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Paul Ceasrine · 06-23-2010, 08:55 AM

The article about the special "Crane" heads for the 69' AMX S/S car,
was that they utilized Mopar 440 valves.
The 69' 'Crane' heads were good, but in 1970 the 'dog-leg' design
exhaust ports flowed much better, than the flat-style 69' heads.
Does that sound correct Jeff.
I guess, AMC wanted to utilize the 70 'dog-style heads' for the 69 S/S cars,
but could not.
They would have to build another (50) 70' AMX S/S cars. Instead they offered 70' front-end conversion kits and replacement trim components and dashboard units. NHRA would not legalize that conversion, due to the
fact that the 70' AMX frame had a longer wheelbase than the 69' car.
I think thats in the ballpark.
Either way, AMC got somewhat screwed.
PC

06-23-2010, 08:55 AM	#4
Paul Ceasrine VIP Member Join Date: Apr 2009 Posts: 2,546 Likes: 0 Liked 10 Times in 10 Posts	Re: 69' amx The article about the special "Crane" heads for the 69' AMX S/S car, was that they utilized Mopar 440 valves. The 69' 'Crane' heads were good, but in 1970 the 'dog-leg' design exhaust ports flowed much better, than the flat-style 69' heads. Does that sound correct Jeff. I guess, AMC wanted to utilize the 70 'dog-style heads' for the 69 S/S cars, but could not. They would have to build another (50) 70' AMX S/S cars. Instead they offered 70' front-end conversion kits and replacement trim components and dashboard units. NHRA would not legalize that conversion, due to the fact that the 70' AMX frame had a longer wheelbase than the 69' car. I think thats in the ballpark. Either way, AMC got somewhat screwed. PC