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5.0 Mustangs Tech Forum

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Unread 08-23-2013   #1 (permalink)
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Default b303 or f303 cam

hi everyone im currently thinking on getting a cam on my 91 gt but im undecided if i should go with the b303 of the f303 i dont drive the car much so its not my daily driver, current mods are cold air intake,under drive pullies, bbk shorty headers, offroad h pipes with slp loud mouths 1, so the rest is in stock trim im planing on running with the stock heads for now i will only be porting them for now, will the f303 be good on my stock block?
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Unread 08-23-2013   #2 (permalink)
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Don't bother. Heads first, then cam. A cam alone won't do nothin' but give you a choppy idle.
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Unread 08-23-2013   #3 (permalink)
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If your going to all the trouble of putting a cam in it,get a good set of heads on it at the same time is a must.They all work
together.Steve (I like my B303 but everybody has an opinion on this)
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Unread 08-23-2013   #4 (permalink)
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I also agree as swapping cams is a costly endeavor and timely. The cam will not really do much for you plus the stock valve springs will not enjoy the extra lift.

Stock heads are very big restrictions as well as the stock intake manifold which is even bigger. These stock 5.0 are like little diesels and make power down low and run outta steam at 4.5k rpm.
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Unread 08-23-2013   #5 (permalink)
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get a rear end first
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Unread 08-23-2013   #6 (permalink)
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thanks for the heads up so do you guys recommend AFR or trickflow heads as im planning on adding some nitrous down the road


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Unread 08-23-2013   #7 (permalink)
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i already rebuild my rear end and have 3.73s


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