Technical & General Discussion Area > Tech Torque Pre 1973

1965 260V8

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fredm666:

--- Quote from: GEOFF289 on December 20, 2023, 08:18:21 am ---Early 289's were 5 bolt too.

--- End quote ---

I have a ‘64 289 D-code and it’s 5 bolts

fredm666:

--- Quote from: Reborn67 on December 18, 2023, 09:23:00 pm ---Hey Gents, question for the mechanics,
Apart from the puritans, has anyone rebuilt a 260V8, is it worth it or is it easier to upgrade to a 289 or 302

--- End quote ---

I would go to a good mechanic and ask to open the engine and check if it has been rebuilt before. If not, I would investigate a rebuilt + stroke( costs, if doable, etc).

GEOFF289:
Really the only difference between a 260 and an early 5 bolt 289 is the bore so if the bore hasn't already been opened up you'll end up with a 289 anyway and if it has you probably already have one.

Reborn67:
Even if you bored it out 0.040” it is only 266ci,
They can’t be bored safely any more than that,
It appears custom size pistons etc for these are rare and pricey, the more research l do the less practical it becomes..,

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