496ho with a Whipple
#11
Charter Member #1472
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Re: 496ho with a Whipple
Brian C,i'm running stock 1.50 ratio,if you can try a merc prop 3 or 4 blade,maybe a 25 3-blade or a 26 4-blade for starter's,like i said i didn't like the way the hydro felt,dave
#12
Re: 496ho with a Whipple
Originally Posted by Brian C
I have a 2003 Sonic 260 with a 496ho & a Whipple Supercharger installed. Just wondering if anyone else has done this on there boat & what speeds that they are seeing. On GPS I am running 73mph. Does this seem right to you guys?
Just my 2 cents......
JL
#14
Charter Member #1472
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Re: 496ho with a Whipple
Brian C,did you remove the restictor plate's out of you exhaust,between the riser and the manifold,in the tech section guy's have done that and picked-up a couple of hundred rpm's.dave
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Join Date: May 2004
Location: King George, VA
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Re: 496ho with a Whipple
Yep, I sure did. It was part of what Whipple wanted done in the install. I'm thinking about going ahead & getting a set of headers for this thing. Like you say it needs to breath.
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Re: 496ho with a Whipple
I have a 2004 260 Prowler w/ a 496 HO also, but am getting only 62 to 63 out of her. It is running on the 4 blade 22 P that came with the boat, and wondering about recommendations to step up to a 26 p 4 blade. A buddy of mine recommended it, but wondering if anyone out there has any more recomendations for prop set up without engine modifications? She also only has 14 hrs on the motor at this time too so I am sure she is not quite fully broken in yet. Thanks, Pete
#19
Re: 496ho with a Whipple
Originally Posted by 26SONICBLASTER
I have a 2004 260 Prowler w/ a 496 HO also, but am getting only 62 to 63 out of her. It is running on the 4 blade 22 P that came with the boat, and wondering about recommendations to step up to a 26 p 4 blade. A buddy of mine recommended it, but wondering if anyone out there has any more recomendations for prop set up without engine modifications? She also only has 14 hrs on the motor at this time too so I am sure she is not quite fully broken in yet. Thanks, Pete
Last edited by jlsnyder26_Sonic; 06-07-2005 at 08:42 PM.