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.

need help picking afr heads?

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Old 02-08-2007, 08:43 PM
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blk89lx
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Default need help picking afr heads?

ok im looking for a set of afr heads for my 91. its just going to be a street car its my daily driver so. im stuck on the cc options. there are 58cc 60cc...... just curious what would be best. o and i plan on s/c it later if that helps?
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Old 02-08-2007, 08:45 PM
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nmerrill
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Default RE: need help picking afr heads?

If you plan on supercharging it go with the 60cc's, that way your C/R wont be so high and you can run a good amount of boost
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Old 02-08-2007, 08:56 PM
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blk89lx
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Default RE: need help picking afr heads?

the description says that you may have to notch the pistions for valve clearence?
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Old 02-08-2007, 09:00 PM
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HC_CrAzYHoRsE
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Default RE: need help picking afr heads?

that's only on the 86 models if i remember correctly. do you have a link to the heads?
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Old 02-08-2007, 09:40 PM
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luckythirteen13
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Default RE: need help picking afr heads?

i run the 58cc chambered heads with boost and no problems. the 58cc heads only get you to about 9.5:1 which isnt high for boost anyways. i was running 10psi of boost. my new motor will be 10:1 with boost.
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Old 02-08-2007, 11:16 PM
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OnyxCobra
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Default RE: need help picking afr heads?

If my memory serves the 58 and 60cc heads are different rocker mount types, so it depends if you're gonna run your stock pedestal mount rockers or not. If you are then you need the 60cc chamber b/c the 58 and 61cc heads are for stud mount.
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Old 02-09-2007, 12:06 AM
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mcfomco
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Default RE: need help picking afr heads?

ORIGINAL: OnyxCobra

If my memory serves the 58 and 60cc heads are different rocker mount types, so it depends if you're gonna run your stock pedestal mount rockers or not. If you are then you need the 60cc chamber b/c the 58 and 61cc heads are for stud mount.
That is correct
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Old 02-10-2007, 05:25 AM
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gspfunk
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Default RE: need help picking afr heads?

The 58cc heads also have a better chamber design from what I've read.....
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Old 02-10-2007, 10:26 AM
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bouchermb
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Default RE: need help picking afr heads?

58CC and you better get the VP clearance checked when installing the heads. You don't want to assume anything will fit without problems and definitely don't want to learn the hard way.
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