[JChilders]

I know the intakes on a standard and tall deck are different. Are the headers different as well or are they interchangeable?

 

[rustbucket79]

Would depend on the design whether it's universal fit. A tall deck engine will lift the headers up and spread them apart. If you have a good header design that fits with good ground clearance/tight to the floorboards, they will not fit a tall deck engine.

 

[Chevelle505cid]

The intake manifold issue can be resolved with a adjustable slip collar MSD billet distrib.
There are also Tall deck intake manifolds machined to use the factory height collar distrib. I run a Edel. Victor 454 TD. I also use a MSD with the before mentioned adjustable slip collar. As far as header fit it can be a issue. Nearly all headers need clearanced to clear factory A- arm and Steering linkage on GM ( A ) bodied cars. That said Lemons headers fit tall and short decks alike VERY well. They are spendy but you get what you pay for. My next set of headers WILL be Lemons headers with Nitroplate.

 

[GRN69CHV]

I installed Dart heads w/ .300 raised exhaust ports and used the headers I already had, but these were only 1.75" x 3" headers. A tall deck would have raised the exhaust by .400 (.100 more),which still would have worked. A tall deck block combined with a raised exh port may or may not have worked. Only trial fit would know for sure. Think this is a lot more critical on larger diameter tubes.