1999 7.4 310 hp to a 2003 Vortech 496 425 hp
11-22-2003 | 08:26 PM
#3
Charter Member #232
Joined: Oct 2000
Posts: 18,417
Likes: 6
From: Carlisle, MA USA
I do not think that you will need to do much except to deal with the new exhaust that you will likely want. I am of course assuming that both of your motors are full dressed motors. To know how much faster we would need to know what your boat is and what not. Give us more info and I am sure we can help ya out.
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11-23-2003 | 07:26 AM
#4
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Joined: May 2001
Posts: 113
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From: Candlewood Lake, CT
I went from a '98 7.4MPI 310hp to a 502MPI 415hp MAG motor and picked up about 9 to 10mph and tons of midrange power.
That was on a '98 Formula 252LS with a non stepped 22 degree V bottom, heavy boat.
I think the 496MAG's exhaust manifolds are spaced a bit wider appart than the 454/502 motors.
Go for it, good luck.
Jamal
That was on a '98 Formula 252LS with a non stepped 22 degree V bottom, heavy boat.
I think the 496MAG's exhaust manifolds are spaced a bit wider appart than the 454/502 motors.
Go for it, good luck.
Jamal
11-23-2003 | 03:24 PM
#5
Thread Starter
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Joined: Oct 2003
Posts: 32
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The 496 is not dressed. I will need to add:
1.Injectors, and Module
2.Spark Plugs
3.Computer
4.Throttle Body
5.Fuel Injection Harness
6.Engine Harness
7.Exhaust
Any idea's on where I can find these "pre-owned" ?
1.Injectors, and Module
2.Spark Plugs
3.Computer
4.Throttle Body
5.Fuel Injection Harness
6.Engine Harness
7.Exhaust
Any idea's on where I can find these "pre-owned" ?
11-23-2003 | 03:33 PM
#6
Member #2 ....Jeeezz
Joined: Oct 2000
Posts: 2,345
Likes: 0
From: Kicked to the curb
Originally posted by thegreygoose
The 496 is not dressed. I will need to add:
1.Injectors, and Module
2.Spark Plugs
3.Computer
4.Throttle Body
5.Fuel Injection Harness
6.Engine Harness
7.Exhaust
Any idea's on where I can find these "pre-owned" ?
The 496 is not dressed. I will need to add:
1.Injectors, and Module
2.Spark Plugs
3.Computer
4.Throttle Body
5.Fuel Injection Harness
6.Engine Harness
7.Exhaust
Any idea's on where I can find these "pre-owned" ?
1.Injectors, and Module
2.Spark Plugs
3.Computer
4.Throttle Body
5.Fuel Injection Harness
6.Engine Harness
7.Exhaust
Wouldn't that just be a 496 with xxxHP ... well, I guess it prolly has Vortech heads.
Last edited by cigarette1; 11-23-2003 at 03:36 PM.
11-30-2003 | 09:38 PM
#7
Guest
Posts: n/a
Heh, just put a carb on it....it'll still blow that 310 away!
I believe arizona speed&marine carries some of those
parts. www.azspeed.com
friend with 99 checkmate zt240 454 310....gps 62mph
friend with 2002 zt240 496 375 hp 71 mph gps
I believe arizona speed&marine carries some of those
parts. www.azspeed.com
friend with 99 checkmate zt240 454 310....gps 62mph
friend with 2002 zt240 496 375 hp 71 mph gps
Last edited by AthORiTAH; 12-01-2003 at 12:06 AM.
