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Old 07-03-2014, 07:52 AM   #1
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4.6 Turbo build

1996 4.6 4v
Block bore 3.700
Forged scat crank 3.750
Diamond 11cc pistons, 9.5:1
Carrillo rods
B heads stage 3 port&polish
Custom MMR manifold...
Aspirations of 650+ rwhp. I've assembled the above parts but don't know what kinda cams to go with and how big of a turbo. I was thinking a 76mm..or should I go bigger??

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Old 07-03-2014, 07:58 AM   #2
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On a built motor I would go in the 80s for the turbo..... And that's a pretty good bore size.

Bullitts are better than Bullets


Faster than a speeding...............
2001 Bullitt being prepped for track duty
Corners > Straight line

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Old 07-03-2014, 12:41 PM   #3
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Looks good except I would go with C heads over the Bs. Yeah the B heads can make good power but the C head will do better throughout. If you are dead set on staying with the B heads I wouldn't port them, they don't need it. Valve job, IMRC delete and run them as is. You can also make 650whp with stage 2 ported PI heads if you were ever thinking of staying 2V. TFS head obviously will too.

A 76mm should get you to your power goal and stock 96-98 Cobra cams will get you to 650 no problem.

Before you start have you ever thought of a Coyote swap over a modular 4V build? Price them both out and I'm willing to bet it would be cheaper to do the Coyote.
2000 Mustang GT Steeda build #48. Bolt ons, suspension, Novi 2000.

Just because I give you advice, doesn't mean I know more than you. Its just means I've done more stupid ****.
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Old 07-04-2014, 02:23 AM   #4
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I already have 65% of what I need for this 4v build, but I did price it out and through the hook ups I had this was far cheaper. I'm going with the B heads but I'm going to get a 4-5 angle valve job on them and that's about it I guess. I should've put into account that it's already made for forced induction haha
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