496 HO Procharger
07-01-2021 | 05:50 PM
#12
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From: SW Ohio
SB,
The OP was asking if anybody would be interested in scooping up a potentially soon-to-be removed ProCharger. I’m pretty new here, but I think making sure the seller makes an informed decision as to whether to actually sell it is very relevant.
Thanks. Brad.
Model Machine and Precision LLC
(937)545-8991
The OP was asking if anybody would be interested in scooping up a potentially soon-to-be removed ProCharger. I’m pretty new here, but I think making sure the seller makes an informed decision as to whether to actually sell it is very relevant.
Thanks. Brad.
Model Machine and Precision LLC
(937)545-8991
07-01-2021 | 06:45 PM
#13
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From: San dimas
StarKustom,
I'm assuming we're talking about the ProCharger M1 5psi package...? It's a pretty mild build, really.
You shouldn't have any troubles out of the 496HO. The base 496 might be problematic, but not the HO. The base 496 has cast rotating assembly parts, but the 496HO has all forged. It's a brute of an engine. You won't hurt it running WOT any more than any other engine. There's a guy on Cumberland that has a Rinker 262ss with a 496HO/ProCharger that runs all over the lake at WOT. I don't know what he runs, but I know our 454 powered Rinker 236sc wouldn't keep up with him, and by a good bit. I also know our "new" PowerQuest 280, with your same package, will run 50MPH all day long, well short of WOT at about 3500RPM, and right at the zero manifold pressure stage.
The only real drawback to this package is the effective parasitic loss of it's low end torque, being that more prop is needed to render the higher RPM HP gains. What was done when the previous owner had the ECU recalibrated? If they sent it to Whipple, hopefully they did the Stage 2 recal, and you've gotten some of that loss back.
Back to the drive..... Do you have a stock B1? Or an X or XR? I was told by a couple people that you can actually extend the life of an overdriven B1 drive by increasing the pitch and reducing blade count of the prop. This will allow it to slip a bit more coming out of the hole, reducing the effective load on the drive's internals. Don't shoot the messenger.
Thanks. Brad.
Model Machine and Precision LLC
(937)545-8991
I'm assuming we're talking about the ProCharger M1 5psi package...? It's a pretty mild build, really.
You shouldn't have any troubles out of the 496HO. The base 496 might be problematic, but not the HO. The base 496 has cast rotating assembly parts, but the 496HO has all forged. It's a brute of an engine. You won't hurt it running WOT any more than any other engine. There's a guy on Cumberland that has a Rinker 262ss with a 496HO/ProCharger that runs all over the lake at WOT. I don't know what he runs, but I know our 454 powered Rinker 236sc wouldn't keep up with him, and by a good bit. I also know our "new" PowerQuest 280, with your same package, will run 50MPH all day long, well short of WOT at about 3500RPM, and right at the zero manifold pressure stage.
The only real drawback to this package is the effective parasitic loss of it's low end torque, being that more prop is needed to render the higher RPM HP gains. What was done when the previous owner had the ECU recalibrated? If they sent it to Whipple, hopefully they did the Stage 2 recal, and you've gotten some of that loss back.
Back to the drive..... Do you have a stock B1? Or an X or XR? I was told by a couple people that you can actually extend the life of an overdriven B1 drive by increasing the pitch and reducing blade count of the prop. This will allow it to slip a bit more coming out of the hole, reducing the effective load on the drive's internals. Don't shoot the messenger.
Thanks. Brad.
Model Machine and Precision LLC
(937)545-8991
yes, that’s the package. Pro Charger did the tune. Drive is a B-1, and instead of less blade he went up with blades and pitch. I’ve some
calcuting on what it’s gonna take to revert it back to stick with a whipple Tune and new prop. Figured I’d gauge some interest in the procharger to help with the costs
07-01-2021 | 10:23 PM
#14
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From: Delray Beach, FL
LOL, All forged huh? Thats not accurate. You may want to check serial numbers. Before 2002 theres a "possibility" that the crank was forged, but the pistons are always hypereutectic cast pistons. Otherwise, its a cast crank, and while its not your dads cast crank, its still cast. This is a picture I took to remind myself of how strong 496 Mag HO pistons are. Thats a piston in my hand. 
The pistons are the weak point. Ive learned this lesson twice....
The pistons are the weak point. Ive learned this lesson twice....
07-02-2021 | 07:54 AM
#17
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From: SW Ohio
LOL, All forged huh? Thats not accurate. You may want to check serial numbers. Before 2002 theres a "possibility" that the crank was forged, but the pistons are always hypereutectic cast pistons. Otherwise, its a cast crank, and while its not your dads cast crank, its still cast. This is a picture I took to remind myself of how strong 496 Mag HO pistons are. Thats a piston in my hand. The pistons are the weak point. Ive learned this lesson twice....
The pistons are the weak point. Ive learned this lesson twice.... What were you doing to that poor engine?
Thanks. Brad.
Model Machine and Precision LLC
(937)545-8991
07-02-2021 | 01:14 PM
#18
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From: Wisconsin
Back when the 496s were more popular you couldn’t read two sentences about one before those sh!tty pistons were mentioned. Keith is correct, early HOs were built better but still not consistent, later MYs were not forged.
But to OP I think with that low of boost and correct tune you’d be ok leaving the charger on.
But to OP I think with that low of boost and correct tune you’d be ok leaving the charger on.
10-26-2021 | 11:16 PM
#19
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StarKustom,
I would agree with both of these replies. If you've got a Bravo1 drive, you'll scatter that before your engine even sees a problem. The 496HO/ProCharger is a fairly proven package, even if it doesn't yield quite the output a true supercharger would.
Thanks. Brad.
Model Machine and Precision LLC
(937)545-8991
I would agree with both of these replies. If you've got a Bravo1 drive, you'll scatter that before your engine even sees a problem. The 496HO/ProCharger is a fairly proven package, even if it doesn't yield quite the output a true supercharger would.
Thanks. Brad.
Model Machine and Precision LLC
(937)545-8991
it’s also significantly less abusing on a drive as it doesn’t make as much low end power as roots/screw, that’s the only draw back in general however in a boat it’s perfect for drive life.
