many long-tube headers in 1.625” for a Gen III/IV equipped vehicle if at all. It won’t make that big of difference to worry about though and will leave you room to grow and besides just about everything from a 5.3L up makes close to that at the flywheel anyway.
Generally speaking, if you’re pushing 500 or more horsepower at the flywheel I would tend to say you would be looking at the 1.875” primary tube models and 300-500 hp at the flywheel 1.750” primaries, with anything under 300hp ideally served by using 1.625” primaries. The problem with that is you won’t likely find many long-tube headers in 1.625” for a Gen III/IV equipped vehicle if at all. It won’t make that big of difference to worry about though and will leave you room to grow and besides just about everything from a 5.3L up makes close to that at the flywheel anyway.
Last edited by 1Bear; 12-03-2013 at 03:44 PM.
#4
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I agree with bear... but 1.5 may be a little small. What about a Thorley that is a 1 5/8" tri-y design? I think that would be one of the better options at stock power levels.
Basically, unless you see a supercharger in your future, go with the 1 3/4" lt's. They will be better for NA power on a 5.3.
Basically, unless you see a supercharger in your future, go with the 1 3/4" lt's. They will be better for NA power on a 5.3.
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