Bergy,, I have a question. I’ve always heard that 2 freeze plug, 2 bolt main 400 small blocks were better/stronger/heavier castings than the 3 freeze plug 2 and 4 bolt main versions. So I built my 406 with the two freeze plug casting. Can you shed any light on this? I’d appreciate hearing your feedback.
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Andy
1967 Camaro 406 4 speed
1969 C/10 383 5 speed
1969 D300 318 4 speed
1969 Super Bee 383 4 speed
1972 K/5 350 Turbo 350
1972 Duster 340 727
1974 'Cuda 340 4 speed
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