speeds for a 312 fastech

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02-11-2009 | 03:12 PM

bsebesy

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From: Cincinnati,Ohio

speeds for a 312 fastech

What speeds are you getting out of 312 fastechs w/ stock 454 mag mpi's setups?

02-11-2009 | 03:34 PM

t500hps

21 and 42 footers

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From: Richmond VA

Mine with 502 mags ran 72-74 (78 on the speedo). Regular 454's would be low-mid 60's.

02-11-2009 | 07:47 PM

ur2slow

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From: new hartford ct

With stock efi 454's I run 68 or so. definetly good handling boat

02-17-2009 | 03:25 PM

lotojim

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From: SE IOWA and MM #1 on the Grand Glaze

Quote:

Originally Posted by bsebesy

What speeds are you getting out of 312 fastechs w/ stock 454 mag mpi's setups?

Expect 66-68. Great boat.

04-21-2009 | 05:01 PM

Rawpower

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From: McHenry, IL

I get 69-71 on my '98 312 with stock 454 mag mpi's.

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