hey folks, I just got another mustangs. its basicaly stock except for shorty headers, off road h-pipe, ang flow master exhaust. I want to do a set of heads but I cant deside between gt40 and windsor 351 heads. please help, any info will be helpful. I need all the pros and cons.
The best Windsor heads were the '69-71 heads. The later cast iron GT40 heads that were put on the '93 Cobra were rumored to have been a slightly changed version of those heads. I would personally go with the GT40s over 351 heads...i just happened to get mine ported so i went with the Windsors. If you get 40s or 40P's you won't have to change over to stud mount rockers and guide plates and won't have to buy hardened pushrods.
I went with a set of 1970 351w, ported the exhaust, studded them, put oversized valves.. flowed good enough for 344hp 360torque at the flywheel with b-303 cam