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  View original topic: Dual port vs Single...
darkminstrel@hotmail.com Mon Jul 21, 2003 9:36 pm

What's the real difference? 1600SP vs. 1600DP?

keifernet Mon Jul 21, 2003 9:40 pm

heads, intake manfold, carb, Offset oil cooling system ( 71 -on from factory, although some SP may have been converted) and maybe a few ponies( read HP) but not that much really. as far as STOCK spec anyway, now DP performance upgraded.. whole nuther bag...

type34inKY Mon Jul 21, 2003 10:11 pm

Some 1600DP came stock without the doghouse.

SP has slightly better torque on takeoff- which is why you see so many buses with SP.

DP has better high end.

This is due to the velocity and angle of the intake gasses.



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