adk61

iTrader: (5)

Question for the gods... will Big Chief headers fit a conventional 24 degree BBC head?? I've been told different stories from different people... I was of the opinion that the exhaust flange was slightly different

14 apache

iTrader: (1)

Same gaskets as standard heads but the angel on the flange is a few degrees different. Top is rolled towards valve cover.

If you want the angel let me know and ill check mine.

HaxbySpeed

The ones I have been around have a standard bbc pattern. It is quite a bit higher obviously, and I think at a slightly different angle.

HaxbySpeed

Posted at the same time. Thanks for confirming the angle

MILD THUNDER

iTrader: (3)

I cam across some stelling headers a few years back. they were stamped ''Pontiac" on the flange. No go for me. If I recall, yes, it was the angle that was different at the flange.

adk61

iTrader: (5)

Thanks Haxby, Apache and MT... it was the bolt pattern that concerned me... got stuck with a set of CMI's once that were supposed to be for BBC and they wouldn't bolt up, these would be for my cat.. and I'm using a fixed Y pipe for tail and need to be sure...

GPM

Just curious, are they Big Tubes

14 apache

iTrader: (1)

Think the header will tilt towards each other around 2" on each side.

adk61

iTrader: (5)

yes steroid tubes GPM and this would be ok being narrower, Apache, I can always run a spacer to make them wider if so needed, but won't work the other way around...

GPM

The 2.375 I ran wouldn't seal around standard exhaust ports.