fst100

iTrader: (5)

went on a few online compression ratio calculators a few months ago and i thought i had a good idea on where i was at compression ratio wise because a few members on here had made a compression ratio spreadsheet. thought i had 11.4:1 but now im not so sure and think im more around 10.8:1
so heres my setup:
lq4 with 232/238 @0.050
milled 243 heads 0.030" (~61cc?)
using cometic MLS 0.040" with 4.100" gasket bore size

i think thats it. plugged those numbers on click here using -6cc for dished pistons

.boB

iTrader: (1)

What is your deck height?

Russ K

iTrader: (1)

If your deck height is 0, your at 10.8 CR with a 61 cc head. But removing .030 should be 60cc, so that you give you 10.99 CR at 0 deck height. Now LS pistons are usually above deck, so a -.004 deck height would be 11.1 CR.

Russ Kemp

fst100

iTrader: (5)

havent checked yet, my buddy's going to be doing the build i can ask him when he starts it though. what's the average for the lq4?