393 Question
393 Question well i've been lookin at getting the 393 stroker kit. but the problem is is that the lowest i can get my compression down to is 10.7:10. and im boosting so i need my compression around 9.5:1 at most. so my question is can i use the 4.10 crank and a shorter rod. change the wrist pin height and then use a dished piston to get the desired compression? thanks for the input.
- Scottie
- Scottie
I wouldn't boost the 4.100" crank unless you plan on rebuilding often. That crank in a stock block would be ok N/A, assuming the proper builder, but throwing boost on it would be asking for it. Just build the 4" 383 and add 2 more lbs. of boost. It'll give you better ring spacing and you won't be near as prone to having a oil problem. In any case, you can order the pistons in whatever cc you want to get the compression down. You'll probably need to talk with the vendor about the pistons.
mainly want the 393 based on what i've seen and i dont want the same motor boost combo everybody else has. i talked to je pistons and they said that with the wrist pin height where it is that i cant get a dished piston. im running 70 cc heads
Again, with the pin being so high and the rings being crammed together, it's just another reason not to boost the motor. If you go with the 383, the rings will be spaced normally and you will have a wider choice of piston dishes.
