Kenny Bell Bolt on - Page 2 - Ford Mustang Forum
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Quote:
Originally Posted by AlloyPony View Post
If you really want to go fast, combine that with a better intake manifold and some head work. The problem with the 2V is it can't breathe. When I went to a 4V motor I couldn't believe the difference made by just letting the engine suck more air.

My buddy's ProCharged 2V car with gears has to work really hard to pull away from my 98% stock 4V Mach 1. It's a night and day difference between engines.

Open that 2V up so it can BREATHE.

Then, throw a blower on if you dare. [IMG class=inlineimg]/forums/images/AllFordMustangs-vbtoucan/smilies/tango_face_grin.png[/IMG]
I’m no modular expert but it seems like head work on these motors is a lot of money for not so much gain. But you’re right better flowing heads and forced induction is a win win if the funds allow. But dollar for hp the blower will generally win. Same story with the pushrod v8’s. They came with the worlds crappiest heads. One could do a $3k trick fkow top end and make around 280-290 rear horse. Or they could add a conservative amount of boost to the crappy top end and make 300 or more. Remember, the 302 5.0 mustangs were only starting with around 200 rear horse.
Side bar- Are the 2v and 4v apples and oranges? Do the 4v heads flow that much more by design or is it the ability to rev higher that makes the bulk of the power?
I found a dyno graph for a stock mach 1. Not bad numbers. Would be a good candidate for a centri blower since it can rev so high. The higher the rpm the more the psi.
[url]https://www.google.com/amp/s/forums.corral.net/forums/svt-dohc/260051-free-dyno-stock-mach-1-knoxville-tn.html%3Ft%3D260051%26amp%3D1[/url
Bronco, KB the sht outta it! It’ll hustle.

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4V heads outflow 2V heads considerably. I still don't see the point of ported heads or trickflows with boost until you have a forged rotating assembly and can use that extra flow. Stock 2V heads and intake will handle anything that the stock bottom end can handle.


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You can open things up all you like but ultimately displacement is a severely limiting factor. Forcing air into it overcomes displacement and less than awesome cylinder head flow and combustion chamber design. Internal combustion engines are nothing more than air pumps.... These ones just happen to be limited on how much air they can draw in on their own.


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Quote:
Originally Posted by AlloyPony View Post
If you really want to go fast, combine that with a better intake manifold and some head work. The problem with the 2V is it can't breathe. When I went to a 4V motor I couldn't believe the difference made by just letting the engine suck more air.

My buddy's ProCharged 2V car with gears has to work really hard to pull away from my 98% stock 4V Mach 1. It's a night and day difference between engines.

Open that 2V up so it can BREATHE.

Then, throw a blower on if you dare. [IMG class=inlineimg]/forums/images/AllFordMustangs-vbtoucan/smilies/tango_face_grin.png[/IMG]
Quote:
Originally Posted by SoCal2V View Post
You can open things up all you like but ultimately displacement is a severely limiting factor. Forcing air into it overcomes displacement and less than awesome cylinder head flow and combustion chamber design. Internal combustion engines are nothing more than air pumps.... These ones just happen to be limited on how much air they can draw in on their own.
2v head flow numbers towards the bottom of the page.
http://www.mustangandfords.com/how-t...mmff-mixmatch/
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