Richie
Well-Known Member
Hi guys I was wondering what the last over size pistons were that you could get for a 340. Is it 60 over? Will it still run cool with that much gone or is that hardly anything? I'm not to bright about these things :read2:
What's the last piston over size...
- Thread starter Richie
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GTXperience
Orig Stealth Mod
As 70 said, you can only go as large as your specific block will handle (due to things like core shift). Have it sonic checked and go from there.
limelite70
Well-Known Member
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Fyi-- The More You Bore It.
The Thinner The Walls.
The Hotter Its Going To Run.
Depending On Were You Live ??
You Might Not Want To Drive It On 100 Degree Days.
The Thinner The Walls.
The Hotter Its Going To Run.
Depending On Were You Live ??
You Might Not Want To Drive It On 100 Degree Days.
C130 Chief
Mechanical Genius
The factory recommended .040 max on production blocks. Yes, you can possibly run more with a sonic check, and probablyb more on the beefier race blocks. Running hotter isnt as much of an issue as bore flex and ring sealing. As the bores get thinner they flex and you lose power (far more power than the little added displacement might have gained you).
If you have a single damaged bore, sleeve it. If the block is already at .040 look for another one.
If you have a single damaged bore, sleeve it. If the block is already at .040 look for another one.
69383gts4spd
69 383 4 speed dart
why bore it any more than you absolutely have too. Leave as much in those cylinders as you can, uless you have a good supply of blocks a cheap good machinist. Just my 2 cents.
fishy68
Tyr Fryr's Inc.
I totally agree. You should never bore an engine more than it needs and if it need anything over .040 have it sonic tested to make sure it can handle it.
Richie
Well-Known Member
Thanks guys. That pretty much answers it.
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