3406b 4mg - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 6 (permalink) Old 01-23-2011, 10:47 PM Thread Starter
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3406b 4mg

Hey guys just bought a 4mg b model . The serial no is 4mg69360. I was just trying to find out a little info on it.The guy told me it was a 350 turned into a 425 by adding air to air and couple more things. So from the factory did it have 15.2 pistons and what nozzles did it have.In other words is it a good motor to rebuild.Thanks
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post #2 of 6 (permalink) Old 01-24-2011, 01:57 AM
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Originally Posted by speedy94 View Post
Hey guys just bought a 4mg b model . The serial no is 4mg69360. I was just trying to find out a little info on it.The guy told me it was a 350 turned into a 425 by adding air to air and couple more things. So from the factory did it have 15.2 pistons and what nozzles did it have.In other words is it a good motor to rebuild.Thanks
That engine did come with a 15.2_1 piston.
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post #3 of 6 (permalink) Old 01-24-2011, 01:57 AM
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Quote:
Originally Posted by speedy94 View Post
Hey guys just bought a 4mg b model . The serial no is 4mg69360. I was just trying to find out a little info on it.The guy told me it was a 350 turned into a 425 by adding air to air and couple more things. So from the factory did it have 15.2 pistons and what nozzles did it have.In other words is it a good motor to rebuild.Thanks
Originally 350

15.2 Pistons

OR-3425 Nozzle

Any 4MG is a good engine....just my opinion. It came with ATAAC...not JWAC. Not sure what he means by "adding" air to air.

Tony will be by in a while, but I think it needs OR-3423 nozzles to complete the 425 upgrade....along with his mods.

2005 250 Super Duty Crew. White and Grey. ARP studs, EGR Delete, and SCT from Vivian. CCV re-route, and 4" Magnaflow turbo back.

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post #4 of 6 (permalink) Old 01-24-2011, 02:34 AM Thread Starter
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Thanks sledman i knew you would be around soon. Ok so it came factory air to air cool.I know the pump is hot as it will run with a 550 cat easy.So maybe he just reset pump and added nozzles to make it a 425.So when i rebuild it i can just use the factory serial number but just add the or 3423's and a bw199119 turbo.Oh yea this one has spacer between block and oil pan also.Thanks
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post #5 of 6 (permalink) Old 01-25-2011, 02:17 AM
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Originally Posted by SledMan View Post
Originally 350

15.2 Pistons

OR-3425 Nozzle

Any 4MG is a good engine....just my opinion. It came with ATAAC...not JWAC. Not sure what he means by "adding" air to air.

Tony will be by in a while, but I think it needs OR-3423 nozzles to complete the 425 upgrade....along with his mods.
Correct. Had to have 3423's to make it a 425. Max the rack, time it and run it!! (oh and yes all 4MG's had ATAAC)
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Originally Posted by speedy94 View Post
Thanks sledman i knew you would be around soon. Ok so it came factory air to air cool.I know the pump is hot as it will run with a 550 cat easy.So maybe he just reset pump and added nozzles to make it a 425.So when i rebuild it i can just use the factory serial number but just add the or 3423's and a bw199119 turbo.Oh yea this one has spacer between block and oil pan also.Thanks
Yep, 2861 piston kits, 3423 nozzles, 3674 head, new spacer plate, 2 pan gaskets, new adapters and off ya go
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post #6 of 6 (permalink) Old 01-27-2011, 01:28 AM Thread Starter
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I appreciate the info tony .You and sledman are the best.
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