400-440 PISTON DIFFERENCES???
#880327
12/14/10 11:42 PM
12/14/10 11:42 PM
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Joined: Aug 2007
Posts: 475 HEMPSTEAD TX
CUUDAK
OP
mopar
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OP
mopar
Joined: Aug 2007
Posts: 475
HEMPSTEAD TX
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I have a question concerning the differences between a piston from a 400 B engine and a 440 BR engine..
I have been doin a bit of research and have noticed that the 400 piston at 4.34 is a bit larger than the 440 piston at 4.32.
My question, Is the pin location in the same spot between the two??
Do they make a .080 oversized for the 440?
I cannot believe that I can't find a .060 oversized forged piston for a 400 with the stock pin location and 9:1 compression that doesn't cost $800.00!!!
Trying to do a "Budget" build 400 with a 80mm B/W S480 turbo. First engine is a test to see what it will be able to endure..
HEEELP!!
SRT8 CHARGER "Four door bore" <img src="/ubbthreads/images/graemlins/smile.gif" alt="" />
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Re: 400-440 PISTON DIFFERENCES???
[Re: CUUDAK]
#880329
12/15/10 12:10 AM
12/15/10 12:10 AM
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Joined: Jan 2003
Posts: 75,020 U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,020
U.S.S.A.
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Quote:
I cannot believe that I can't find a .060 oversized forged piston for a 400 with the stock pin location and 9:1 compression that doesn't cost $800.00!!!
HEEELP!!
That's because such a piston does not exist , especially in a forged unit, stock pin location on a 400 is more like 7.5/8.1 if you are lucky.
Contact member Performance Only , he's a WD for diamond , they'll MAKE you the piston you need .
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Re: 400-440 PISTON DIFFERENCES???
[Re: CUUDAK]
#880336
12/15/10 03:48 PM
12/15/10 03:48 PM
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Joined: Jan 2004
Posts: 27,347 Today? Who Knows?
1_WILD_RT
Management Trainee
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Management Trainee
Joined: Jan 2004
Posts: 27,347
Today? Who Knows?
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Quote:
Its at the machine shop now. I am sure he will do what is required.
Did you tell him to sonic check it? Cause if your gonna assume he'll check it.......................
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Re: 400-440 PISTON DIFFERENCES???
[Re: 1_WILD_RT]
#880337
12/15/10 04:00 PM
12/15/10 04:00 PM
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Joined: Jan 2003
Posts: 75,020 U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,020
U.S.S.A.
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Quote:
Quote:
Its at the machine shop now. I am sure he will do what is required.
Did you tell him to sonic check it? Cause if your gonna assume he'll check it.......................
Does this engine NEED to go out to .060 ?
There is no such thing as an .080 over 440 piston because the walls will be paper thin in spots at that overbore.
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