Do shorty headers outflow the stock 2002 manifolds?
Generally yes — Speedway says even short-tube headers usually flow better than a stock manifold, though not nearly as well as long tubes.
The gap is small, so the decision usually comes down to cost and looks: new shorties look better than rusty manifolds and may bring small improvements in sound and power. If you're after real power, long tubes are where the gains are. See long tubes vs shorties.
Confidence: medium — sources disagree or are limited; check the sources below.
Community discussion
Related questions
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- How much power do long-tube headers really add?
- Long tubes vs shorties — which headers should I buy?
Sources
- Exhaust Manifolds vs Headers: How Much HP Do Headers Add? — Speedway Motors