what is a cross boss and manifold worth? my friend has one.
As with everything condition, condition, condition is a big determination in the value of the CROSS BOSS intake and carburetor. In addition to that which carburetor the D0ZX-9510-A (875 CFM) the D0ZX-9510 (1425 CFM) brings a lot to the table. The "B" carburetor is useless on the open plenum CROSS BOSS intake manifold. So if you have a "B" carburetor and the single four intake manifold you find yourself shopping for the "A" carburetor. I have heard stories about these carburetors being NOS but spent the best part of the last 50 years on display not in the best environment and having slight corrosion on the insides of them. A few have been abused, so even being brand new doesn't necessarily make them usable. Typically it is best to have your carburetor prepared for use by Kelly Coffield. He supports all the spare parts you would need.
As for the bigger "B" carburetors they are happy used in an IR application.
John
As an update to this thread and since this litle project grew out of the tuning of Mark's BOSS 302. I thought I'd share some pictures of a system that Kelly and I are putting together, Not to produce, but as a proof of concept piece as to what FoMoCo should have done with the BOSS 302 and IR Autolite Inline Carburetors. Anyway it is a project that Kelly Coffield and I wanted to explore after conversations regarding Mark Hovander's BOSS 302 CROSS BOSS tuning. So Kelly cast up the intake, The front cover and several other supporting pieces. Where as I'm supplying the engine, and building the internal parts for the extended distributor drive and the oil pump drive unit. The concept is to use only items that were available in 1970.
Picture #1 is;
The modified package sitting next to a concours engine package to show the package size comparison.Picture#2 is;
Due to the shorty water pump being used the extended timing cover size difference is only 7/16" longerPicture #3 is;
The height of the carburetor mounting pads are level on the Autolite Inline intake, the front of the factory intake is lower than the height of the Autolite Inline intake but the rear of the Autolite Inline intake is lower than the factory intake.
Picture #4 is;
The difference between the straight edge on the stock water pump pulley mounting flange to the shorty pump water pump flange pulley.
Here is a link to the BOSS302 Registry where the more complete story resides. Including links to videos and the Hemmings story regarding casting the intake and parts.
https://www.boss302.com/smf/index.php?topic=88291.0