C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

Compression ratio with Mongoose heads

Thread Tools
 
Search this Thread
 
Old Dec 7, 2005 | 03:48 PM
  #1  
427 ls1 C5's Avatar
427 ls1 C5
Thread Starter
Intermediate
 
Joined: Dec 2003
Posts: 42
Likes: 0
From: Chicago IL
Default Compression ratio with Mongoose heads

Does anyone know what the static compression ratio for my motor would be with Diamond flat top piston (4.125 bore) and AFR 225cc Mongoose heads with 66cc combustion chambers. I've e-mailed AFR but haven't heard back. I'm changing from Patriot heads and any advice on the AFR's would be helpful. Thanks.
Reply
Old Dec 7, 2005 | 04:42 PM
  #2  
vettenuts's Avatar
vettenuts
Team Owner
25 Year Member
Conversation Starter
All Eyes On Me
Photogenic
 
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
Default

I would contact Tony Mamo directly. He is very knowledgable and gets back to you very quickly. He has answered all the questions I have asked on AFR heads. He also is on the LS1tech.com forum as well.
Reply
Old Dec 7, 2005 | 05:03 PM
  #3  
427 ls1 C5's Avatar
427 ls1 C5
Thread Starter
Intermediate
 
Joined: Dec 2003
Posts: 42
Likes: 0
From: Chicago IL
Default

Thanks for the tip.
Reply
Old Dec 7, 2005 | 05:10 PM
  #4  
mdhmi's Avatar
mdhmi
Team Owner
 
Joined: Jul 2003
Posts: 20,474
Likes: 2
From: Detroit
Default

http://www.angelfire.com/fl/procrastination/motor.html

That might help.

Mark
Reply
Old Dec 7, 2005 | 06:35 PM
  #5  
kumar75150's Avatar
kumar75150
Le Mans Master
15 Year Member
 
Joined: Jul 2002
Posts: 6,147
Likes: 32
From: Dallas TX
Default

If its a flat top piston, you should be around 12.25:1 assuming a .054 head gasket with zero deck height.

THats way too much compression to run on pump gas unless u are running a gigantic cam and even then, I doubt it.
Reply
Old Dec 7, 2005 | 09:15 PM
  #6  
WALLstAL's Avatar
WALLstAL
Race Director
15 Year Member
 
Joined: Aug 1999
Posts: 15,466
Likes: 0
From: GARDENA Ca, State Of Konfusion
St. Jude Donor '05
Default

http://www.c5frc.com/calculators/Com...Calculator.htm
Reply
Old Dec 8, 2005 | 03:53 AM
  #7  
John Shiels's Avatar
John Shiels
Team Owner
20 Year Member
 
Joined: Jul 1999
Posts: 50,808
Likes: 10
From: Buy USA products! Check the label! Employ Americans
Default

both things
Reply

Get notified of new replies

To Compression ratio with Mongoose heads





All times are GMT -4. The time now is 03:31 AM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE