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Old 09-30-2013, 02:22 PM
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SB Ford heads

OK - got an urge to build something new and different for my '31 roadster so am planning a 331 stroker (I'm not a fan of the 347 stroker for a couple of reasons). I'm NOT a racer, so what I'm looking at are a set of heads that are a decent upgrade from the OEM's that I have (GT40P somewhat modified iron heads) and a decent streetable design. I've read lots of press, manufacturers blurbs, a few reviews and a couple of engine builder's opinions. I haven't chosen a camshaft yet to match them to, but it may be a custom roller grind or even a Ford 'letter' roller - but that's not what this thread is about. OK - with that said, it looks like it's a toss up between these guys right now:

-1
Trick Flow® Twisted Wedge® 170 Cylinder Heads for Small Block Ford TFS-514100002-M61 (http://www.summitracing.com/parts/tf...view/make/ford)
or:
-2
AFR SBF Street/Strip 165cc Renegade 20 Degree Heads 1399 or the 1388 185cc version (http://www.summitracing.com/parts/af...view/make/ford)

I'm just asking opinions which may help me decide on which to use. The TFS are about $1200/pair while the AFR's are just over $1500/pair, a significant difference to consider as well.

Dave W

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Old 09-30-2013, 04:20 PM
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what are the flow rates of each head,and how many ponies do you want? then choose the heads that make that job the easiest.just math,,,,
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Old 09-30-2013, 05:44 PM
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Originally Posted by Irelands child View Post
OK - got an urge to build something new and different for my '31 roadster so am planning a 331 stroker (I'm not a fan of the 347 stroker for a couple of reasons). I'm NOT a racer, so what I'm looking at are a set of heads that are a decent upgrade from the OEM's that I have (GT40P somewhat modified iron heads) and a decent streetable design. I've read lots of press, manufacturers blurbs, a few reviews and a couple of engine builder's opinions. I haven't chosen a camshaft yet to match them to, but it may be a custom roller grind or even a Ford 'letter' roller - but that's not what this thread is about. OK - with that said, it looks like it's a toss up between these guys right now:

-1
Trick Flow® Twisted Wedge® 170 Cylinder Heads for Small Block Ford TFS-514100002-M61 (http://www.summitracing.com/parts/tf...view/make/ford)
or:
-2
AFR SBF Street/Strip 165cc Renegade 20 Degree Heads 1399 or the 1388 185cc version (http://www.summitracing.com/parts/af...view/make/ford)

I'm just asking opinions which may help me decide on which to use. The TFS are about $1200/pair while the AFR's are just over $1500/pair, a significant difference to consider as well.

Dave W
Both heads are excellent, but I lean to the TFS with matching pistons and a high lift cam.

Bogie
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Old 09-30-2013, 06:17 PM
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Both heads are excellent, but I lean to the TFS with matching pistons and a high lift cam.

Bogie

That's kind of the way I'm thinking as well (but still swaying), but I am trying to stay away from a 'race' engine vs a warm street. Those TFS 170 heads that I referenced don't appear to require dedicated TFS style pistons as their race versions (205 etc) appear to need.
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Old 09-30-2013, 06:23 PM
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Originally Posted by Irelands child View Post
That's kind of the way I'm thinking as well (but still swaying), but I am trying to stay away from a 'race' engine vs a warm street. Those TFS 170 heads that I referenced don't appear to require dedicated TFS style pistons as their race versions (205 etc) appear to need.
I use those TFS on my 306 with a F303, it works very very well....you wouldn't be dissapointed
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Old 10-01-2013, 06:14 AM
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what are the flow rates of each head,and how many ponies do you want? then choose the heads that make that job the easiest.just math,,,,
Already have - and that's why I've asked for opinions and hopefully that based on useage. It ends up with a 'pick your point' on the flow chart. Under shop CONTROLLED conditions TFS have marginally better inlet flow with AFR's quite a bit better in exhaust. Unfortunately it's just not that easy.
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Old 10-01-2013, 07:37 AM
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Both are good heads,but,I would also lean more to the 170cc tRick Flows.I think they would be a better match on a 331 cube engine.
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