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5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

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Old 03-30-2008, 11:02 AM   #1
cougarfan088
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Default which AFRs for my 94?

I am looking to get some AFR 185s for my 94 and i know some 302 heads wont work so I would like to know what AFR 185s will or of there is a difference and i would like to know what else i need to buy to get them on such as headstuds or anything else...If you guys could get me some part numbers that would be very helpful..
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Old 03-30-2008, 11:11 AM   #2
mjr46
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Default RE: which AFRs for my 94?

with a stock cam 185's will most likely clear.. but why stay stock with the cam...if you wish a custom cam can be designed to be used with 185's on a stock bottom end ..otherwise 165's may be a better option.....you'll need gaskets and if your staying emissions compliant afr heads with the smog holes at the back of the heads and exhaust cross overs
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Old 03-30-2008, 05:10 PM   #3
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Default RE: which AFRs for my 94?

im not using a stock cam...its a 331 but i was wondering if there was a difference maybe on how the heads mounted or why the variation between the years
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Old 03-30-2008, 05:40 PM   #4
r.barn
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Default RE: which AFRs for my 94?

331 needs at least 185's

If it's a stroker you should have notched pistons already.
only worry on 185's is factory flat top pistons with no notches for valve clearance.
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Old 03-30-2008, 08:00 PM   #5
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Default RE: which AFRs for my 94?

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ORIGINAL: cougarfan088

im not using a stock cam...its a 331 but i was wondering if there was a difference maybe on how the heads mounted or why the variation between the years
the variation is often a result of emissions legal vs non
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Old 03-30-2008, 08:37 PM   #6
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Default RE: which AFRs for my 94?

You technically dont need the 185s for a 331. They just help it to come alive better! Heck stock heads would work on a 331, but they would really limit it as far as power output. I would say go with the 185s if you can afford them, and get a nice big cam. If its a 331, then the pistons should be notched enough to run almost whatever you like.
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Old 03-30-2008, 08:37 PM
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