How to pump up 350 MAGS
 

I'm looking for ideas on how to gain some more HP from my 350 EFI MAGS.... any thoughts are appreciated. :ernaehrung004:

Turn them into 383's We did it and got 425hp out of them and you can get more. :drink:

Thanks bud.... how did you do that... machine shop etc.. or did ya use any supercharges, etc.
:ernaehrung004:

Use your block, Scat crank and rods, SRP pistons, Edelbrock RPM Intake and 750 CFM carb, World Sportsman II heads 2.02 intake valves 200 cc runners And A Bullet Racing HYD roller cam Part # CHS 288/296-10HR [email protected] Int 223 Exh 231 Lift Int 530 Exh 548 at a 110 centerline Comp pro mag roller rockers , going through Stainless Marine Exhaust . We put these in a 1987 272 Formula sr-1 . With the 350 mags it would run 54 on gps , after 69.9 on gps.:drink: I hope this helps.

Joby

If your boats a 2007 , leave em alone and see if they make it through the warranty , then buy an extended !!!!!

I have done both Prochargers and Whipples on those engines with great success. Either supercharger made near 500 hp. Both the customers and I were very pleased with the end result. There are a few things that need to be done if you want to run over 5 psi. To make 500, it took 7-8 psi, depending on the blower used. Let me know if you have any questions.
Eddie

Thanks guys....all good suggetions! The smartest one is to leave them alone through the warranty though!!! But that's no fun is it....:ernaehrung004:

These help

JRZ... are those on a 350 MAG? If so, what are they, and where did ya get them...thanks

Looks like they are on a scorpion 350 with http://www.custommarine.com/ headers

thats the scorpion 400

there is also a 383 350 hp reman

and 357 reman

and they take ur trades!!!

look on ebay for the sellers

357 is 4300
383 is 5000+
400 is $$$$$$$$$$

Whipple! and oil cooler.. :evilb:

CMI small block headers, available for siameesed and spread port GM. Accurate and undoctored dyno reports from Tyler Crockett and others. Available at Teague, Ateco, and Offshore Performance Call 920/720-4225

that looks like a great way to go! What was your increase with the Whipple's, stock exhaust?

It's the only way to go!! :ernaehrung004: I can't remember exactly but I think that one picked up 12-13mph, stock exhaust and under 5lbs boost. There was a thread on it in the prop section but I deleted it by mistake and don't know how to retrieve it. I've done a few others and they all work great! Boost is your friend :drink:

Haxby,
Could you tell me how much each package cost ya...w/ the oil cooler? It does look nice and clean, and wow 12-13 mph, huh...NICE!!!

:ernaehrung004:

Contact Kirk at Elite Marine for the best prices. (708)989-6017 He'll hook you up!

Whipples, coolers, new props, full service on both engines, boost gauges etc. around 18-19k installed out the door. It might seem like a lot up front but there is no bigger power for dollar upgrade you can do. The whipple kits are complete right down to hose clamps and silicone sealant. And if you do it all yourself it'll be cheaper. It's not much more difficult then swapping an intake.. :drink::drink:

Hey guys , Nick from Nuwave here. I just saw that you all were looking into some of our engines. we stock the 357, 383 and the Scorpion please feel free to call with any questions, I would be glad to help you out. 856 232 6969.

Thanks for the bump Dreamer!

NuWave
 

I bought parts from NuWave before. Good guys. Very helpful plus great prices too.