871 or whipple that is the question

[THE BOSTON SIDEWINDER]

the b&m 420's are a little tired, what to go to 871's or whipples?

[SHAKEN Not Stirred]

I LOVE my Whipple !!!!!!
BTW.....Just returned from your neck of the woods.....
Spent 4 days at Sebago Lake, then 4 days on Martha's Vineyard.....
CJG
http://www2.***boat.com/image_center/data/520/1780MVC-012F.JPG

[Craig]

I think the big difference will be price. To get about 700-800 horsepower, you need a 3.3 L Whipple? Above that you need a Quad Rotor. The smaller 2.3 L Whipple starts at about 5 grand, they didn't say where the 3.3 starts. An 8-71 from the Blower Shop starts at about $3500. (prices from each companies web site)
Craig

[SHAKEN Not Stirred]

My Whippled 565 made 996HP and 940ft lbs of torque at 9 lbs of boost...
The Dart CNC heads & IMCO Powerflow Plus helped to get there....
I pullied it down to about 850 HP or so at 6 lbs of boost....
Later,
CJG
:D

[bordsmnj]

i like the whipple 3.3. nice and efficient.sounds cool, too. :) 800hp 502cu.in. 10lbs boost.

[Maxey]

Whipple Intercooled 3300's.

[TIMINATOR]

I run a 14-71 delta/front discharge and a Superchiller on the 572, and I like the way it looks and runs. I also have an 8-71 on the 548 w/ no cooler (other boat), doesn't look nearly as cool. Buy what YOU want, you will be looking at it more than any of us. TIMINATOR

[revndave]

I like roots type blowers.Getting them rebuilt is easy.Dont know about power differences between them.Just my thoughts.

[Jordy]

I suppose it all depends on if you want it now or in 6 months. Call Dustin and see what he can do for you. ;)

[plaster dave]

Teague has a ton of whipples in stock from what I heard.

[SHAKEN Not Stirred]

Teague has a ton of whipples in stock from what I heard.
I doubt it..... :idea:
The market is dry for a bit longer....... ;)
Whipple is developing their own rotors and such for their "OWN" compressor....
The first 10 or so made it to Whipple a few weeks ago.....
Hopefully they will be shipping product soon....
Later,
CJG
:D

[plaster dave]

call them if you need one.

[acatitude]

I think the whipple is great, I will just throw out something form the above posts. both the whipple posts on HP were 9lbs and 10 lbs boost. im getting 1000 hp at 7 lbs boost, 970 ft lbs. torque with my 1471 intercooled, 588CI, on pump gas. I like the idea im getting bigger numbers with less boost and strain on motor. just my 02. either way is good, the whipples are a little more in cost.

[Whipple Charged]

I think the whipple is great, I will just throw out something form the above posts. both the whipple posts on HP were 9lbs and 10 lbs boost. im getting 1000 hp at 7 lbs boost, 970 ft lbs. torque with my 1471 intercooled, 588CI, on pump gas. I like the idea im getting bigger numbers with less boost and strain on motor. just my 02. either way is good, the whipples are a little more in cost.
This is like comparing apples and oranges, well there round but...
You have head design, cam, compression, valves, manifold design, IC efficiency, carb/throttle body size, air fuel raito, spark advance, piston clearance....... that all makes HP. We've also made 1100hp @ 7lbs on some 588ci, different cam, compression, heads, etc.
There is no doubt, the screw compressor is more efficient and produces more power. Keep in mind, a 3.3 liter compressor is 200ci, vs. a 1471, it takes two 3.3's to equal the air flow capability of a 1471 yet two 3.3's have far more HP capability. We are working on a new 6.0 Liter compressor, that should end the roots as we know it, got your big size for "looks" that some look for, got the efficiency for big time power levels (over 1800 possible), etc.
Thanks,
Dustin

[Speedin' Ian]

Like most people said, I think it depends on when you want it. It definately seems like whipples are more efficient, just very hard to get and more exspensive.

[HP350SC]

This is like comparing apples and oranges, well there round but...
You have head design, cam, compression, valves, manifold design, IC efficiency, carb/throttle body size, air fuel raito, spark advance, piston clearance....... that all makes HP. We've also made 1100hp @ 7lbs on some 588ci, different cam, compression, heads, etc.
There is no doubt, the screw compressor is more efficient and produces more power. Keep in mind, a 3.3 liter compressor is 200ci, vs. a 1471, it takes two 3.3's to equal the air flow capability of a 1471 yet two 3.3's have far more HP capability. We are working on a new 6.0 Liter compressor, that should end the roots as we know it, got your big size for "looks" that some look for, got the efficiency for big time power levels (over 1800 possible), etc.
Thanks,
Dustin
Now we're talking! How about some sneak pictures of the 6.0 liter compressor?

[mike37]

This is like comparing apples and oranges, well there round but...
You have head design, cam, compression, valves, manifold design, IC efficiency, carb/throttle body size, air fuel raito, spark advance, piston clearance....... that all makes HP. We've also made 1100hp @ 7lbs on some 588ci, different cam, compression, heads, etc.
There is no doubt, the screw compressor is more efficient and produces more power. Keep in mind, a 3.3 liter compressor is 200ci, vs. a 1471, it takes two 3.3's to equal the air flow capability of a 1471 yet two 3.3's have far more HP capability. We are working on a new 6.0 Liter compressor, that should end the roots as we know it, got your big size for "looks" that some look for, got the efficiency for big time power levels (over 1800 possible), etc.
Thanks,
Dustin
so if I order a Whipple 5lb boost for my merc 496ho how long befor I get it

[hotlavey]

I think the big difference will be price. To get about 700-800 horsepower, you need a 3.3 L Whipple? Above that you need a Quad Rotor. The smaller 2.3 L Whipple starts at about 5 grand, they didn't say where the 3.3 starts. An 8-71 from the Blower Shop starts at about $3500. (prices from each companies web site)
Craig
I thought the 2.3 on a HP500EFI developed around 725 hp. Is that wrong? Dustin told me with the stock heads the power difference between the 2.3 and the 3.3 would only be around 25 hp.

[StreetScrambler]

Sidewinder,
If money isn't a concern and you don't mind an indefinite wait, the Whipple is the way to go. However, I'm assuming you already have a good set of boost-referenced marine carbs from your B&M 420s and wish to reuse them, and that the engines are up to snuff and well set up for a roots blower. If that's the case and you want instant gratification and want to keep the old school roots look, I'd check out the Weiand 8-71, or if you want to intercool, check out The Blower Shop. The Weiand stuff is priced right, and they have excellent tech support and warranty. CPPerformance.com has some good prices.
SS