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counterweight diameter

Started by Nacho-RT74, July 24, 2011, 11:31:11 PM

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Nacho-RT74

July 24, 2011, 11:31:11 PM
whats the counterweight diameter on a 440 stock crank ?
Venezuelan RT 74 400 4bbl, 727, 8.75 3.23 open. Now stroked with 440 crank and 3.55 SG. Here is the History and how is actually: http://www.dodgecharger.com/forum/index.php/topic,7603.0/all.html
http://www.dodgecharger.com/forum/index.php/topic,25060.0.html

Budnicks

#1
July 25, 2011, 03:56:26 PM
I think the 440 3.75" stroke crankshaft counter weights are 7.48" in diameter (according to 440source), if you plan on using 1 in a 383-400 B-block the diameter needs to be trimmed down to 7.12", to clear everything with out block modifications...
"fill your library before you fill your garage"   Budnicks

Nacho-RT74

#2
July 25, 2011, 07:54:43 PM
well actually eberybody says cut it to 7.25
Venezuelan RT 74 400 4bbl, 727, 8.75 3.23 open. Now stroked with 440 crank and 3.55 SG. Here is the History and how is actually: http://www.dodgecharger.com/forum/index.php/topic,7603.0/all.html
http://www.dodgecharger.com/forum/index.php/topic,25060.0.html

Budnicks

#3
July 26, 2011, 03:42:01 PM
I have built a bunch of the 383 & 400 B-engine strokers in many configurations & strokes from 3.75"-3.95"-4.15"-4.25" It really depends on you block & if there is any core shift the 7.120" diameter take any core shift out of the equation completly... & yes you can get away with 7.250" diameter sometimes :Twocents:
"fill your library before you fill your garage"   Budnicks
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