Headers flange differences

Is an a460 exhaust flange the same sne n bolt pattern as a c460 or d460...
Never rsn an a head n wasn't sure.
Thanks
Jason

bbfdragster wrote:Is an a460 exhaust flange the same sne n bolt pattern as a c460 or d460...
Never rsn an a head n wasn't sure.
Thanks
Jason

I'm having a hard time understanding your question (sne n, rsn, n), but the answer is no. They are not the same.

Charlie

Sorry... I think I type correct.. But ur answer is wat I thought... Thsnks for verifying Charlie

Bolt patterns different or center or ports too??
Found a set of a460 headers is was thinking of trying to re flange so I could try s stepped header on the dyno ...
Thanks again guys

I believe the spacing is also different, the C-head is a bit larger

The A460 exh is bbc pattern.....c460 is it's own deal.

Is the C460 and profiler exhaust flanges the same?  I believe so but just want to verify. If so, where can I get some?

psfracer wrote:Is the C460 and profiler exhaust flanges the same?  I believe so but just want to verify.  If so, where can I get some?  

The exhaust bolt hole pattern is the same "Pro Stock" pattern on both heads. However, relative to the bolt holes, the port exit is in a different location. Since you bought the heads from Bob and Kyle, imo the most logical thing to do is just have Kyle custom build your headers for you. He can make the flanges and everything since he is a race car fabricator.

Charlie

Lem Evans wrote:The A460 exh is bbc pattern.....c460 is it's own deal.

Be careful Lem ... some A460 exhaust bolt patterns are on 4.9" spacing and others use headers which are on 4.840" spacing, Some, the ports are on 4.900" spacing but the bolt pattern is 4.840".

rmcomprandy wrote:

Lem Evans wrote:The A460 exh is bbc pattern.....c460 is it's own deal.

Be careful Lem ... some A460 exhaust bolt patterns are on 4.9" spacing and others use headers which are on 4.840" spacing, Some, the ports are on 4.900" spacing but the bolt pattern is 4.840".

 
 
   And, that's the reason I try to always say "pattern" not spacing. You are correct.....it does make a difference.