i am a little slow ..so bare with me...what exacty is a gt40 head...i just got a new 5.0 magainze and a dealer has some new gt40 heads..1.94..1.54 valves and they are aluminum for 600.00...what is the flow numbers and the cc runners of these..thank you

 

i found this..it probaly a repost but it is help full..http://www.corral.net/tech/powerplant/head_tech_3.html

 

oops..my fault they are 699.00

 

that seems a bit high, you'd be better off spending 400-600 on some afr's

 

i never knew or heard of the standard gt40 heads being aluminun. in the morning ill give ya the acutal specs on them.

 

do you mean an x head?