Best upgrade options for 330hp 454....
#4
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I run Stainless Marine. Suppose to be one of the better manifold style exhaust on the market. Do a search on the tech forum for "330 on roids"
http://www.stainlessmarine.com/myPro...ld%20KITS.html
http://www.offshoreonly.com/forums/g...30s-roids.html
http://www.offshoreonly.com/forums/g...-steroids.html
http://www.stainlessmarine.com/myPro...ld%20KITS.html
http://www.offshoreonly.com/forums/g...30s-roids.html
http://www.offshoreonly.com/forums/g...-steroids.html
Last edited by Rookie; 04-19-2009 at 08:44 PM.
#5
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Rookie is correct regarding the exhaust however you can still make gains with your stock exhaust. let me know what type of budget you have to work with. I had a 89 challenger and did many test with and without after market exhaust. Just know that improved exhaust is needed if you plan on going much over 420 HP. Just don't expect any gains with improved exhaust and your engine stock however is a plus for future builds.
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#8
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I use the Eddie Marine with the long risers. All the info is online. I am sure others will chime in with what they use.
#9
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I used Stainless Marine with long risers on my old ' 88 Formula 454 blower motor with great results. Every one else is correct, this should be your first building block.
If it can't breathe, it can't make horse power!
If it can't breathe, it can't make horse power!
#10
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Started with '89 mark4 330's. Gil exhaust, square port heads, stock alum dual plane manifold (Merc), fluid dampner, removed water circulating pump, added crossover, bored 30 over, completly "rollerized engine", billitt cam (custom ground to my application), 9 1/4 corrected compression, 750 eldebrock marine carbs, KB pistons. Very basic "old school" engine build to Marine specs "NOT" automotive.
These were buil by a reputable shop that specializes in circle track and marine engines. Dynoed at 469 Hp and dependable as day long with good idle. 159 hrs on them without problem.
Hope this helps. You do not have to go overboard to get decent HP. Combination/components are key. Bigger is not always better.
These were buil by a reputable shop that specializes in circle track and marine engines. Dynoed at 469 Hp and dependable as day long with good idle. 159 hrs on them without problem.
Hope this helps. You do not have to go overboard to get decent HP. Combination/components are key. Bigger is not always better.