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| | | Joined: May 2008 Posts: 84 Shop Shark | | Shop Shark Joined: May 2008 Posts: 84 | My 53 chevy has an original 216. im looking for another straight 6 motor and manual trasmission that i can drop in with no major modifications. will a 291 straight 6 work? thanks | | | | | Joined: Oct 2003 Posts: 5,152 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Oct 2003 Posts: 5,152 | You say 291, do you mean 292 or 261? Or have I missed it entirely?
The answer depends on what you mean by major modifications and how much more power you want.
The 292 is probably the most major of the GM sixes with the related 230 and 250 being a little less trouble but not much.
A Chevy 261 is almost a drop in swap. A GMC 270 or 302 will provide more power and is only a little more work.
1955 1st GMC Suburban | 1954 GMC 250 trailer puller project | 1954 GMC 250 Hydra-Matic | 1954 Chevy 3100 . 1947 Chevy COE | and more...
It's true. I really don't do anything but browse the Internet looking for trouble... | | | | | Joined: Aug 2007 Posts: 1,859 Grumpy old guy playing with trucks, cars, and boats | | Grumpy old guy playing with trucks, cars, and boats Joined: Aug 2007 Posts: 1,859 | What Steve Said.
However you have to define what "no major modifications" is. A 235 with a low pressure turbo would bolt in, and have more power. A 261 will bolt in. A 194/230/250/292 will require a different bell housing, starter, trans cross member and fabrication of mounts.
The problems we face today can not be addressed at the same level of intelligence we were at when we created them - Albert Einstein Or with the same level of $ - Me
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