Is your bird running hot now or you're just expecting it to? Many other parts to the cooling system that can cause issues:
Make sure radiator flows well and isn't clogged; water pump divider spacing; spring in lower hose; AC car upper baffles between radiator support and nose; lower air baffle (also AC cars)
More reading here: http://forums.maxperformanceinc.com/...d.php?t=395910
If you still want an aluminum radiator the suggestions above are all great. The Summit Racing aluminum 2-row radiator is in my 69 - has worked great for me:
https://www.summitracing.com/parts/s...rd?prefilter=1
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Will Rivera
'69 Firebird, 400/461, 290 Eddy D-Ports, HR 230/236, 4l80E, 8.5 Rear, 3.55 gears
'69 LeMans Vert, XS 350, #47 heads, TH400, 10 Bolt 3.23 gears, work in progress
‘66 Lemans, 455, 310 KRE D-Ports, HR 236/245, TH400, GV OD, 12 bolt 3.73 gears - see it here:
https://youtu.be/RP_s1wJKm_Y?si=K0NZxoTyaGcj8Dcb
Last edited by grivera; 11-24-2019 at 05:01 PM.
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