someone told me that the most we can get our compression to is 9.6 to 1 because of our cylinder heads........this makes no sense to me

cuz i want higher compression


what would be a safe level of compression for the street say using 93 octane???

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Slayer of the following:
2000 saturn
198? Ford Crown Vic, (no i don't know why he bothered)
1990 Buick LeSabre 3.8
1986 Camaro 2.8
Food that makes me sick: RICE
1991 Camaro RS 3.1 V6 5-speed
1991 Z28 Rims
dual snorkel intake

 

usually 9.5:1 is the limit for street carbed engines without using racing fuel( or higher octane fuel). However, with computer controled vehicles, it should depend on the computer/igniton control. Also having more compression won't give you a whole lot more hp over lower compression, unless your engine is being purpose built to race.

The preceding is my opinion, ..if wrong my bad, if right, use it

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85 Firebird. $150.00
2.8 Auto.
Blown Head Gasket.
Mods Galore to Come....

 

how come corvettes have like 10.5 to 1 compression, then???

 

Newer production cars can manage higher compression because the computer can compensate for timing (detenation), and such. The computer basicly has full control over this.

I can't fully explain what I mean, but I know it to be true, I'm sure there are others who can explain it better than I can.

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85 Firebird. $150.00
2.8 Auto.
Blown Head Gasket.
Mods Galore to Come....

 

well, i heard from someone.......they said i should raise my compression for more HP

dumb question, but what exactly is detonation?

 

The Corvette uses aluminum heads. Newer cars have higher compression because MANY new cars use aluminum heads now. If you look back at the 80's, iron heads were used alot more.


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-Dan
-1990 3.1L RS
-Mods? no
-Slow? yes

 

ok, so what your saying then is that its not even possible to get 10:1 compression on our motors

 

Our car will rev over 5000 rpms, so you really don't need higher compression. A simple port and polish of your heads and intake will sufice.

Rob

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Chevy 2.8L 60° V6
Mods:
•K&N Filter Lid
•87 Formula Hood
•Bosch Platinum +4
•Hi-Flo CatCo CAT
•Flowmaster 80 Series Muffler
•83 Trans Am 15x7 Turbo Fin Wheels
•B.F.Goodrich Radial T/A 225/60-15
•Chevy 2.8L Heddman Headers (Going on soon)


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