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1987 21 ft scarab1 perf questions 350 mag

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1987 21 ft scarab1 perf questions 350 mag

Old 11-03-2009, 11:30 AM
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Default 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, 10:07 AM
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Originally Posted by johnlx302
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, 11:57 AM
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yea we shall see what the winter brings!!!!!!
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