Quote:
Originally Posted by ULTRAZLS1
Long tubes arent showing as good of gains as the ls3 because the 5.0 comes with mid length headers from the factory.
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For the record, the 1986 Mustang GT introduced "tuned" tubular exhaust manifolds to the original 5.0L engines. The "headers" on the modern factory 5.0 are certainly better than the cast iron exhuast manifolds featured on previous modular motors, but suggesting you won't see significant gains with longtubes on the new motor is disingenuous.
