Flat tops with 98 crank?

[PlumCrazy]

Soo. I have an 8 bolt crank from a 98TM motor that had the lighter pistons..can I get away with running flat tops or even 90-94 pistons and still be balanced?

I know the 99-2000 cranks are actually lightened and aren't compatible with the heavier pistons, but are the 98 8 bolt cranks okay with the heavier piston?

(Plan is to run 95TM heads to get the compression up a bit)

EDIT: Did a little more digging.....scratch the flat top idea...13:1 is a bit to high for my application, I want to stay on pump gas. I am looking for 10:1 or so (90-94 pistons)

 

[JoshT]

Sounds about right. Was considering this with my rebuild, but no machine work was needed so I stuck with stock parts. According to the article in the tech library the 98 crank was same as 97 crank and 97 used the heavier pistons.

 

[PlumCrazy]

Brand new Keith Black slugs are pretty affordable, so I may just pull the trigger on those, then make up the difference in weight with lighter wrist pins.


Sent from my XT907 using CrapaTalk