this is true, but keep in mind the cons (including price!) are going to outweigh the pro's with this type of setup. This money would be better spent bumping compression, increasing the flow of the heads, working on the valvetrain, transmission, suspension etc. Stroker kits are already one of the least cost effective ways to increase performance, at least on a new car. Doing all the r & d yourself, or even doing what you suggest would cost a rediculous amount for what you are gaining.

 

true, but he was asking about a stroker kit. Offset grinding ofrod journals would be expensive, as would buying rods and pistons. It wouldn't be how I would increase performance, but he did ask about increasing displacement.

 

www.supersixmotorsports.com offers a4.3l stroked 4.0 SOHC. They were using 351/W forged H-Beams and dome pistons to get the compression down from 9.7:1 to 9.0:1 for F/I. I beleive they were using a crank out of a 4.5L or maybe 4.2Ltruck engine. Apparently our 4.0's come factory with flat top pistons which had "chipped" with SC running as low as 8 psi.They broke down the 4.0 SOHC with pictures showing the good and bad qualities. The bad were things like the unusually large holes in the head and block for coolant flow. The factory .030" head gasket was prone to fail. Some of the good qualities were the large amount of space in the block for stroker kits, 68cc combustion chambers, large fairly straight exhaust/intake runners,and room for larger valves. They claim this combination w/ F/I should be good for 500 hp. Im not sure if that was rwhp but i seriously doubt it. Anyhow I Thought they had a very imformative page you should check out.

 

if SSM offers a stroker kit, thats news to everyone, including SSM

they do make one for the 3.8, but not for the 4.0

 

my bad that was 3.8 I was reading wrong. But they do have a page breaking down the 4.0L SOHC that tells about the engine and its strong and weak points. I think that is very interesting but your right the stroker kit is the 3.8L