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Old 03-19-2020, 01:35 PM   #1
62nalide


 
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(4) Frankenstein Monster LS3 Heads

Finally have more of these in stock, currently have 4 sets of Frankenstein M311 Monster LS3 heads on the shelf !!!!

(3) with .660" Dual Manley Springs $2,560.00 Shipped

(1) With PAC 1207X .700" Dual Springs (Good for power adders)
$2,725.00 Shipped





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Old 03-19-2020, 03:18 PM   #2
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Down to 2 sets of .660" Springs and 1 with PAC 1207X Springs.
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Old 03-19-2020, 08:41 PM   #3
John_C
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What kind of estimated power increase are we talking on a setup like mine if I switched to those heads?

Car is on about 14psi with a D1X and 3.9" pulley making 760 rwhp.
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Old 03-20-2020, 08:10 AM   #4
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Quote:
Originally Posted by John_C View Post
What kind of estimated power increase are we talking on a setup like mine if I switched to those heads?

Car is on about 14psi with a D1X and 3.9" pulley making 760 rwhp.
These result in 1-1.5lbs boost drop and gains if around 35-50whp on that setup.
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Old 03-20-2020, 09:52 AM   #5
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So the only ring exhaust ports do you still use a metal gasket?? An what’s the purpose over a standard gasket??
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Old 03-20-2020, 02:11 PM   #6
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1 Set left with .660" Dual Springs
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Old 03-20-2020, 02:45 PM   #7
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Quote:
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So the only ring exhaust ports do you still use a metal gasket?? An what’s the purpose over a standard gasket??
The O-Rings eliminate the use of gaskets. The main purpose to avoid using standard gaskets.
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Old 03-26-2020, 09:40 AM   #8
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Down to 1 Set with .660" Dual Springs
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Old 03-27-2020, 08:15 AM   #9
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SOLD
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