Everyone has an opinion; here's mine: Following the manufacturers recommendation is never a bad thing- I took the inners out. Also, as long as coolant temperature is in check, run it for 20-25 minutes varying RPM from 1800-2500.
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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; 07-16-2014 at 03:40 PM.
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