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PY Online Forums - Bringing the Pontiac Hobby Together > Classic TECH- specs, codes, resto issues FORUMS > 67-69 Firebird TECH > #18 cylinder heads
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Old 08-15-2021, 11:55 AM
rascal455ho rascal455ho is offline
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Default #18 cylinder heads
Do these heads have screw in rocker studs ? The casting numbers are either a 16 or 18 .

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Old 08-15-2021, 01:26 PM
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nytrainer nytrainer is offline
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18’s are 1968 350 HO heads and they have press in studs. Don’t know about 16’s other than I think there are small and big valve versions?

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Old 08-15-2021, 01:45 PM
rascal455ho rascal455ho is offline
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They must be 16. They have screw in studs

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