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#1
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# 48 heads
i bought a 1970 ram air engine that had been removed from a 24k mile 70 t/a years ago due to a spun rod bearing . It had a set of #48 heads that were both date coded H-20-8. My question is would these be very late 68 heads or very early 69 heads? I thought yearly change over was either August or Sept.
https://www.dropbox.com/scl/fi/hcwwg...fappqnmq0&dl=0 https://www.dropbox.com/scl/fi/d63l3...7hmyhxc12&dl=0 |
#2
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#48 heads were used on 1969 engines, no exceptions.
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#3
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That is what i thought. So these are a early production head?
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#4
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Seems like Pontiac cast a lot of 48 heads in August of 68. They were used on 69 Firebirds and GTO's built that fall and likely into early 69 with 400HO or RAIII 4 speeds.
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