I like the procharger VS whipple because you can stay out of max boost while cruising. I don't think I've ever heard of anyone using a whipple and not having to rebuild after a season or two... prochargers though you can get everything to last if you are gentle on things for the most part and open it up occasionally.

Ive got 4 seasons on my whippled 496 cruising at 3500 rpms it doesn't even budge the boost gauge.

With a Whipple or Roots, you would not be at max boost while cruising. I don't know where you got that info from but it is incorrect.

With a positive displacement supercharger, your boost comes in relative to throttle position. For example, cruising along at 2800RPM, you may be in vacuum. Then you nail it wot, boost shoots to pretty much its max its pulley'd for. This is why whipple and roots have been used 10x over procharger in marine applications. No lag, no need to build rpm to make boost.

in regard to drive life, the procharger will be easier on drives, because of what I posted above. With a roots or a whipple, you just cant whack it, because it will go into boost and make tons of power down low. You will have to go easy on the throttles.

there is no doubt you can make big HP numbers easily with a procharger. Simple reason is the cool charge means you can throw a lot of boost at it. Lots of boost means you can overcome the ineffieciences of the engine, and make power. With a roots ,you actually have to build a engine under the blower to make big power, because you simply cant throw a ton of boost at it due to the heat the roots makes.

IMO, Ill take a stout engine with low boost making 1000HP, over a inefficient high boost engine making 1000HP for a boat any day.

So many variables when it comes to supercharging. One guy can build a 502 that makes 1000HP. The next guy builds a 598 that makes 1000HP. The guy with the 502 says ''HA!! My 502 makes just as much as your 598 you dummy!!'' But, the difference is the 598 build is doing it with 7lbs of boost, where the 502 guy is doing it with 12lbs of boost. Which engine you think will last longer with all else equal???

This is where a screw blower like a whipple shines. All the benefits of a roots, without all the heat. As for a whipple causing a rebuild every year, that's poppycock.

That my friend is one hell of a post loaded with useful information for people like myself . Thank you .

Thanks bud. Not trying to debate what blower system is best, everyone has their own needs, wants, budgets, etc. All 3 style of compressors work well when used and setup properly. .

Just trying to clarify any confusion about a whipple being in boost all the time, requiring rebuilds every year, etc.

I also read that theblowers and whipple type had to be sent out every year or two for rebuilding.

Step away from the pipe !!!!

Just curious were you read that? because that is completely untrue

VetteLT193 Said he never heard of anyone NOT having to rebuild every year with a whipple.....I think he needs to take off the earmuffs and step out of the bubble.

It was on a old thread about 575sci motors. I was looking at a 36 with them at the time.