Max stroke in a Resleeved block?
Thread Starter
Joined: Aug 2005
Posts: 2,649
Likes: 1
From: Mont Belvieu, TX
Max stroke in a Resleeved block? Like it says, what is the max stroke I can basically just bolt in? the block was already running a 4 inch crank and I was wondering if I could go to a 4.1 or a 4.125 without spending a ton of money on specialty parts. I already have the pistons and if I have to change them out it is not worth the effort. block an pistons is all that I have right now. Thanks for the feedback guys.
with a 4.125 v/s 4.0 stroke your pistons will come out of the block if they are made for a 4.oo stroke crank.the block will need grinding in some places with a 4.125 stroke,so i've heard.
Yep, if you already have pistons for a 4" stroke, you can not use a 4.125" crank with them. Pistons are ordered to specifically fit the crank. The pin has to be placed in the correct spot, so swapping strokes is a no no.
As for the grinding of the block, I'm sure your sleeves are stock legnth. The ring gaps have to be altered because the spacing for a 4" stroke would actually pull the lower ring close to, or out of the bottom of the bore with a 4.125" stroke. Extra clearencing will also be neccasary to clear rod bolts and such if you decide to go with something longer.
As for the grinding of the block, I'm sure your sleeves are stock legnth. The ring gaps have to be altered because the spacing for a 4" stroke would actually pull the lower ring close to, or out of the bottom of the bore with a 4.125" stroke. Extra clearencing will also be neccasary to clear rod bolts and such if you decide to go with something longer.
