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post #1 of 5 Old 10-09-2007, 10:59 AM Thread Starter
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305 swap?

I currently have a amc 258 bored 30 over with an rv cam and high out put oil pump in my 86 cj.
I was wondering if anyone has done or knows anything about a 305 swap.
and if it would be worth doing with the engine I have now.

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post #2 of 5 Old 10-10-2007, 10:07 AM
Happy Joe
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The 305 is an old general motors small block V-8.
Do you mean the AMC 304 V-8?

'06 TJ Rubicon; seemed like a good idea at the time; had many CJs...
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post #3 of 5 Old 10-10-2007, 10:12 AM
wil badger
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and if you are talking about a GM 305 why waste the energy on a turd of a motor.go with the 350 ,same size block with more cubes and power

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post #4 of 5 Old 10-12-2007, 07:06 PM
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no he has the cj with a I6 but he has a gm 305 that he could put in.

either way get that sob running!
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post #5 of 5 Old 10-19-2007, 01:00 AM
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Unless you have a 305 already there, you would be better off going with a 350. Its the same size block but more power, cheaper, and easier to find. I just did this about 6 months ago, except I yanked out a 304 for the 350. You will need new motor mounts, either bolt in or weld in. A transmission adapter depending upon what tranny you have. Possibly a new radiator. I used a 350 swap kits that included a new radiator and motor mounts from 4x4 parts i believe. Since I also swapped in the Chevy tranny and T-Case I didn't need an adapter. Everything else is pretty straightforward, as long as the new motor comes with all the brackets and such.

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