Compresion
Thread Starter
12 Second Club
iTrader: (2)
Joined: Apr 2005
Posts: 1,054
Likes: 0
From: Kansas City MO
Compresion What compression can I reach without having to run race fuel on a mostly stock bottom end? I’ve heard anywhere from 11.50-12.50, as long as its an aluminum head?
Not necessarily cuz it's an aluminum head, but because it's reverse coolant flow, meaning it cools the head first. Dynamic compression is what you need to watch out for. Run a search for Pat Kelley on the web. Dynamic needs to under 9:1 and static around 12-12.5:1.
Thread Starter
12 Second Club
iTrader: (2)
Joined: Apr 2005
Posts: 1,054
Likes: 0
From: Kansas City MO
Originally Posted by dhdenney
Not necessarily cuz it's an aluminum head, but because it's reverse coolant flow, meaning it cools the head first. Dynamic compression is what you need to watch out for. Run a search for Pat Kelley on the web. Dynamic needs to under 9:1 and static around 12-12.5:1.
Originally Posted by Grn4fbody
Dynamic Compression? Whats the differance?
Thread Starter
12 Second Club
iTrader: (2)
Joined: Apr 2005
Posts: 1,054
Likes: 0
From: Kansas City MO
Originally Posted by vanilla89
it's the amount of psi the cylinder is "actually" trapping.Bigger cam's tend to blead off cylinder psi witch means you need more static comperssion to get your'e dynamic compression where you want it
So if i go with the LS2 kit, that cam isnt that big, so 12:1 i should be safe?
TECH Enthusiast
Joined: Nov 2005
Posts: 520
Likes: 0
Originally Posted by Grn4fbody
So if i go with the LS2 kit, that cam isnt that big, so 12:1 i should be safe?
Find out when the intake closes and then use one of the online calculators Silvolite has a good one
http://www.kb-silvolite.com/calc.php?action=comp
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?
Pouria Savadkouei
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo Well download that calculator when you run a search for Pat Kelley. For the LE2, you'll have to know what the cam card says for the specs and that'll be kinda hard to digup.