mac 1 5/8" shortie question

[punksable]

i am trying to find out what heads will bolt up to my mac shortie's, i would like to go with cast iron if at all possible, i can get a nice set of explorer heads at a killer price. please let me know if ya all can and what my options are. thanks

[ddstang94]

If you want to use a set of gt40 P heads, you will not be able to use your stock mac shorties, however mac make a header specifcally to fit gt 40 p headers. Your heads will bolt up to any aftermarket heads TFS,AFR,EDELBROCK.

[punksable]

i was thinking there was a difference, thanks alot, i am just going to save up for some aluminum heads then.

[blknotch331]

If you want iron you could always go with the World/Roush 180's or 200's the flow is not quite as good as the alum. heads but they make good numbers and are about $350.00 cheaper than the t/f,afr's and edelbrocks. MM&FF did a test on all the major 5.0 heads a while back when I have time I will post the results if I remember right the Roush 180's made about 10 or 15 more ponies than the GT40P's.

[NoSlo5.0]

http://users.erols.com/srweiss/tablehdc.htm#Ford

This is easily my most favorite cylinder head research site in the world!