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Was looking at a big block installation in a '69 coupe with a/c this weekend. The 427 had AFR aluminum heads and hooker headers. Everything fit well except for the header tube closest to the firewall on the passenger side. The a/c box that protrudes from the firewall had to be "shaved" back so as to eliminate contact with the rear-most exhaust tube. Even then, it was a close fit; too close even for an effective heat shield. Has anyone else had a similar dilemma and a solution? I am about to drop a 454 into my '69 and want to avoid this problem.
Go to the Hooker web site and look at the charts. Some of the BBC headers are listed as not for AC cars. I have a set that is listed for a AC car and they fit fine.
Thanks for that piece of advice about website. Yes, have t-tops, but summers here are often 100+ with gobs of humidity; a/c is still less expensive than moving to San Diego. Beautiful city, by the way.
There is alot of room in the A/C box to cut it back. I cut mine back and fiberglassed a patch over the new hole - thought about making an alumninum panel with zuse fasteners for easy removal , but fiberglass was faster. On top of the patch I put some of that stick-on heat reflective stuff (name eludes me right now). Got enough room for the headers and to get head bolts out.