Not the first time....
|January 25 2002, 8:17 PM |
this has been on ebay. I suppose some one will buy it eventually. A fool and his money....
Can you bore a 390 block 0.30" over?
|January 25 2002, 8:35 PM |
What is the max you can go?
Mine is .060 over and running fine.
|January 25 2002, 8:36 PM |
What then is you cu.in. displacement?
|January 26 2002, 2:06 AM |
What compression ratio, etc.? How much HP are you getting? Any info is appreciated. Thank you
|January 26 2002, 3:29 AM |
I think a .060 390 is about 400 cubes.
.060 over brings a 390 out to roughly 402 cubic inches.
|January 26 2002, 8:12 AM |
Hey Barry! How about we split the difference?
|January 27 2002, 12:02 PM |
The formula for cubic inches is Bore x bore x .785 x stroke x 8(no. of cyl.s) so a .060 over 390 would come out to be 398 cubic inches. Am I right or wrong??
There are many variables to take into account such as
|January 26 2002, 7:25 AM |
which year and block...passenger car C6ME, mirror image 105 block, heavy duty 391FT block, etc...but there seems to be no real 100% fool proof method with out sonic checking the block. We had a C6me passenger car 390 block that would have only of had .095 wall left on the thrust side of a cylinder wall after a .030 bore because of bad core shift and this is a standard bore block. I currently am running a .080 over 105 block which comes out to 406cid. There are several past posts to this general question on over bore.
From what I found that block might be a ...
|January 25 2002, 11:01 PM |
427 the code he shows that is on the timing cover traces back to a 427 block but there could be a totally diferent number on the block than the one on the timing cover. Anyway. Oh one more question what would you all say a motor like this is worth with tranny?
I am going to give him the benefit of a doubt...
|January 26 2002, 3:29 PM |
and figure he meant to write 428 but due to a brain fart put in 390. But since I am not going to bid on it it doesn't matter. I would at least contact him first to see if that's what happened. My 2 cents anyway.