mikedevore
Well-Known Member
What kind of numbers would support a .070 over 360 block?
9:0 compression, spun to 6500rpm
9:0 compression, spun to 6500rpm
SONIC TESTING
- Thread starter mikedevore
- Start date
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dano
Evil Handy Man
Stock 3.58" stroke?
Where did you get .070 360 pistons?
.030 340 pistons for a 4" arm. Even the moron I am figured that out. .....but mainly because I built a 416 back about 95. lol
To the question. I don't like seeing under .200" on either of the thrust sides. Opinions vary.
What connecting rid makes it all line up?
I could do the math but I’m supposed to be busy. It would have to be about .200 or so shorter.
I would be skeptical that a 070 360 would be that thick or thicker.
Not even a very early (34xxxxx or 36xxxxx) Block.
Not even a very early (34xxxxx or 36xxxxx) Block.
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6.123 of your choosing.
Hmmm. Now I have some math to do tonight
Let Summit do it for you. This is what I had in mine.
DODGE KB KB356.070 KB Performance Pistons | Summit Racing
Free Shipping - KB Performance Pistons with qualifying orders of $109. Shop Pistons at Summit Racing.
MOPAROFFICIAL
If it has tits, it's a liabilititty.
under .125 is a poor candidate
mikedevore
Well-Known Member
CP, stock eliminator pistons, we are allowed to bore .070 over.
The engine I currently have is .070
mikedevore
Well-Known Member
Yes
MOPAROFFICIAL
If it has tits, it's a liabilititty.
I think people confuse Big Blocks in small blocks a lot when it comes to cylinder wall thickness. Big Blocks are pretty thick compared to a small block that is. You can see over .180 on a 440 for instance.
As for a small block.. they're not that thick, though some may be thicker than others of course..but this should give you a really good indicator and this is why I put the answer I did.. I've seen the testing in person myself and I've sleeved blocks n my time as a machinist which is essentially boring it out n hammering a cold sleeve into the baked/heated block. the sleeves we used and could get are .125 thick...hence my answer.
I lost a cylinder wall in my last 410 engine and I have a piece of it around here somewhere and I will tell you right now it is not .200 thick.. its somewhere just over .140 or so.
I will find it and measure it. Even then it does not represent every 360 block out there of course and it is of 1978 vintage.
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We run Stock Eliminator with Small Block
Mopars. (Just won both our classes @
Bakersfield last week).
You folks WILL think I am nuts...
I bore the blocks only what is required
to finish them. I lose more HP from ring
seal losses than I ever gain from a few
Cubic Inches with the larger bore. Especially
if the blocks do not sonic particularly well and
with our proprietary ring combo.
However, with the big fat rings most of the street
guys run = It would probably not be near as critical.
MY .02 = For Free!
Mopars. (Just won both our classes @
Bakersfield last week).
You folks WILL think I am nuts...
I bore the blocks only what is required
to finish them. I lose more HP from ring
seal losses than I ever gain from a few
Cubic Inches with the larger bore. Especially
if the blocks do not sonic particularly well and
with our proprietary ring combo.
However, with the big fat rings most of the street
guys run = It would probably not be near as critical.
MY .02 = For Free!
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