Thread: LSX oil pump gears in an L67 cover?

Originally Posted by Meemperor

Rumor has it you can use 4.3L forged rods in the 3800

in a short deck SII block your looking at custom pistons with the wrist pin intruding on the oil ring, youd likely have to run wrist pin buttons or some other means of oil ring support.

5.7" vs 5.565" (for L67 comp height pistons if i recall correctly, NA rods are .1" longer)

in a tall deck SI block you can use SII pistons (NA comp height) with rebushed 440 chrysler rods (6.760 c2c) to reach a 1.98 to 1 rod/stroke ratio, and end up with the piston ~.020 out of the hole allowing for a ~.035 quench clearance (this is of course dep on OE machining tolerances aka deck to crank centerline measure's and HG thickness)

btw...yes you can put a SI crank in a SII block...you have to run a SI flexplate though...the flexplate bolt patterns are different...

Originally Posted by Meemperor

Hmmmm ... I geuss that's why I have these Custom Ross Racing pistons ...

please tell me you got em in a dish that mirror's the chamber? the oe full dish style doesnt make use of the full quench area available...

how far outta the hole? pics of the ring/wrist pin? you grind the rods narrower? what side clearances did you hit?