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Dwight Southerland · 08-10-2011, 04:36 PM

A56 -

That's the story that has gone around, but the intake manifold casting number on NHRA's Tech Bulletin is the cast iron intake shown in the pictures on my last post. So I am questioning that the D4B has been accepted. If they can run it with no documentation, then that opens up a whole new set of worms. But, if the factory issued D4B has that same casting number, that's a different story. Does anyone know what casting number was put on the factory D4B?

08-10-2011, 04:36 PM	#30
Dwight Southerland VIP Member Join Date: Dec 2001 Location: Arkansas - In the middle of everything. Posts: 2,001 Likes: 64 Liked 780 Times in 194 Posts	Re: Fly Weights A56 - That's the story that has gone around, but the intake manifold casting number on NHRA's Tech Bulletin is the cast iron intake shown in the pictures on my last post. So I am questioning that the D4B has been accepted. If they can run it with no documentation, then that opens up a whole new set of worms. But, if the factory issued D4B has that same casting number, that's a different story. Does anyone know what casting number was put on the factory D4B?