353 Fastech How fast ??

Smitty · 09-02-2003, 01:32 PM

I have decided that a 353 Fastech will be the next boat. How fast do they run with the following engines:

HP 500's ??

502 EFI Magnums ??

454 EFI Magnums ??

Also are there any bad issues with 1998 to 2000 models

Thanks

Smitty · 09-04-2003, 11:18 AM

Thanks Troutly--

I am going to find one with the HP500's, hopefully injected too. Then I plan to Whipplecharge them. My wife wants the nice cabin and stuff and I need to go fast. My current boat goes 75 so the HP 500's will suffice for a while

Dave

ceich35 · 09-10-2003, 05:04 PM

Have in our shop right now a 2003 353 with 525 EFI and had on a bay test on gps at 86, has the lighting grafics, the actual hot boat magazine article boat, have also had a 353 with 500 EFIs up to 84 on gps too,

ceich35 · 09-11-2003, 08:45 AM

SHHHH, don't be so loud ........................................................................... .. southern end of the lake, during the LG fun race by the steam ships 86 mph and mattituck LI 84 mph, SHHHH

John B · 09-12-2003, 11:47 AM

Ciech, Were these boats ITS, Stellings, or stock? I would think the 525 would be 4 mph faster if they didn't have extensions and raised drives.

THE GOOD STUFF · 09-12-2003, 01:35 PM

03 353 with stellings boxes & 525 EFI 87.8 gps with merc lab 33 .also ordered from magicfloat

ceich35 · 09-13-2003, 09:33 AM

John B When I ran the 353 with 500 EFIs I was in salt water in long island, the 353 with 525 EFIs I ran in Fresh water, the densitiy of the waters has effected other stock fastechs we have and have had to work with formula to prop the boats for Lake George.

John B · 09-13-2003, 03:38 PM

Ceich, What do you think the speed difference is between fresh and salt water on a Fastech? I am doing prop testing on a 382 in fresh but it's going to be used in salt.
Thanks, John

augie58 · 09-13-2003, 09:36 PM

my 1998 353 runs 77 -78 normally best ever was 79 point that 28 labed props no boxes. hp 500's. i have heard that in 2000 formula raised the x dimension 1 inch. if anybody can confirm this i would appreciate the info as i might look into shortened drives. i was in the the st crouix poker run and a guy with a 2000 with 502 mag's damn near ran with me.

augie58@yahoo.com

ceich35 · 09-15-2003, 09:34 AM

Formulafastech
We have not had to change anything for the elevation, but we noticed drastic prop changes esecially on the 271's, stock from the factory we had a unit with a 4b lab 24 pitch prop, and we could not even get to 3/4 throttle before the rev alarm went off, so we had a 292 in stock with lab 28 pitch, tested them and got the max rpm to 5000 rpm, talked with formula and stumped them with our performance, the twin engine boats seem to be ok but still lower on speed and higher on rpm, but it's lake george we can't go fast ANYWAY, lg patrol pointing finger to slow down