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Rory McNeil · 12-16-2011, 09:06 PM

I`m not sure if all the Edelbrock heads have no exhaust crossover passage or not, but I know many do. Yet with a factory head, you are not allowed to plug the crossover into the bowl area. Also, I`m pretty sure that not all the new heads approved use the same combustion chamber volume or valve sizes for every application that they are approved for. Interesting, eh?

12-16-2011, 09:06 PM	#11
Rory McNeil VIP Member Join Date: Jun 2007 Location: from Vancouver BC Canada, now in Nova Scotia Posts: 1,311 Likes: 317 Liked 1,104 Times in 302 Posts	Re: NHRA allows Alum heads in stock/ss I`m not sure if all the Edelbrock heads have no exhaust crossover passage or not, but I know many do. Yet with a factory head, you are not allowed to plug the crossover into the bowl area. Also, I`m pretty sure that not all the new heads approved use the same combustion chamber volume or valve sizes for every application that they are approved for. Interesting, eh? __________________ NHRA 6390 STK M/S 85 Mustang