LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Compression question

Thread Tools
 
Search this Thread
 
Old Dec 17, 2006 | 10:19 AM
  #1  
97LT1's Avatar
Thread Starter
TECH Fanatic
20 Year Member
iTrader: (3)
 
Joined: Sep 2004
Posts: 1,417
Likes: 0
From: Clear lake TX (From LaPorte)
Default Compression question

Ok I just talked to lloyd elliot about my 383, and he said use a flat top piston with a -4 or -5 cc valve notches if going N/A. This
will put you in the 11.8-12.1 CR range with a .035 quench using his LE3 package.

What is the safest compression for 93 octane? Do you think I will be ok at that compression level?
Reply
Old Dec 17, 2006 | 10:26 AM
  #2  
Tony Shepherd's Avatar
8 Second Club
iTrader: (4)
 
Joined: Oct 2002
Posts: 2,913
Likes: 2
From: Round Rock TX
Default

Originally Posted by 97LT1
Ok I just talked to lloyd elliot about my 383, and he said use a flat top piston with a -4 or -5 cc valve notches if going N/A. This
will put you in the 11.8-12.1 CR range with a .035 quench using his LE3 package.

What is the safest compression for 93 octane? Do you think I will be ok at that compression level?

You will be fine. Monitor detonation when tuning it and set the timing at the best power with safe air/fuel and zero detonation.

I ran pump gas 93 octane on my last engine with 12.5:1 compression.
Reply
Old Dec 17, 2006 | 10:58 AM
  #3  
KWIK WS6's Avatar
On The Tree
iTrader: (4)
 
Joined: Jun 2003
Posts: 193
Likes: 0
From: so.cal
Default

Originally Posted by Tony Shepherd
You will be fine. Monitor detonation when tuning it and set the timing at the best power with safe air/fuel and zero detonation.

I ran pump gas 93 octane on my last engine with 12.5:1 compression.
Reply
Old Dec 17, 2006 | 11:30 AM
  #4  
97LT1's Avatar
Thread Starter
TECH Fanatic
20 Year Member
iTrader: (3)
 
Joined: Sep 2004
Posts: 1,417
Likes: 0
From: Clear lake TX (From LaPorte)
Default

Cool I was a little worried, as the stock compression is thought as high. I am feeling better now.
Reply




All times are GMT -5. The time now is 06:21 PM.