how to tell if my 70 gto is ram air iii or iv
3 Answers
Be careful. Odds are 10 to 1 it is a fake.
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GoalieScott answered 5 years ago
Look for casting numbers on the cylinder heads. RAIV is # 614, RAIII is #12 or #13. http://www.pontiacpower.net/numbers/head-codes/
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