Combustion Chamber Size on L98?
09-09-2008 | 11:45 AM
#1
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Joined: May 2008
Posts: 286
Likes: 1
From: Cicero, IL.
Car: 1987 Pontiac Firebird Trans Am WS6
Engine: SBC 350
Transmission: T-56
Axle/Gears: 3.70:1 BW M78 9-Bolt Posi
Combustion Chamber Size on L98?
Does anyone know what the combustion chamber size is on stock L98 heads? Is it 64cc?
09-09-2008 | 11:57 AM
#2
Joined: Mar 2005
Posts: 610
Likes: 22
From: Austin TX
Car: 89 Formula
Engine: 383 SBC/HSR
Transmission: 700R4
Axle/Gears: 3.73
Re: Combustion Chamber Size on L98?
No, I believe they are 76cc heads on L98 350's and the 305's had 58 cc heads.
09-09-2008 | 12:08 PM
#4
Joined: Mar 2005
Posts: 610
Likes: 22
From: Austin TX
Car: 89 Formula
Engine: 383 SBC/HSR
Transmission: 700R4
Axle/Gears: 3.73
Re: Combustion Chamber Size on L98?
Hmmm, that's interesting, I was told that 76cc was the stock L98 cast iron head, that's why they have like 9.5:1cr. I think you're right, maybe the stock pistons are dish or flat top pistons......I can't remember. 
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