???, and will I want to use the same size chamber with 10:1 pistons? Thanks.

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1987 Chevy Camaro IROC-Z
L98 TPI 350 (5.7L)
TH 700R-4 Transmission with 2.77:1 Rear End

Current Mods: Edelbrock TES Headers, Hooker Cat-Back System, Performance Resource Chip with 160* Thermostat, Accel Ignition Components, K&N Filters, All Free Mods, Falken ZIEX Z-Rated Tires.

Best ET: 14.3 @ 97mph

 

I *think* the cast Iron l89s are 64cc.
I know the aluminum L98s are 58cc.

 

On paper its 64cc but I talked to different engine builders and they said that some go as high as 67cc.

Daz

 

aluminum 350 heads 87-92 58cc

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Iroc 350 5 speed

 

Yeeup,

Cast Iron L98 heads are 64cc and Aluminum L98 heads are 58cc.

Tim

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TRAXION's 1990 IROC-Z
Best Time = 12.587 @ 107.97mph (1.710 60ftr) on the long runner setup.
All Natural. No Force. No Drugs. Stock Bottom End. Stock Body Panels. Stock Wheels. No Weight Reduction.
Gunning for NA 11's with the MiniRam II and Hooker LT Headers.
-=ICON Motorsports=-
Moderator: PROM board at thirdgen.org