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Old 03-25-2014, 11:38 PM   #201
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Originally Posted by Carcrazygts2 View Post
Find a 05-06 Gt500 Lower. It bolts up the the Navi heads as far as I know.
Make sure my numbers are right on this @Carcrazygts2

I still dont know if im going 2v or 4v. But I need to order pistons and rods to get the bottom end done.

Considering the PI heads have 42cc chambers and the 4v has 52cc has made me deliberate on the pistons. The block was bored .020 over, so bore size is 3.572
stock stroke.

Going with 18cc dished and the 2v with give me 8.94 (static)
Going with 18cc dished and the 4v will give me 8.11 (static).

I think both of those would work either way I went.
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Old 03-26-2014, 12:16 AM   #202
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Your numbers are slightly off. It really depends on where the pistons installed height falls. I build my engines for 0 deck, which typically gives the better quinch areas. At 0 deck the 4v will be closer to 9.2:1 and the 2v will be closer to 10:1. It really will fall down on deck height. Did you measure the factory deck height?
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Old 03-26-2014, 12:35 AM   #203
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Your numbers are slightly off. It really depends on where the pistons installed height falls. I build my engines for 0 deck, which typically gives the better quinch areas. At 0 deck the 4v will be closer to 9.2:1 and the 2v will be closer to 10:1. It really will fall down on deck height. Did you measure the factory deck height?
.120''
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Old 03-26-2014, 12:42 AM   #204
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- a few thousands depending on how much they are decking the block. Ill know more on it tomrorrow
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Old 03-26-2014, 07:58 AM   #205
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@ around .110 on deck height you'll be 8.2 with the 4v, and 9.0 with a 2v. I would co with a 4v setup. More boost, more power, more torque, and better reliabilty.
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Old 03-28-2014, 03:50 PM   #206
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Got two used 4.6 PI heads for 250 bucks today. Off to the machine shop for clean up and valve work.
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Old 03-28-2014, 04:23 PM   #207
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Got two used 4.6 PI heads for 250 bucks today. Off to the machine shop for clean up and valve work.
So much for the 4v...
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Old 03-28-2014, 06:06 PM   #208
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So much for the 4v...
haha no one said it wasn't a side project.
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Old 03-28-2014, 06:14 PM   #209
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Quit hiding stuff and tell us what youre doing lol
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Old 03-28-2014, 06:34 PM   #210
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Haha the 4V heads are for a secret project! It kind of involves an 06 BMW
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