What is Your Compression Ratio?
Thread Starter
Melting Slicks
Joined: Jun 2000
Posts: 3,215
Likes: 6
From: Tampa Florida
What is Your Compression Ratio?
Soon I will be reinstalling my LT4 cylinder heads and figured I would take a pole of various compression ratios folks are running on the street (pump gas).
I know the stock LT4 ratio is 10.8 so this is geared toward the modified LT1/4 type engines...
I'm looking at 11.3 to 1 when complete.
:)
I know the stock LT4 ratio is 10.8 so this is geared toward the modified LT1/4 type engines...
I'm looking at 11.3 to 1 when complete.
:)
Burning Brakes
Joined: Oct 2002
Posts: 1,152
Likes: 1
From: Wichita KS
Re: What is Your Compression Ratio? (No Go)
Mine is 11.54, I actually calculated all of the crevice volume's Etc...
No problems at all, and I haven't seen any odd/high knock counts on my Datamaster scans...I've only used 92-93 octane in it though.
I also kept my quench area to a minimum, which help's eliminate detonation.
I'd need to double check my notes but .018 deck height + .029 head gasket, so I ended up with .047 quench height...
No problems at all, and I haven't seen any odd/high knock counts on my Datamaster scans...I've only used 92-93 octane in it though.
I also kept my quench area to a minimum, which help's eliminate detonation.
I'd need to double check my notes but .018 deck height + .029 head gasket, so I ended up with .047 quench height...
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Thread Starter
Melting Slicks
Joined: Jun 2000
Posts: 3,215
Likes: 6
From: Tampa Florida
Re: What is Your Compression Ratio? (Monks)
Thanks folks!
To think 10-15 years ago...anything over 10 to 1 would have been race gas territory with iron heads and carbs, etc!
I may even try for something closer to 12 to 1 when the new shortblock is assembled...will have to see how this cr works on the roadcourse, etc first though...
Awesome!
:)
To think 10-15 years ago...anything over 10 to 1 would have been race gas territory with iron heads and carbs, etc!
I may even try for something closer to 12 to 1 when the new shortblock is assembled...will have to see how this cr works on the roadcourse, etc first though...
Awesome!
:)
Drifting
Joined: May 2001
Posts: 1,392
Likes: 0
From: Wabash,IN
CI 7-8-9-10 Veteran
St. Jude Donor '08
Re: What is Your Compression Ratio? (superlund)
I wish i knew what my comp. ratio was LOL guy built my motor never told me then when i aske he didnt know LOL :crazy: :_dupe:
