That is a big cam :O solid lifter? flat or roller?Called BRC on the pistons
1.786 compression distance
bore is 4.10
stroke is stock 390 3.78
plus .060' over makes it "pretty big" ?That is a big cam :O solid lifter? flat or roller?
The 390 had a stock bore of 4.052, so it looks like your block has been bored pretty big.
How did the block turn out? was it damaged at all?
What are your plans for it? street it? or race it again?
you tell me how much the block Had to be bored to correct wear .Tell me how many/much more overbore he can expect before he has to sleeve at least a couple cyls.
.060 over is about the max safe overbore for most 390's. OP says all it needs is a hone this timeyou tell me how much the block Had to be bored to correct wear .
what if it needed .060' over ?
tell what you would have done with the block . srap it ? srap it so you could get one or two more borings out of another block ?
when you learn about building (not bolting parts togther) engines and parts you'll know ..060 over is about the max safe overbore for most 390's. OP says all it needs is a hone this time
It's been bored out to about the max and that to me is a big. W/O sleeves, tell me how to get around that to correct wear.
if it needs more, and will be run hard... its up to the owner and the sonic test to see if it will hold up. more likely than not there will be thin spots. 390 blocks are cheap, cheaper than chewing up the rest of the motor over. and cheaper than 8 sleeves.
OP told us the information.when you learn about building (not bolting parts togther) engines and parts you'll know .
I don't know the history or the build specs of the 390 .
How Do you know what they are ?
make the comment ..OP told us the information.
Do explain what I need to know about building before making an arrogant comment
thats the comment !
no I don't no it all . I do know way , way more that you .
do know that you make like you know ..
when the detail info is required , its given