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#61
11-15-2019, 10:54 AM
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In general stroke gets you torque you can buy longer stroke crankshafts that will fit your 389 adjust piston dish as required for any given head and you dont need any whiz bang heads for cruising torque
You can meet your goal without alot of new parts that do not go hand in hand with a normal stock rebuild You could fret dish piston cost but your not buying a whole other 455 engine either You could fret the cost of the new crank to fit your 389 but your not buying a 455 crank then having it machined All this is depends on your 389 not already being bored out max .
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A man who falls for everything stands for nothing. Last edited by Formulas; 11-15-2019 at 10:59 AM. |
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#62
11-16-2019, 05:58 PM
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I would not bore a 66 389. As in "at all". They cracked with std bores.
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#63
11-16-2019, 09:40 PM
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Quote:
My 65 block (9778789) has been bored to 4.120 from 4.0625. Runs killer. No cracks. No problems. I have pounded this motor for a few thousand miles now and it is fine. These older blocks are pretty meaty. I would also consider stroking it to 461 as well. |
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