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Boring Cylinders

Kolton Lock

Kolton Lock

New member
lol sounds like they are boring...

but i mean to bore a cylinder in this car, would it be possible to make it big enough that you go from a displacement of 3.8L to 4.5L?
 


i dont think you can do that big of a displacement change.
however, i do see people bore out their old grand national blocks (3.8) to a 4.1L. i dont see too many amazing results from that though.
 
to a 4.5L? How any why did you come up with that number?

On stock stroke, no way. The biggest would be with a stroker kit, and bored over, getting you to 4.2L. It'd be awesome, but expensive as hell.
 
The stock bottom end is fine and boring out the cylinders does not give enough of a performance increase to justify the cost. /end thread
 
hmmm. it makes me curious because i had 4.5L written on both my cylinder head covers... i havent taken them off yet to see due to other car problems and me being busy.
 




Thatd be some huge a$$ pistons and some long a$$ rods. Id guess the engine would make it about 1320 ft... maybe lol. Nahh the cylinders wouldnt have enough material between them and your pistons would have to be very shallow. Id bet it was just the oil number or if it was swapped it could have been swapped in april of 05 lol
 
It wouldn't have been swapping date, cause it was swapped in 07.

I'm assuming he was just an idiot and thought liters were quarts
 
oh my... a .7l jump is quite impossible on this block lol, or i think most blocks... for that amount of money, why not just upgrade the crap out of everything else to get power??
 


^ You can bore a SBC 350 .060 over and put in a 400 crank and have a 414CI engine. 350=5.7L 414=6.8L So you grab 1.1 liters right there. And that's only a small block, some even push the bore .080 over, but then the cyl walls are too thin to handle as much power.
 
machinegunsquid said:
^ You can bore a SBC 350 .060 over and put in a 400 crank and have a 414CI engine. 350=5.7L 414=6.8L So you grab 1.1 liters right there. And that's only a small block, some even push the bore .080 over, but then the cyl walls are too thin to handle as much power.
Click to expand...
that sounds very expensive lol
 
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