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Originally Posted by ezstriper
(Post 2655791)
If you have head issues anyway, 1st upgrade to vortec heads, these things are worth 40 hp at lower rpm over what you have now, assuming you have std s/b heads, you have to get matching intake, rockers to make it work, sconnins $ dickey have the complete kit with everything needed, just did one...the prochargers will do wonders and if you keep the boost between 4-5 lbs and the timing at 28 max and no lean condition should work very well and be reliable, have a friend with twin small blocks in a nova III w/ prochargers 4 lbs, runs 85 on radar, and that is not a great hull, Rob
Cool, that is very helpful.... |
NO Big Blocks
Originally Posted by daredevil
(Post 2655861)
Just put some 502's in it and sell the small blocks.
Reg. 502 ,415-425 HP reliable . Maybe 100 pounds more but alot more tourqe easy fit ,...............done.:eek: I'm not even considering bb's; too many reasons to list. But #1 is the hull is perfecty balanced w/sb's or a single bb; maintenance w/bb's would be a nightmare....then there's the weight!! And the fuel consumption!!!! I get 3+mpg @3800...also my Bravo drives will last FOREVER, if cared for....you get the picture.... The Raylar 550SB would be great if I had an extra 75k layin' around! |
Originally Posted by ezstriper
(Post 2655791)
If you have head issues anyway, 1st upgrade to vortec heads, these things are worth 40 hp at lower rpm over what you have now, assuming you have std s/b heads, you have to get matching intake, rockers to make it work, sconnins $ dickey have the complete kit with everything needed, just did one...the prochargers will do wonders and if you keep the boost between 4-5 lbs and the timing at 28 max and no lean condition should work very well and be reliable, have a friend with twin small blocks in a nova III w/ prochargers 4 lbs, runs 85 on radar, and that is not a great hull, Rob
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Here's a kit from Jeg's. It an Eagle cast rotating assembly for 1-piece seal blocks. With Vortec heads and a good roller cam, you should not have a problem pusing 450 HP.
I'm using almost the same kit in my 383 but I have the Competition set up that's all forged with 6.0" H-beam rods. It was about double the price of the cast kit. http://www.jegs.com/i/Eagle/356/B13005L/10002/-1 |
This is what I used in mine...
http://www.jegs.com/i/Eagle/356/12010/10002/-1 Don't let the compression ratios throw you. If you're using Vortec-style heads then you can get away with almost 10:1 with premium. |
Originally Posted by spilman
(Post 2655141)
I would like to get as much power out of my 1999 350magMPI's as possible w/o losing reliability....
With that being said, how about looking at the Merc 6.2 motors to see how they're set up. What about that Scorpion 377? There's no need to re-invent the wheel, just build it better and for less money. |
Fix your valve train issue and bolt on a pair of Whipples. The initial cost is quite a bit more then the prochargers but it is worth every penny in the long run. The procharger is an excellent unit, but their "kit" leaves a lot to be desired. If you have a mechanic who is well versed in prochargers then I wouldn't hesitate, but by the time you modify everything to make them run as well as the whipples do out of the box you'll be very close to the same cost.. :drink:
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Two Raylar LSM 550's don't cost $75K they are about $51K for twins and for what they are thats a very good price point. One of OSO's good marine engine builders can rework your 350's for an easy 450HP each with the right parts and builds. They would have to replace your stock fuel injection with something like the small block ramjet system and couple that with some good smallblock heads and a blueprint equipped forged short block and headers and a 450HP screamin smallblock would be yours. Buying a Jegs type crate motor and putting it in marine high performance use is like playing "Russian Roulette" with three bullets in the gun!! Don't buy your motors twice !!
Best Regards, Ray @ Raylar |
Mercury reman makes 400hp SBC engines. Mbam on this board sells them. http://www.offshoreonly.com/forums/s...d.php?t=187351
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Originally Posted by Raylar
(Post 2657290)
Two Raylar LSM 550's don't cost $75K they are about $51K for twins and for what they are thats a very good price point. One of OSO's good marine engine builders can rework your 350's for an easy 450HP each with the right parts and builds. They would have to replace your stock fuel injection with something like the small block ramjet system and couple that with some good smallblock heads and a blueprint equipped forged short block and headers and a 450HP screamin smallblock would be yours. Buying a Jegs type crate motor and putting it in marine high performance use is like playing "Russian Roulette" with three bullets in the gun!! Don't buy your motors twice !!
Best Regards, Ray @ Raylar |
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