[WRevels]

I have a 1969, 396 engine I'm rebuilding for my 69 Chevelle. The block is the original block with casting and date matching. However, the heads on the engine are 101 CC Chamber, Oval Port, Closed Chamber heads with casting 3909802. Are these heads good for this engine and todays driving. I've been told I should go to a larger CC head. Anyone have experience or recommendations?? If they aren't a good head for this engine, I would like to find the correct heads and trade or sell.

Thanks,

Chuck

[abe]

the closed chamber heads are fine but are considered dirty heads cause they dont have a cleaner burn like the semi open and open chamber heads. the best oval port heads to get are from the factory are 1971 -1974. here are the casting #'s. 3993820, 3999241 ( i've got these on my 396), 336781, and 353049. the have 113 CCV. even though u may have lower compression the engineers made these to meet the EPA requirements and the results are better emissions and improved breathing at higher RPMS.. anything under 6500 RPM's these are the best factory heads to get. No matter what anybody says.

[WRevels]

Thanks for the information. It's been ten years since I've worked on a BBC. Lost a 70 Chevelle and 57 Belair in a divorce. So pi-- off have stayed away from cars and restorations. But Hot Rodding is the blood and I'm back Have a great weekend.