compression ratio?
Thread Starter
On The Tree
Joined: Dec 2011
Posts: 143
Likes: 0
From: Gold Coast, Australia
compression ratio? I have an Ls1 with 241 heads shaved 30 thou and 0.45 head gaskets. Quenched 35 thou fitted. Bowls on heads blended. 3 angle grind job on valve seats, standard size valves. same spec cam as used in trickflows 500hp top end kit. 220/224, 278/282/ 0.575/0.575 lift on 112 lsa. If Stock compression is say 10.1:1 , any ideals what compression I am running?
TECH Addict
Joined: Sep 2009
Posts: 2,481
Likes: 5
From: PA/MD
Wallaceracingcalculators is a great site where you can punch in all your numbers and get right on for your compression....I'll guess right around 10.5-10.7:1 scr, but would need the actual cc of your head chambers....I can't remember the formula right off hand for how much cc from milling you loose.
After milling my 241's a few times I ended up taking them down to 57cc's the last time.....did a bunch of grinding in them to really open them up and make them flow....is have to dig for my pics, but would love to see pics of yours!
After milling my 241's a few times I ended up taking them down to 57cc's the last time.....did a bunch of grinding in them to really open them up and make them flow....is have to dig for my pics, but would love to see pics of yours!
TECH Resident
Joined: Sep 2009
Posts: 859
Likes: 2
From: Frozen Tundra, WI
I think the links in this thread may be what you are looking for...
https://ls1tech.com/forums/generatio...ssion-lq9.html
https://ls1tech.com/forums/generatio...ssion-lq9.html
