L98 Combustion chamber size
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Joined: Feb 2004
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From: Washington, D.C.
Car: 1989 Camaro IROC-Z
Engine: 350
Transmission: 700R4
L98 Combustion chamber size
Could some please tell me once and for all what the true combustion chamber size is on the 1989 L98 350 (stock iron heads)? I've heard 64, 76 and maybe every number in between. Does someone know what the true size is?
Thanks very much!
Thanks very much!
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Joined: Mar 2006
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Car: 1987 IROC 1991 RS
Engine: 5.7 TPI 5.0 TBI
Transmission: T-5 , 700R4
Axle/Gears: 2.73 twice
Got the casting numbers off the heads?
MorTec, Inc. Chevy Smallblock V-8 Casting Numbers List
This site has a lot of them, just check your casting #s and match it up.
MorTec, Inc. Chevy Smallblock V-8 Casting Numbers List
This site has a lot of them, just check your casting #s and match it up.
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From: Hamilton
Car: 1990 IROCZ Camaro
Engine: 350 4bbl, 200cc Heads, 270hr Cam
Transmission: 700R4 w/ Trans-Go shift kit.
Axle/Gears: GM 10 bolt Posi
Originally Posted by iroczracer07
58cc if I'm not mistaken.
Your heads are 64cc.
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From: Calgary, AB, Canada
Car: 1982 Trans-Am
Engine: 355 w/ ported 416s
Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73
The casting # should be xxxxx083. Those would be 64cc, as mentioned.
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