Reply to "aluminum heads"

Take a look at this. See if it answers any of your questions.

http://www.fordmuscleforums.co...ntera-403c-dyno.html

You could rebuild what you have presuming it is a 4v iron head closed chamber engine, with new valve train components and someone who knows how to make the iron heads flow well like McLain, that is easily a 7000 rpm engine and 500hp, even as just a plain jane.

The bottom end in a 4 bolt D2AE-CA block, crank and rods were run in Nascar and Pro-Stock back in the day. They aren't wimpy components.

You will need a really good balancer like the Boss/HO unit and you need to do something with the exhaust system in the car.

Wilkinson claims to have fixed the restrictive stock Pantera muffler problem with his repros but keep in mind that even the "european GTS Pantea" headers are showing short comings in dyno testing.

This really explains the prevelance of 180 headers in Panteras lately.

Back in the days when Shelby was running 289 race Cobras and 289 GT40's in the same races, it was thought that the "bundle of snakes" headers on the 40's were worth around 100hp under race conditions.

DJ has got "Mad Dogs" old 180's for testing but to my knowledge hasn't got around to them yet.

That test I'm waiting for since my headers were out of that same group build with the high port flanges for the A3 heads.

I won't predict what they are doing back there but as the driver I can definitely say...sumtin' goin' on back there wit um?