Others would know more but HT/G 253 and 308 heads had a casting number 7449033 (changed for HQ to 2812174) 307 Chev HK had 3911032 so different heads. Thats from the books I have here anyway.
Others would know more but HT/G 253 and 308 heads had a casting number 7449033 (changed for HQ to 2812174) 307 Chev HK had 3911032 so different heads. Thats from the books I have here anyway.
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