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Discussion Starter #1
Hi all,

I'm rebuilding my 1973 Ranchero's 429 and need some advice. I'm using the block, pistons and crank from the 73 (low mileage virgin block) but have the option of using the heads and exhaust from a 1970 block. Here are the numbers:

1971
Block: D0VE-A
Heads: D0VE-C
Exhaust Manifold: C9VE-9430A

1973
Block: D1VE-A2B (has the VIN on it)
Heads: D3VE-9431 A2A
Exhaust Manifold: D30E-9431 BA

Now to me, the heads look exactly the same. I've heard D0VE-C's are good heads, but from what I can find both pairs of heads are exactly the same...true? Also, what about the exhausts, they look different (73's are longer) but the ports look the same. What are your thoughts on what heads to use...btw, can I use the 73 pistons with the 70 heads?

Sorry for the long post, but I want to send this out to the machine shop soon.

Cheers
Rob
 

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Discussion Starter #3
According to the High Performance Ford Parts Interchange book:

1970 D0VE-C : 88cc
Valve Size: 2.09" Intake : 1.65" Exhaust
Port Size: 2.18" x 1.87" Intake : 1.99 x 1.30" Exhaust

1973 D3AE-A2A : 88cc
Valve Size: 2.09" Intake : 1.65" Exhaust
Port Size: 2.18" x 1.87" Intake : 1.99 x 1.30" Exhaust

How are they different..?
 

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The port shape is signifcantly different. I subscribed to that website I linked and won't give away too much, but they are.
 

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Discussion Starter #5
interesting site...thanks!
 
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