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mid 70's NOS Mullen small block race heads #1917537
09/22/15 06:01 PM
09/22/15 06:01 PM
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Saline, MI
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efisixpack Offline OP
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I picked these up in a package deal. Part number on box is7007194. Part number on head is 3769974. I have a matching pair. I really don't know their history or viability of use (any good to use?) so I thought I'd ask. What were these originally for? They are fully ported/polished and marked Mullen. They have "360" cast into he head as well. I even have the original boxes which I think are cool. The only think I find odd is the intake bolt pattern is slightly changed . It can be reversed easily, but why do that in the first place? Anyone familiar with these? I'll try to post some pics. Thanks in advance.

Last edited by efisixpack; 09/22/15 06:04 PM.

When I die I want to go like my Grandfather did, quietly in his sleep. Not screaming like the passengers in his car.
Re: mid 70's NOS Mullen small block race heads [Re: efisixpack] #1917538
09/22/15 06:02 PM
09/22/15 06:02 PM
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Another shot


When I die I want to go like my Grandfather did, quietly in his sleep. Not screaming like the passengers in his car.
Re: mid 70's NOS Mullen small block race heads [Re: efisixpack] #1917548
09/22/15 06:20 PM
09/22/15 06:20 PM
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Probally has the W2 intake bolt pattern on them scope IHTHs


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: mid 70's NOS Mullen small block race heads [Re: efisixpack] #1917559
09/22/15 06:36 PM
09/22/15 06:36 PM
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Batten anything is probably worth using as long as they are viable and don't have any major issues. 974 casting heads are basic small block, like late 70's, early 80's maybe?

Rocker stands are milled, looks like the push rod pinch might be gone too, can't tell clearly from the pics. Chambers look nice. Are those chambers milled flat?

What would the intended usage be?


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Re: mid 70's NOS Mullen small block race heads [Re: RMCHRGR] #1917564
09/22/15 06:41 PM
09/22/15 06:41 PM
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Lynchburg, VA
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I had a set. TA rocker gear for offset pushrods. Intake bolts are moved to also clear pushrods.


Career best 8.02 @ 169 at 3050# and 10" tires small block power.
Re: mid 70's NOS Mullen small block race heads [Re: efisixpack] #1917571
09/22/15 06:49 PM
09/22/15 06:49 PM
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Mullen contributed a lot to the SA Design series book: The "Mopar Smallblock Handook" and then the more popular "Mopar Performance" book

Troy's old Challenger T/A had heads that were done at Mullen. 30K original car that original owner put headers, cam, and those heads on. Steve70 now owns that car with those heads on it.

The heads had Mullen stampings. Steve70 has a picture CD with detailed pics of those heads.



SBMoparHandbook194Sm1.JPGSBMoparHandbook1974Sm3.JPGSBMoparHandbook1974Sm4.JPGSBMoparHandbook1974Sm2.JPG
Last edited by autoxcuda; 09/22/15 07:10 PM.
Re: mid 70's NOS Mullen small block race heads [Re: efisixpack] #1917572
09/22/15 06:49 PM
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Sorry, 974 is in fact a mid-70's casting #, looks like 1976.

Did Direct Connection offer a factory ported iron head? They have a lot of W2 characteristics. Bet they flow pretty well.

I saw a peculiar pair of heads they did on Ebay a few years ago. The way they did the ports, they got huge numbers in the lower lifts but not much past like .550 or so said the accompanying flow chart. Maybe they were for circle track? Don't know but they always stuck in my head for that reason.

Would be cool to see what these look like on a flow bench.


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'17 Ram 1500
Re: mid 70's NOS Mullen small block race heads [Re: efisixpack] #1917585
09/22/15 07:07 PM
09/22/15 07:07 PM
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The Mullen heads that were on a Challenger T/A Troy restored.

My mistake the exhausts are not numbers. But there is a Mullen number underneath the center exhaust ports.

PICT1254.JPGPICT1249.JPGPICT1247.JPGPICT1246.JPG
Re: mid 70's NOS Mullen small block race heads [Re: efisixpack] #1917611
09/22/15 07:52 PM
09/22/15 07:52 PM
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Thats interesting as ive a set of 76 W2-s marked in the same fashion that I thought were from petty, possibly not after seeing these heads.

Can you post a better pic of the stamped area under the center ex ports and I will do the same.

Re: mid 70's NOS Mullen small block race heads [Re: Porter67] #1917623
09/22/15 08:06 PM
09/22/15 08:06 PM
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Originally Posted By Porter67
Thats interesting as ive a set of 76 W2-s marked in the same fashion that I thought were from petty, possibly not after seeing these heads.

Can you post a better pic of the stamped area under the center ex ports and I will do the same.


This is the highest res I have. There might be more marking than just this. shruggy Have to ask Troy and Steve70.


Copy of PICT1254.JPGCopy of Copy of PICT1254.JPG
Last edited by autoxcuda; 09/22/15 08:08 PM.
Re: mid 70's NOS Mullen small block race heads [Re: efisixpack] #1917626
09/22/15 08:09 PM
09/22/15 08:09 PM
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Bob Mullen , probably good heads to use unless they are max ported . Which they don't look like.

Re: mid 70's NOS Mullen small block race heads [Re: ademon] #1917634
09/22/15 08:20 PM
09/22/15 08:20 PM
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Saline, MI
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Here's a better shot of the lower exhaust port area.


When I die I want to go like my Grandfather did, quietly in his sleep. Not screaming like the passengers in his car.
Re: mid 70's NOS Mullen small block race heads [Re: efisixpack] #1917649
09/22/15 08:39 PM
09/22/15 08:39 PM
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I think the heads are worth more money as Mullen collector items than they are as performance parts. Maybe someone restoring a Day 2 type of car would want them. Mullen was a heavy hitter in the day, super cool to see a set of his heads like that.

Re: mid 70's NOS Mullen small block race heads [Re: efisixpack] #1917652
09/22/15 08:45 PM
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Mine are stamped SPS-1498 Might just be a common are for that era.

Re: mid 70's NOS Mullen small block race heads [Re: Porter67] #1917662
09/22/15 09:01 PM
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Honestly I don't know what to do with them. Realistically, I don't see myself building a small block in the near future, but I love finding and learning about these old parts. I would assume there isn't a lot of value in them considering all the new heads out today. You are probably right Andy, it will take a guy doing a day2 car to show interest in them, assuming I decide to let them go.

Here's another shot for giggles.


When I die I want to go like my Grandfather did, quietly in his sleep. Not screaming like the passengers in his car.
Re: mid 70's NOS Mullen small block race heads [Re: efisixpack] #1917727
09/22/15 10:33 PM
09/22/15 10:33 PM
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Yeah I don't know why the average guy would want a set of ported iron heads when he can buy Edelbrock or Indy heads that flow better and weigh half as much.

But if someone is restoring a period correct type of car then it would be extra special to have some Mullen heads on it. You can't really do a correct Day 2 car with Indy heads.

Re: mid 70's NOS Mullen small block race heads [Re: efisixpack] #1917740
09/22/15 10:48 PM
09/22/15 10:48 PM
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efi, could you possibly post a better pic of the intake bowls??

They don't appear to be finished or maybe that's the intended contour they were going for.

I recently "hogged" out a set of late 70's 360 heads last winter. Got them cheap/free in a pkg deal, they were milled to about 67 cc's and my machinist freshened them for $350. They'll go on a warmed 318 for my sons high school/bracket car.

Most of the entry level guys have been financially pushed out of the hobby but there's a few of us languishing in the shadows.


R.I.P.- Gary "Coop" Davis 02/09/68-05/13/04
Re: mid 70's NOS Mullen small block race heads [Re: Dean_Kuzluzski] #1917742
09/22/15 10:53 PM
09/22/15 10:53 PM
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Saline, MI
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Does this help Dean?


When I die I want to go like my Grandfather did, quietly in his sleep. Not screaming like the passengers in his car.
Re: mid 70's NOS Mullen small block race heads [Re: efisixpack] #1917774
09/22/15 11:36 PM
09/22/15 11:36 PM
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Probably not worth a bunch, but a cool part of history!


Alan Jones
Re: mid 70's NOS Mullen small block race heads [Re: efisixpack] #1917777
09/22/15 11:37 PM
09/22/15 11:37 PM
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Yes, Thanks!
Always interesting to see how the pro's did it.


R.I.P.- Gary "Coop" Davis 02/09/68-05/13/04
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