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Old 06-15-2026, 10:57 PM
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SD421 SD421 is offline
Ultimate Warrior
 
Join Date: Jan 2005
Location: Concord,CA
Posts: 1,168
Default Opinions On This “Line”

Im reassembling my motor and noticed this.(see pics)
Any ideas on this straight line on the snout of the crank?
Ive never see this before.
I sent this pic to my machinist. His response is that it’s not a crack Cracks dont create a straight line.
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1966 GTO

1966 421-10.1-1 comp-Race Tec 23cc Pistons
KRE Tri-Power
KRE 65cc Aluminum Heads
XE274 cam by Comp Cams
DUR 230 Int 236 Exh @.050 - 110 LSA
LIFT .491" Int .491" Exh
Tri-Y-Headers by Tribal Tubes w/ Goerlich Mufflers
1966 Muncie Wide Ratio 4-Speed
1968-72 Chevy 12 Bolt Rear End w/ 3.73 rear gears