AutoTec, Big Block Ford BOSS 429, Dome, 4.390 Bore 3.590 Stroke 1.870 Comp HT

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AutoTec, Big Block Ford BOSS 429, Dome, 4.390 Bore 3.850 Stroke 1.740 Comp HT

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AutoTec, Big Block Ford BOSS 429, Flat Top, one valve relief, 4.390 Bore 4.300 Stroke 1.320 Comp HT

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AutoTec, Big Block Ford BOSS 429, Flat Top, one valve relief, 4.390 Bore 4.500 Stroke 1.320 Comp HT

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