Question on used AFR 185 head purchase - Ford Muscle Forums : Ford Muscle Cars Tech Forum
 
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post #1 of 5 (permalink) Old 01-20-2014, 04:59 PM Thread Starter
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Question on used AFR 185 head purchase

I'm in the slow process of building a 347 hydraulic roller engine for the street. It'll likely be EFI, and for sure be naturally aspirated. I've done a couple rebuilds on engines but never a build, so I'm new at this performance stuff.

I'm looking at a Craigslist ad for AFR 185 heads. The seller, who claims they were on his 850hp 331 race engine for seven years, says they have 5,000km on them, 58cc chambers, a 5-angle valve job (angles not specified), and Comp 400lb dual springs for hydraulic roller lifters. He says he upgraded the rocker studs to a longer ARP stud (not sure how long) for Magnum rockers. The heads are not decked.

He wants $1,200. I would assume that it's negotiable. This doesn't include rockers.

He later states that for an extra $300, he'll throw in Comp 400lb and 600lb dual springs (the 400lb set being an extra and the 600lb set being for solid roller lifters - or so he says), and Magnum 1.6:1 roller rockers.

Is this a good deal? Should I get the priced budged down? Is it even worth buying used? I want a hydraulic roller cam, so the 600lb set of springs would be useless to me, right? I for sure want the heads and the rockers. Is a 400lb spring pressure what I want though?

Anything else I should know?

Thanks to anyone that helps!
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post #2 of 5 (permalink) Old 01-23-2014, 04:35 AM
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Re: Question on used AFR 185 head purchase

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Originally Posted by carbureted View Post
I'm in the slow process of building a 347 hydraulic roller engine for the street. It'll likely be EFI, and for sure be naturally aspirated. I've done a couple rebuilds on engines but never a build, so I'm new at this performance stuff.

I'm looking at a Craigslist ad for AFR 185 heads. The seller, who claims they were on his 850hp 331 race engine for seven years, says they have 5,000km on them, 58cc chambers, a 5-angle valve job (angles not specified), and Comp 400lb dual springs for hydraulic roller lifters. He says he upgraded the rocker studs to a longer ARP stud (not sure how long) for Magnum rockers. The heads are not decked.

He wants $1,200. I would assume that it's negotiable. This doesn't include rockers.

He later states that for an extra $300, he'll throw in Comp 400lb and 600lb dual springs (the 400lb set being an extra and the 600lb set being for solid roller lifters - or so he says), and Magnum 1.6:1 roller rockers.

Is this a good deal? Should I get the priced budged down? Is it even worth buying used? I want a hydraulic roller cam, so the 600lb set of springs would be useless to me, right? I for sure want the heads and the rockers. Is a 400lb spring pressure what I want though?

Anything else I should know?

Thanks to anyone that helps!
I would pass on that deal. the New AFR 185 heads flow even better for a little more money. If you do buy New heads make sure they come with the proper valve springs for your cam. Ed Curtis at FTI may be worth looking into AFR 185 Outlaw Cylinder Heads - 58cc - FlowTech Induction I am not a big fan of used heads as it can be risky. You will need to tear them down and check everything. If you end up needing any work you could be at the cost of new heads real quick.

Last edited by cmefly; 01-23-2014 at 04:38 AM.
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post #3 of 5 (permalink) Old 01-28-2014, 05:22 PM
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Re: Question on used AFR 185 head purchase

I bought a used set of TFS 170's a few years ago on Fleabay. The intake valves all needed to be replaced, so had to have the seats ground, might as well do the exhausts too while it's apart. Mine had the wrong valve springs so had to replace them. One head was warped a little so I had to cut both of them to keep them equal. At this point I was into them another $500 plus the purchase price. I could have bought a new set for the same money.

Go new unless you can have them disassemble and inspected first.

Kelly


1967 Fairlane 500 XL, Originally 289 4 Speed, now 331, TFS heads, Weber carbs, 4:11 nine inch, T-5.
1978 Fairmont Futura 5.0 AOD
1977 Maverick 4 door 302 C-4 future race car.
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post #4 of 5 (permalink) Old 01-31-2014, 09:14 AM
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Re: Question on used AFR 185 head purchase

When I built my 347 about five years ago I found a set of new in the box AFR185's from a private seller that bought them and decided they weren't going to work for his build and sold them on eBay. I ended up winning the bid for $1,010.00. I added Scorpion roller rockers for $200 or so along with a Comp roller cam (224/232 duration, .555/.565 lift), an Edlebrock Performer RPM intake and a Proform 750DP. It turned out to be a great combo and I couldn't be happier!

Good luck!

John


'65 Falcon Futura 347 stroker. Comp roller cam, 10.8:1, RPM intake, 750 DP, AFR185's, C4, 9-inch https://www.fordmuscleforums.com/gara...ehicle_id=1106
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post #5 of 5 (permalink) Old 01-31-2014, 05:30 PM
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Re: Question on used AFR 185 head purchase

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Originally Posted by cmefly View Post
I would pass on that deal. the New AFR 185 heads flow even better for a little more money. If you do buy New heads make sure they come with the proper valve springs for your cam. Ed Curtis at FTI may be worth looking into AFR 185 Outlaw Cylinder Heads - 58cc - FlowTech Induction I am not a big fan of used heads as it can be risky. You will need to tear them down and check everything. If you end up needing any work you could be at the cost of new heads real quick.
I cant say enough good things about Flowtech Induction. These guys helped me out huge. Great to deal with and fair pricing. Thanks to them my otherwise limited Estreet heads can handle 7000rpm.

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