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Old 04-04-10, 10:16PM   #1
ckmam
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Default 428 engine id question

What is difference between YH and YL code?
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Old 04-05-10, 08:28AM   #2
GREATGTO
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Year Engine HP Engine code Trans CR Cam Head Code BBL Carb No. Misc

YL=1969 428 360 HP YL A 10.5 066 46 1-4 7029268 30 deg int. Bonneville Block Casting # 9792968

1967 428 360 HP YH A 10.5 067 670 1-4 7027262 Block Casting # 9786135
1968 428 375 HP YH A 10.5 067 16 1-4 7028268 GP Block Casting # 9792968
1969 428 360 HP YH A 10.5 066 46 1-4 7029268 45 deg int. Bonneville Block Casting # 9792968
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