Originally Posted by 007joe
(Post 2758391)
I thought the 425 h.p. 496 (mag) had forged internals and 375 h.p. did not???
Also, you need to know if you have a steel crank or cast. If I remeber, they started with steel; went to cast; back to steel on some serial number range; and then went back to cast. It's a great, reliable engine but she don't like blowers for too long... In all sincerity, I do wish you luck and I'd like to hear that you came back 2 seasons later and had no issues worth mentioning after running a blower on this motor. take care, jason |
Don't forget that the ONLY difference between the mag and the mag ho consists of 3 things:
1. Size of throttle body 2. Cam 3. Computer program I still have all of these items laying on the shelf too. |
Originally Posted by HotPursuit
(Post 2758500)
He didn't ask if the engines would last. :evilb:
Don't finger fack us with details!!!!! ;) |
He was talkin to whipple about a 6# kit with a new program for the computer. They really hyped over the performance but never once mentioned longevity!
We run 20-30#s of boost in race cars but never in boats. Being that boats are always under a load, its a whole different ball game, even at 6psi.... |
I installed a whipple that pumps around 5-6 lbs of boost on my 2008 496HO . I ran the boat in several poker runs and ran the boat hard all summer averaging between 4500 - 5300 rpm most of the time and the boat performed flawlessly with over 50 hours prior to the whipple and over 125 hours with the whipple. I would highly reccomend the whipple it proved to be very reliable and the power that it cranks out is amazing. If you go on whipple's site I believe it's around 645HP not bad for a weekend bolt -on.My top end went from 72 gps on friday to 82 gps on Sunday.
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Originally Posted by live wire
(Post 2760537)
I installed a whipple that pumps around 5-6 lbs of boost on my 2008 496HO . I ran the boat in several poker runs and ran the boat hard all summer averaging between 4500 - 5300 rpm most of the time and the boat performed flawlessly with over 50 hours prior to the whipple and over 125 hours with the whipple. I would highly reccomend the whipple it proved to be very reliable and the power that it cranks out is amazing. If you go on whipple's site I believe it's around 645HP not bad for a weekend bolt -on.My top end went from 72 gps on friday to 82 gps on Sunday.
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Originally Posted by 007joe
(Post 2758391)
I thought the 425 h.p. 496 (mag) had forged internals and 375 h.p. did not???
They both have hyperutectic pistons. I'm not sure about the crank and rods. I think they have varied from year to year and not sure hwats in each particular year. |
Originally Posted by live wire
(Post 2760537)
I installed a whipple that pumps around 5-6 lbs of boost on my 2008 496HO . I ran the boat in several poker runs and ran the boat hard all summer averaging between 4500 - 5300 rpm most of the time and the boat performed flawlessly with over 50 hours prior to the whipple and over 125 hours with the whipple. I would highly reccomend the whipple it proved to be very reliable and the power that it cranks out is amazing. If you go on whipple's site I believe it's around 645HP not bad for a weekend bolt -on.My top end went from 72 gps on friday to 82 gps on Sunday.
I thought I heard that you were looking for an engine sometime recently??? :party-smiley-004: |
Originally Posted by SDFever
(Post 2760883)
Kevin, how are you?
I thought I heard that you were looking for an engine sometime recently??? :party-smiley-004: I'm actually looking to pull the motor in a couple weeks and and do a motor rebuild . I'm looking to run a little more boost and do a few upgrades cam & exhaust and maybe heads if I can swing it . I'm looking to get to around 700 hp . And maybe see 85. |
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