ideal head for my 331

Rick 91GT said:

I would pick an AFR185 over a Vic Jr anyday of the week if your talking out of the box. I just haven't been impressed with the results on motor's I have built with good matched combo's.

The TFS will work great but they are a little small for a 331 right out of the box depending on your exact combo, but for $700 I would not pass them up. Your combo is going to peak by 6000-6100 rpm anyways with the cam and intake combo you are looking at.

I have a customer with a standard TFS head, alot of work done to them (but they are not as good as some of the profiles that are out now)on on his 345ci NA motor it goes 9.49 @ 142.4mph on MT D/R's ALL MOTOR

Just be prepared when buying used parts, I would have them tanked, check and you may need springs depending what model TFS head they are so you do not float them with the Stage III cam, add new Viton seals as well $21

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blkcobra50 said:

Probe with TW heads work but I contacted Probe about notching the pistons for use with AFR heads and they told me that notching is required. I really like my TW heads on my 331. Down the road if I want more power I can always have them ported!

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Grn92LX said:

$700 is a decent price for used twisted wedges but don't forget to factor in the NEEDED valve spring swap, clean up mill and rockers/pushrods.

I say just do the victor jr's. I have yet to see any other head out of the box with nothing more than a casting flash clean up make 466rwhp at 6,200 rpm in a n/a pump gas 347.

I run unported twisted wedges on my stroker. It runs very good. With a 3" exhaust swap I would guess it would dyno around 400rwhp, but I could care less what it dyno's. If money was no object I would have sold my TW heads from my 302 and gone with victor jr's.

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Grn92LX said:

Then just do the twisted wedges and run 10's on the gas all day long (til the bottle runs out)

Or build a killer n/a combo and forget all about the squeeze

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Rick 91GT said:

I build mainly with the Probes SRS series and they do not need the refliefs cut for a AFR 165,185 or 205 (haven't check them with a 225 yet)

What series piston are you using the FPS?

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Rick 91GT said:

Nice head finally saw a set in person the other day.



If your planning on spraying, the Vic Jr will have the edge with a larger port volume intake and exhaust. With N2O you are only as efficent as your head is, if you can't get the waste out the exhaust port you will not make any more power. AFR does offer the larger N2O exhaust port package.

If you want a 200cc+ head the 205cc listed above, the AFR205, Brodix Track !'s etc....all are an excellent head. I hear the RNS stuff is going to surprise people as well.

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86bluecobra said:

I tell you sir i like my vic jr's. The thing is with them there is room to grow. head work can get them to flow tons more then they do out of the box. They are also much cheaper then the other heads that are comparible to them. I know one thing with them is that since i installed them i had troubles hooking launching on the juice. I tryed at our local 1/8 mile. got a 2.4 60 foot. Previously with the holley systemax II heads i would get 1.8's launch on juice. (1.6 at a properly prepped track) now with the vic jr's i was turning the same time as the holley heads but i was hitting the juice half way through second. Need to get some suspension work done and see what it will do with nitrous launch's again.

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