Are aftermarket heads better than ported? - Mustang Evolution

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Old 07-10-2013, 06:39 PM   #1
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Are aftermarket heads better than ported?

is there much performance gain with aftermarket heads compared to stock ported? I am planning on supercharging it, what are good heads for it? I heard if you get to high of compression heads with a supercharger they will blow off, is that true?
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Old 07-10-2013, 06:41 PM   #2
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Oh yeah wayyyyyyyyyyyyyyyyy better

---------- Post added at 07:41 PM ---------- Previous post was at 07:41 PM ----------

And you want 8:5:1 compression for a good forced inducted motor
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Old 07-10-2013, 09:35 PM   #3
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Quote:
Originally Posted by Anthonyb3 View Post
is there much performance gain with aftermarket heads compared to stock ported? I am planning on supercharging it, what are good heads for it? I heard if you get to high of compression heads with a supercharger they will blow off, is that true?
From that sentence alone it sounds like you need to do a LOT of research on exactly what you are doing, cost, other mods to your car etc... Just throwing a S trim on a modular that you install yourself is a $3k venture AT MINIMUM. Also, the bone stock PI heads will support way more power than the bottom end of the motor can take so if all you are doing is supercharging it don't even touch the heads. If you need TFS heads for a boosted application you are looking to spend in the $10-$20k range for your drivetrain.

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Oh yeah wayyyyyyyyyyyyyyyyy better

---------- Post added at 07:41 PM ---------- Previous post was at 07:41 PM ----------

And you want 8:5:1 compression for a good forced inducted motor
For a roots/pd/twin screw blower yeah, that is what the Terminator uses. For a centrifugal or a turbo... no you want a higher compression so it isn't a complete dog while out of boost.
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Old 07-10-2013, 09:52 PM   #4
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I already have manley connecting rods, manley 11cc pistons, stoker crank, high flow oil pump, and a bigger oil pan. im looking to get a kenne bell 2.6 or 2.8 supercharger after collage. I want a set of heads now an im curious as to what head would work best for my situation.
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Old 07-10-2013, 09:55 PM   #5
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So you have a built motor running right now with the stock heads on it running in the car or a shorblock on a stand or are those just the parts you have still in boxes?
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Old 07-10-2013, 10:01 PM   #6
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parts are in boxes waiting to be installed
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Old 07-11-2013, 12:07 AM   #7
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If you're not running a high about of boost you'll be fine with a good port and polish
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Old 07-11-2013, 12:41 AM   #8
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I was thinking about 14 lbs of boost
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Old 07-11-2013, 06:58 AM   #9
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Why 14? A well built and tuned motor can take well over 20 and not even break a sweat. The rest of the car must be upgraded to take bigger power too... suspension, built trans, wheels/tires, cage etc...
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Old 07-11-2013, 07:06 AM   #10
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Be careful if your useing the stock rotating assembly and block because it can only handle about 450 to 500 hp. Also the stock connecting rods can only handle so much psi
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Old 07-11-2013, 08:27 AM   #11
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You need to talk to shrader performance they are currently building a bad a@# 2v supercharged engine that is putting out 700hp on e-85 fuel and they will be hooking up a methanol inj. on it soon. It has trickflow heads and ysi vortech 15lbs boost.

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Old 07-11-2013, 08:55 AM   #12
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Be careful if your useing the stock rotating assembly and block because it can only handle about 450 to 500 hp. Also the stock connecting rods can only handle so much psi
He said he has aftermarket internals waiting to go in. As for the block... the modular cast iron block is pretty much bulletproof.
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Old 07-11-2013, 10:02 AM   #13
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Originally Posted by scottydsntknow View Post

He said he has aftermarket internals waiting to go in. As for the block... the modular cast iron block is pretty much bulletproof.
Oh lol I thought it was a 5.0 pushrod. My bad
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