lq9 414
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From: Hayward CA
lq9 414 How many people running them? Pros and cons? Im really thinking of stepping it up from a 404 to a 414..since motor is gonna be out and refreshend... I know a con would be the boring part and that there would be no room for clean up if something fails..
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TECH Fanatic
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From: Hayward CA
Thread Starter
TECH Fanatic
Joined: Jun 2006
Posts: 1,326
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From: Hayward CA
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From: Hayward CA
Havent talked to my machinist yet.. I wad just thinking that idea into my head.. I know one person did a 414 but i believe out of a ls2....i think it was flaco with that single cav truck..
That truck is making some serious power. I would talk to the place you are having machine the block first and get their take on it. You might also want to hit up Tick Performance or Vengeance and see what they say.
Lots of folks have done it. Sonic the block and see how far you can punch it out. The reason you see 4.010 or 4.030 is that's a safe overbore and allows any casting flaws/shifts to be corrected. 4.040 and above are usually there for rebuilds/refreshes.
You're not necessarily going to make more horsepower. But a 4.060" bore will work better than a 4.010" with LS3 heads.
You're not necessarily going to make more horsepower. But a 4.060" bore will work better than a 4.010" with LS3 heads.
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From: Hayward CA
Yea thats what i was thinkin since im running ls3 heads .. They probably breathe a bit better.. But ill tall to my machinist see what he thinks..
Lots of folks have done it. Sonic the block and see how far you can punch it out. The reason you see 4.010 or 4.030 is that's a safe overbore and allows any casting flaws/shifts to be corrected. 4.040 and above are usually there for rebuilds/refreshes.
You're not necessarily going to make more horsepower. But a 4.060" bore will work better than a 4.010" with LS3 heads.
You're not necessarily going to make more horsepower. But a 4.060" bore will work better than a 4.010" with LS3 heads.
I have seen 4.060b & 4.125s as a one time use 427cid
a 4.00s would be safer as the piston would not be traveling as far down the bore. the iron blocks have the shortest skirts and some have issues with the pistons "rocking" in the bores when going over square. it still exists at even a 4.00 stroke but the problem is much less prevalent and actually not much of a hindrance at all.
a 4.00s would be safer as the piston would not be traveling as far down the bore. the iron blocks have the shortest skirts and some have issues with the pistons "rocking" in the bores when going over square. it still exists at even a 4.00 stroke but the problem is much less prevalent and actually not much of a hindrance at all.
