Thread: I need to know some specs for my 351 heads

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I have a set of what i think is 1975 351w heads. The numbers I found are D5AZ - 6049 - B3 4E13 9902-6049. I have looked arround on the net for about a hour or so and can not find any info. Any help would be appreciated

Well,the D5 means 1975, but the rest...???

i wanted to know valve
size combustion chamber size

Okay, the D5 is 1975. A means Galaxie, Z is Ford service parts (replacements?). 6049 is the number for all heads. B is 351-2V. They'll be small port, big chamber heads. Nothing to get excited about, but they will work for mild street use.

so you dont know anything about valve size and combustion chamber? Should i get these shaved down a little. I was looking for something that had 184 154 valves and 60.9 cc combustion chambers. That is what i was told they were over the phone when i ordered them. But im not too sure about this now.

Sounds a bit small on the cc's. It just doesn't mesh with what FoMoCo did during those years (to me anyway...these ford guys here can straighten me out) You can still get great production out of these things with some TLC and elbow grease. Valving, bowl work etc.

1.782 Intake ( actual spec for replacement valves )

1.461 Exhaust ( Actual spec for replacement valves )

cannot verify CC's but for $20 Jegs sells an economy cc kit.

humm those heads sound like a waste of money. I had good heads on my car. I dunno what to do.

Originally Posted by zackmx

humm those heads sound like a waste of money. I had good heads on my car. I dunno what to do.

Trick Flow Twisted Wedge, they make them for 351 Windsors. just be prepared, there gonna cost.

could port the heads, and have them cut for bigger valves, but, it's gonna cost.

The first thing I would do is post exactly what you are planning on doing ,is this just info for a stock replacement or a performance application?
What heads were on the motor?
The more info you give ,then more specific answers can be given.

I got a 670 street avenger rv cam. Long tube hedders. Built c4. 4:11's Preformer intake. I was doin a budget buildup. I thought i was getting d00e heads. I dunno what to do to these heads. I was thinkin of shavein them 40thou. what else i can do for cheap i dontknow. How much would bigger valves be?

Home porting can be done cheap,a book and a few bits and your on your way!!!Shaving the heads you have to be aware that the intake may no longer seal correctly,I am not sure at what amount this starts to happen?
Do the new heads have the same size chambers as the old heads ?

If the guy lied to you about what the heads were, why don't you just go get your money back and get the heads you want??? The smoggers you have now aren't worth sticking much money in IMO....

There are many ok, fair and even good OEM heads available. Unfortunately, these that you have are not. 351cid D0OE-C/G, GT40Ps from Expolrer's and Expeditions to name a couple are pretty good. Then you get into a bazillion or so after market iron and aluminum heads that start fairly inexpensively and go up from there. It all depends on what you want to do with the car in the end and how many $$ you have to get to that point.

Originally Posted by Irelands child

There are many ok, fair and even good OEM heads available. Unfortunately, these that you have are not. 351cid D0OE-C/G, GT40Ps from Expolrer's and Expeditions to name a couple are pretty good. Then you get into a bazillion or so after market iron and aluminum heads that start fairly inexpensively and go up from there. It all depends on what you want to do with the car in the end and how many $$ you have to get to that point.

A question, Dave... What years Explorer's have the GT40P's???? Could always use an extra set of Windsor heads and the weather is almost nice enough to go do a bit of junk yarding!!!! Wouldn't mind finding a set....