454 cid 330hp -- want more HP
11-22-2002, 05:24 AM
#41
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The main differences would be head gaskets, freeze plugs and if its for automotive, the cam profile. This is assuming you are only talking about a long block, not all the accessrories.
BT
BT
11-22-2002, 08:06 PM
#42
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I had a customers boat that had a 454 making approximately 500 HP. I ran the boat on GPS, then installed a set of Stainless Marine manifolds and retested within a few hours at the same place, same conditions. It had a noticable increase in midrange and gained 2 MPH top end on GPS.
