TPI Tuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
Sponsored by:
Sponsored by:

L98...How much, is TOO much, compression??

Thread Tools
 
Search this Thread
 
Old Jan 22, 2007 | 08:59 PM
  #1  
rel3rd's Avatar
Thread Starter
Member
iTrader: (1)
 
Joined: Jul 2006
Posts: 194
Likes: 0
From: Baltimore, MD.
Car: 1967 Camaro
Engine: 327
Transmission: Turbo 350
Axle/Gears: 308's
L98...How much, is TOO much, compression??

In a N/A DAILY DRIVER STREET CAR???

Going from a 76cc chambered iron head, to a 62cc aluminum head...
If my math is correct with the combustion chambers & head gaskets I plan to use, I'll have 10.62:1. Obviously, 93 octane premium unleaded will be the gas that I use, I just don't want to deal with detonation on a high12/low13 second naturally aspirated car.

Should I be OK?
Am I worrying for nothing?

Reply
Old Jan 22, 2007 | 09:15 PM
  #2  
1989GTATransAm's Avatar
Supreme Member
iTrader: (3)
 
Joined: Sep 2003
Posts: 6,859
Likes: 14
From: Cypress, California
Car: 1989 GTA
Engine: 369 TPI
Transmission: 4L60E
Axle/Gears: 3.70 Nine Bolt
The key is what your dynamic compression ratio will be. You would need to calculate that. I'm running just fine with my 10.75:1 motor and 91 octane. My DCR is 8.5:1 and my quench is .035".
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
FormulasOnly
TPI
95
Jul 23, 2018 08:47 AM
69GTOby
Tech / General Engine
40
Apr 18, 2016 02:34 PM
Nervous2
Firebirds for Sale
2
Oct 8, 2015 10:53 PM
Jonas Earl
Engine Swap
8
Sep 27, 2015 07:39 AM
WhteRbt
Tech / General Engine
2
Sep 21, 2015 09:48 AM




All times are GMT -5. The time now is 10:33 PM.