deep dish piston


miller time

10+ Year Member

Joined
Jan 27, 2011
Messages
237
Points
1,601
City
rockfalls IL
Vehicle Year
2000 1999
Transmission
Automatic
what year did they stop putting deep dish pistons in the 4.0. i meet a guy a week ago that had a 93 4.0 and he had a 100 shot of nos. he told me that the 4.0 had deep dish piston that year and it work good for nos. i have a 99 4.0 and thinking of doing the same setup.
 
Actually the dish in the 1995 and later pistons is even bigger, because the 1995-up have smaller combustion chambers.

If you seriously wanted to "bottle feed" a 2000 4.0OHV, I'd be inclined to suggest
swapping on a set of 1993-94 cylinder heads (this would lower the compression)
 
they never stopped using the deep dish pistons, Ford just did the switch to SOHC engine and flat tops. the 95TM blocks have a deeper dish then the 93TM and older ones.
 

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