Dumb question: Merc 496 Mag vs. Chevy 3500HD 496 HO truck motor????
11-06-2004, 04:25 PM
#11
Re: Dumb question: Merc 496 Mag vs. Chevy 3500HD 496 HO truck motor????
Originally Posted by TURBOED
hey kid nova is that fresh or salt water you boat in?
11-06-2004, 05:47 PM
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Re: Dumb question: Merc 496 Mag vs. Chevy 3500HD 496 HO truck motor????
Originally Posted by cooltoys61
I thought the 496 had cast pistons? Still OK if you don't abuse it but something to check.
Everyone had come up with some GREAT info on this project!!! Thanks again to everyone for the help and keep the info coming!!
04-27-2006, 09:27 PM
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Re: Dumb question: Merc 496 Mag vs. Chevy 3500HD 496 HO truck motor????
Well if this helps I own a Formula 377. It has twin 502 merc with 4 blade props and she sure can put you back in your seet. But Mercury switched from using the 502s to the 496s. They are a nice torqy motor. I also have an 03 2500 chevy with the 496 and the allison transmission and she pulls that boat AMAZING! If I were you I would put the Mercury 496 HO in that boat. It will work out perfectly.
04-28-2006, 08:30 AM
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Re: Dumb question: Merc 496 Mag vs. Chevy 3500HD 496 HO truck motor????
Stupid question,
Doesn't the automotive version have FI that requres an O2 sensor?
I didn't think the marine version uses an O2 sensor?
Gary
Doesn't the automotive version have FI that requres an O2 sensor?
I didn't think the marine version uses an O2 sensor?
Gary
06-10-2006, 11:04 AM
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Re: Dumb question: Merc 496 Mag vs. Chevy 3500HD 496 HO truck motor????
Originally Posted by rdoactive
Stupid question,
Doesn't the automotive version have FI that requres an O2 sensor?
I didn't think the marine version uses an O2 sensor?
Gary
Doesn't the automotive version have FI that requres an O2 sensor?
I didn't think the marine version uses an O2 sensor?
Gary
06-10-2006, 11:20 AM
#18
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Re: Dumb question: Merc 496 Mag vs. Chevy 3500HD 496 HO truck motor????
I have a pair of stock Merc 496 Mag PCM's that I am about to put on ebay. If you are interested, email me: [email protected]
I have no idea what they are worth.
I have no idea what they are worth.
02-19-2007, 02:48 AM
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TeamPSI:
the engines are the same except for a few minor things. First one is that you would need the marine ECM, MEFI or similar. Second the marine 496 uses a 8 qt. long deep pan, the truck pan is too deep and small for boat use. The water crossover is diffent as well as the thermostat. The injectors would have to be changed to the marine injector ( larger output). The marine duty fuel injector which is 35% bigger than the truck injector. As for crankshafts, some of the early 2001 and 2002 496's came with a forged crank that GM changed over to a newer cast unit in late 2002 that is supposedly is as strong as the forged unit. My advise, don't take any of these cranks above 575HP in a 496, our tests support this finding! If you simply wan't more power from any 496 call us or visit our website. You can bolt on our parts and with truck 496's you will have more power than stock Merc 496's. We also have a some forged cranks, crossovers,marine pans, etc. You can easily set up some nice 525HP 496's for any boat without denting your wallet.
Good Luck
Ray @ Raylar
the engines are the same except for a few minor things. First one is that you would need the marine ECM, MEFI or similar. Second the marine 496 uses a 8 qt. long deep pan, the truck pan is too deep and small for boat use. The water crossover is diffent as well as the thermostat. The injectors would have to be changed to the marine injector ( larger output). The marine duty fuel injector which is 35% bigger than the truck injector. As for crankshafts, some of the early 2001 and 2002 496's came with a forged crank that GM changed over to a newer cast unit in late 2002 that is supposedly is as strong as the forged unit. My advise, don't take any of these cranks above 575HP in a 496, our tests support this finding! If you simply wan't more power from any 496 call us or visit our website. You can bolt on our parts and with truck 496's you will have more power than stock Merc 496's. We also have a some forged cranks, crossovers,marine pans, etc. You can easily set up some nice 525HP 496's for any boat without denting your wallet.
Good Luck
Ray @ Raylar
( don't take any of these cranks above 575HP in a 496, our tests support this finding ) my boats still @ Paul Pfaffs place and you got me worried at this point, plus after my valve spring snapping in 1/2 @ 2000 R.P.M which I assume you and Paul did come to an agreement who's paying for what...Thanks
Raffy Ajion 2/19/2007
Charter Member
