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#1
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Hi! If I change from the Std YS 400 ex manif
to the cast iron hi-perf factory manif,any notible difference?Or do I have to uppgrade with another cam,carbjet,ignition.Another word:Is the stock exh manifold just **** in any way? |
#2
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Hi! If I change from the Std YS 400 ex manif
to the cast iron hi-perf factory manif,any notible difference?Or do I have to uppgrade with another cam,carbjet,ignition.Another word:Is the stock exh manifold just **** in any way? |
#3
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On a stock 400 you'll gain about 10 HP at the most, probably twice that much with a better cam, etc.
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1964 Tempest Coupe LS3/4L70E/3.42 1964 Le Mans Convertible 421 HO/TH350/2.56 2002 WS6 Convertible LS1/4L60E/3.23 |
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