260 to 350 olds engine swap
Ok so I have a 260 in my 79 cutlass, looking to drop a olds 350 in but need to know what tranny and rear end will work. Is the stock ones going to hold?or should i replace the gears in the rear differential? Any help would be awsome thanks!
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The '79-'80 Hurst/Olds came with Olds 350s in them. I have a 1980 cutlass calais that had the 260 w/250 metric trans. I installed a 455 with a 350 trans. Just a bolt in. Headers are not cheap. Use the exhaust manifolds that came with the 350 and have a muffler shop run duals with an H pipe. Get a bigger radiator. That 260 radiator wont cool that 350.
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