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Old 11-03-2009, 12:30 PM   #1
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1987 21 ft scarab1 perf questions 350 mag

hey guys just wondering what you 350 mag owners do for some added performance. it went strong all summer long at 54-55 on gps with a 2yr old long block and a 21p mirage plus prop. but i just tore down the motor for a long winter overhaul. block is .040 over 1987-1995 block and the heads are 1987 and up center bolts (nothing fancy). just wondering what perf mods work on a marine setup heads intake cam etc... looking to squeeze a few mph on a budget. also the boat has threw hull with stock manifolds. any suggestions woul be helpful on which route i will go.
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Old 11-07-2009, 11:07 AM   #2
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Location: Toms River, NJ
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84 Wellcraft Excalibur 27
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Originally Posted by johnlx302 View Post
hey guys just wondering what you 350 mag owners do for some added performance. it went strong all summer long at 54-55 on gps with a 2yr old long block and a 21p mirage plus prop. but i just tore down the motor for a long winter overhaul. block is .040 over 1987-1995 block and the heads are 1987 and up center bolts (nothing fancy). just wondering what perf mods work on a marine setup heads intake cam etc... looking to squeeze a few mph on a budget. also the boat has threw hull with stock manifolds. any suggestions woul be helpful on which route i will go.
Chuck out that small block junk and I have a nice 454 for you..Dont worry John we will get that boat running good for next year!
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Old 11-07-2009, 12:57 PM   #3
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yea we shall see what the winter brings!!!!!!
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