Thoughts on 496 HO and other engines in stock form?

Reply Subscribe

Thread Tools

11-20-2017, 09:01 PM

#41

Ryan00TJ

Registered

iTrader: (8)

Join Date: Nov 2006

Location: Tygart Lake, WV

Posts: 1,290

Likes: 283

Received 122 Likes on 83 Posts

Quote:

Originally Posted by Knot 4 Me

I don't believe you can get that coop gap intake anymore from Raylar. Now they just hog out the stock intakes. Better flow but they are still a heat sink.

They will still make them but $$$. Updated pricing is on their website. The intake is a very nice piece and you can really see the time and effort required to build one.

11-20-2017, 09:15 PM

#42

Keith Atlanta

Gold Member

Join Date: Jul 2008

Location: Delray Beach, FL

Posts: 3,747

Likes: 82

Received 866 Likes on 325 Posts

There were a few methods of extrude honing the stock intake. Then there were a few people porting them too, but they would cut the plenum off the bottom so they can get to the runners then weld it back on. If they could get a hundred more horsepower out of the stock intake I still dont know if I could use it - it is one ugly son of a gun.

Somebody should summon Vortech Bandit. He has modified the 496 as much or more than Raylar. Extremely creative guy and spent a lot of time but really got the 496 pumping.

11-20-2017, 11:01 PM

#43

BUP

Banned

iTrader: (9)

Join Date: Jul 2011

Location: Ft. Worth TX

Posts: 9,594

Likes: 0

Received 41 Likes on 35 Posts

Quote:

Originally Posted by Keith Atlanta

Just to add - their starting platform was not black side mercruiser it was the GM HP 3 - 8100 with 525 to 550 hp to start with inwhich was a lot better starting point than the Merc HO mag 425 hp. The HP 3 - 8100 used MEFI 4 compared to PCM 555 inwhich early years of 555 no one had a remap program offering.

Last edited by BUP; 11-21-2017 at 12:14 AM.

11-21-2017, 01:36 PM

#44

MR.HAPPY

Registered

Join Date: Apr 2013

Location: IL. & Desplaines Rivers & LOTO

Posts: 180

Likes: 3

Received 4 Likes on 4 Posts

How many safe Horses can you get out of remapping the PCM on a HO?

11-21-2017, 03:27 PM

#45

c0ncEpT

Registered

Join Date: Jul 2014

Location: Harrison Twp, MI

Posts: 171

Likes: 101

Received 55 Likes on 32 Posts

Quote:

Originally Posted by boomer

Because no engine should be run at 5000 rpm all the time unless its in a 500 mile race at Daytona.

Why would you run an engine around the Dayton 500 at half throttle?

11-21-2017, 03:59 PM

#46

Sydwayz

Forum Regulator

VIP Member

iTrader: (1)

Join Date: May 2001

Location: Worldwide

Posts: 23,828

Likes: 877

Received 1,195 Likes on 519 Posts

Quote:

Originally Posted by c0ncEpT

Why would you run an engine around the Dayton 500 at half throttle?

If I had 2X as much power as 2nd place, sure; just enough throttle to stay out front.

11-21-2017, 05:12 PM

#47

hogie roll

Registered

Join Date: Jan 2006

Location: St. Pete Beach, FL

Posts: 3,574

Likes: 1,162

Received 569 Likes on 341 Posts

Fastest 496 boats are what?

11-21-2017, 08:08 PM

#48

BUP

Banned

iTrader: (9)

Join Date: Jul 2011

Location: Ft. Worth TX

Posts: 9,594

Likes: 0

Received 41 Likes on 35 Posts

Quote:

Originally Posted by hogie roll

Fastest 496 boats are what?

Sportboat stock apps for retail sales these 2 come to mind, The Velocity 260 and 30 Y2k Superboat --- totally complete stock installs of the Mercruiser 496 HO 425 hp / Bravo drives.