Factory LTX Compression Height
:o
Thread Starter
Instructor
Joined: Nov 2007
Posts: 101
Likes: 0
From: Eureka California
Now I'm also looking for the deck height from crank centerline to block deck. Should be somewhere around 9". Some pistons that I ordered were "subsituted" for ones with a different compression height.
Melting Slicks
Joined: Jun 2000
Posts: 3,215
Likes: 6
From: Tampa Florida
My OEM LT4 shortblock was .0271 compression height average for the pistons to deck distance (in the hole).
I believe the blueprint specification for a SBC is 9.025, but no one really measures that though...
One assemblies the rod/piston set, installs in block and take the measurement then for decking (if need be). In other words, off the shelf pistons and rods are standard orders...the block is what gets cut for each combination.
By the way, my OEM LT4 shortblock had one piston (not included in the above average) that was .054 in the hole! Why? Bent factory rod! It is a desk paperweight now...
I believe the blueprint specification for a SBC is 9.025, but no one really measures that though...
One assemblies the rod/piston set, installs in block and take the measurement then for decking (if need be). In other words, off the shelf pistons and rods are standard orders...the block is what gets cut for each combination.
By the way, my OEM LT4 shortblock had one piston (not included in the above average) that was .054 in the hole! Why? Bent factory rod! It is a desk paperweight now...
