440 to 426

[440ex2001]

Ok, turns out that that the shop screwed up my sleeve bored it to big so Im selling my 440 piston since its to small for my sleeve now:mad: I have an extra cylinder and a brand new 87mm wiseco sleeve. Is this the same sleeve used for the 426 or is it 416? Any way I want to get a JE 426 piston 11:1 Becasue I have heard that wiseco pistons are lower than advertised compression. My questions are is the 87mm sleeve the correct sleeve for a 426 and can I used a JE piston with a wiseco sleeve? Thanks

[mojoe2878]

the 87mm sleeve will take the 426. if you put another 89mm one in there you can go with the 426 and then later have it bored to 440 if you want.

[tdd6405]

no, 87mm is .80 over. also equal to 416cc.

the 426 is a cylinder thats bored 100 over

[450ex]

87mm is 416

88mm is 426

426 is .080" over

[mojoe2878]

my mistake. he's right the 87mm is the 416 bore. had it mixed up.
im gonna go pull my head out my a** right fast:D

[cals400ex]

85mm = stock
86mm = +1mm = .040 over
87mm = +2mm = .080 over
88mm = +3mm = .120 over

[tdd6405]

okay that sounds right. i wasnt sure about the 426, but i know 416 is 80 over and 87mm.