Best option IMO, glass bead the intake, have it painted with HiTemp "AlumaBlast", then bake in a 400* oven for an hour. Did this to all my aluminum intakes and it lasted for years. And looked like it was not painted at all.
__________________
1969 GTO hard top ~ Std bore 400, '70-RA3 block, 670 heads, Bal. & Blue... M22, 12-bolt w/3:55s
|