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The 1970 Chevelle SS had 4 engine options, ALL big blocks. The L34 was a 350 HP 396, the L78 was a 375 HP 396, the LS5 was a 360 HP 454 and the LS6 was a 450 HP 454. Note, these are the factory horsepower ratings. Also note in 1970 the 396 was bored out to 402 CID, but was still called a 396 for marketing reasons. The L34 was the base model engine, the other three engines were all optional for super sport models.

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Q: What engine came in 1970 Chevelle SS?
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