421 or 4 to 1 Manifolds
02 November 2001, 01:43 PM
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As a quick rule of thumb:
4-2-1 manifolds will give you more torque with improved bottom and mid range, whereas a 4-1 is an out and out race manifold and will give noticeable improvements at the top of the rev range.
Hope this helps,
Ken
4-2-1 manifolds will give you more torque with improved bottom and mid range, whereas a 4-1 is an out and out race manifold and will give noticeable improvements at the top of the rev range.
Hope this helps,
Ken
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