Combustion Chamber Size on L98?
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Joined: May 2008
Posts: 286
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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?
Joined: Mar 2005
Posts: 615
Likes: 27
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.
Joined: Mar 2005
Posts: 615
Likes: 27
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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tyeo098
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Nov 30, 2015 06:27 PM
