Unidentified Head

Noobz347 · Nov 20, 2011

No, this is not about LaserSVT's latest conquest...

I have a set of aluminum heads sitting here with the following markings:

BX00

405

0305-0405-0797

There's nothing else that I can find. Does anyone have any info on what these might be? google turned up no useful result.

Thanks!

Shaolin Crane · Nov 20, 2011

Pictures say 1000 words

Noobz347 · Nov 20, 2011

I'll snap some tomolly and post em up.

Noobz347 · Nov 22, 2011

Well... here it is (for all the good it does):

Opposedodie · Nov 22, 2011

They look like a Nice set of Heads... I will test them for ya ...

5LiterCOOP · Nov 22, 2011

NEW FORD SB COMPLETE ALUMINIUM CYLINDER HEADS

They look like a set of Pro comp heads.

Shaolin Crane · Nov 22, 2011

Beat me to it, but pro junk it is

Noobz347 · Nov 23, 2011

5LiterCOOP said:
NEW FORD SB COMPLETE ALUMINIUM CYLINDER HEADS

They look like a set of Pro comp heads.

That's kinda what I was thinking too. What's generally the issue with these heads? Do they have quality control problems?

2000xp8 · Nov 24, 2011

Noobz347 said:
That's kinda what I was thinking too. What's generally the issue with these heads? Do they have quality control problems?

Whatever can be wrong with a head, IS wrong with these heads.
Issues with valves sealing, valve guides, valve train geometry etc.
You will certainly spend more than their worth to make them right.

Noobz347 · Nov 26, 2011

I'll probably just sell them and get something else. I put the E7s back onto the project car.

I ended up with (as far as I can tell): In no particular order...

An unknown (for sure) displacement short block It's a 306 at mimimum. Longer Ford V6 rods were used but I'm unsure if the OEM crank was reused.

E7 Heads (installed with ARP studs)

Anderson B cam

Typhoon Intake

75mm TB

20 lb injectors (the black ones)

255L intank FP

MAC Long Tubes

410 rear and a spool

MM K-Member

MM A Arms

Rear Mounted battery

Front Coil-Overs

Anderson LCAs

OEM MAF (until I can get it running and before I put something else on it)

This thing was destined to be a track only car when I came by it. The end goal is to put it back together and make it streetable.

Noobz347 · Nov 27, 2011

2000xp8 said:
Whatever can be wrong with a head, IS wrong with these heads.
Issues with valves sealing, valve guides, valve train geometry etc.
You will certainly spend more than their worth to make them right.

You think so? Even though I have all the pieces and parts (valves, springs, keepers, etc.) to build them up?

What's the general cost for a machinist to look it all over and make them right, if necessary?

2000xp8 · Nov 27, 2011

Noobz347 said:
You think so? Even though I have all the pieces and parts (valves, springs, keepers, etc.) to build them up?

What's the general cost for a machinist to look it all over and make them right, if necessary?

My machine charges $250 for a valve job, bowl clean up and spring seat pressures, but that's no parts included and no real head issues on quality heads.
If the ports have to be reworked, the heads aren't flat and the valvetrain geometry is poor, the price goes up substaintially.
I know milling is another $100, forgot how much to mach up the heads with the intake to port match costs (not gasket match).
Springs depending on your cam.
It adds up quick.
I wouldn't want to be any more money in them than you could sell them for.

If they were a used set of afr's or tw's, you would barely take a loss if you invested money in them, that can't be said about all heads.

Last car i saw with them was a carb'ed 408 (or similar can't remember but it was a 351 based stroker) and it made around 360 if i remember correctly. Not exactly setting the world on fire for a 408.
BUT, that set had not been to a machine shop and the engine was a home grown debacle, so....

Edit: as i re-read your post you asked what it would cost to look at them.
From my experience, there is no looking at them, i'd say the minimum is a valve job, which my buddy who owns the shop that puts most of the cars together has traditionally required, whether you like it or not due to inconsistancies in heads.

Noobz347 · Nov 27, 2011

So far it sounds as if these heads would require the same attention as a bare head from just about any manufacturer... The only difference is that maybe some portion of the head is out of alignment to begin with.

So... If they a once over for measurements to ensure that they're not a set of boat anchors then the valve job etc. would be the same money that I'd put into a set of bare heads from any other manufacturer; correct?

2000xp8 · Nov 27, 2011

Ya, i'd say if all goes well you will be $250 deep.

Noobz347 · Nov 28, 2011

2000xp8 said:
Ya, i'd say if all goes well you will be $250 deep.

That actually makes sense. These heads sell for about that much less than a set from say... Edelbroc.

So I'm thinking it might be worth the effort to have them looked over... Maybe even built up.

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