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<blockquote data-quote="O4L" data-source="post: 3603710" data-attributes="member: 24429"><p>Nice. I used to buy, sell, trade, fix up, and drive a lot of the '67-'72 GM trucks but I never had one with a big block.</p><p></p><p>That 400 BB is actually a 402 that GM advertised as a 400 Big Block for some reason. It is basically a bored out 396 from what I understand. They were powered down a bit in "72 I think but the earlier versions had 350-375 HP with over 400 ft. lbs. of torque.</p><p></p><p>I don't have any experience with the propane conversion.</p><p></p><p>OOps! I didn't see swampratt's post from earlier.</p></blockquote><p></p>
[QUOTE="O4L, post: 3603710, member: 24429"] Nice. I used to buy, sell, trade, fix up, and drive a lot of the '67-'72 GM trucks but I never had one with a big block. That 400 BB is actually a 402 that GM advertised as a 400 Big Block for some reason. It is basically a bored out 396 from what I understand. They were powered down a bit in "72 I think but the earlier versions had 350-375 HP with over 400 ft. lbs. of torque. I don't have any experience with the propane conversion. OOps! I didn't see swampratt's post from earlier. [/QUOTE]
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