Volvo RWD 444-544 Forum

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B18 B20 Dual Downdraft Exhaust Manifolds 444-544

Hi all.

How is the B18 dual downdraft exhaust manifold (individual unit, not one-piece-intake-exhaust) different from the B20 dual downdraft exhaust manifold (individual unit, not one-piece-intake-exhaust)? Are they the same in terms of flow diameter and performance, or are they different?

Ry
PDX
'63 544






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New B18 B20 Dual Downdraft Exhaust Manifolds [444-544]
posted by  West Coast 544  on Thu Dec 15 16:22 CST 2011 >


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