Speeds of 42 Sonics
 

Can someone provide me gps speeds for a 42 Sonic and what power/drive setup they have. Looking for ~80mph and would like to know how much power it will take.

Also, any tricks on this hull to improve speed and how much was gained with the change, i.e. weight shift, extension boxes, bottom work, etc.

Thanks,
Rick

Re: Speeds of 42 Sonics
 

RV,
I had a 2001 358 with 500efi's it ran 79mph GPS. If you have a 2002 or newer you will have the infusion layup which will save approx. 10% in weight. You will need at least 800hp per engine to get in the 80's if my figures are correct. Our new 386sts with 800hp per engine will be in the 90's but hoping to be just in the triple figure. Hope this helps.

Re: Speeds of 42 Sonics
 

RV
My 01, 386 with 575 SCi's, XR drives with Imco boxes runs 83 GPS. The 575's are rated at 550 HP. I think three HP 500's would get you close or above 80 in the 42.

Re: Speeds of 42 Sonics
 

Thanks for the response, anyone else...

Re: Speeds of 42 Sonics
 

My 2000 42 with 500 efi's bravos 24p bravo 1 props all stock, empty with just 2 guy's 1/4 tank of gas in salt water went 75.3 gps. Installed generator all the crap you need in freash water the best I got was 72.6.

Re: Speeds of 42 Sonics
 

I'm got 72.2 with 26 pitch P5Xs but we are still at 19% prop slip. Julie from Throttle Up is working with me. Can't say anything but great things about them. Waiting on Sonic to send me a drive spacer to get the props in the water better.

2005 Sonic 42SS
525 EFIs
Bravo XR ITS Drives

Re: Speeds of 42 Sonics
 

captwk how much of a spacer you going to? my firend with 358 500 efi with its had to go 2 full inches to get dialed in correctly!

Re: Speeds of 42 Sonics
 

I have a 1998 42 that had the mer 800SC #6 drives, we are now going with injected 1100's. I hope it hit in the mid 90's, it was runniing in the mid 80's

Re: Speeds of 42 Sonics
 

Rick I went through my motors 2 years ago there are 509's 585hp each. I am turning a stock 24p bravo one at 5100rpms I am at 73 gps. 1997 42 Sonic with generator.

David

Re: Speeds of 42 Sonics
 

2000 42 sonic, 750s, xrs, 80mph