Offshoreonly.com - speeds for a 312 fastech

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bsebesy

02-11-2009 03:12 PM

speeds for a 312 fastech

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

t500hps

02-11-2009 03:34 PM

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

ur2slow

02-11-2009 07:47 PM

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

lotojim

02-17-2009 03:25 PM

Quote:

Originally Posted by bsebesy (Post 2798150)

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

Expect 66-68. Great boat.

Rawpower

04-21-2009 05:01 PM

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

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