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What are the specs for L98 iron heads??

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Old Jul 20, 2006 | 09:37 AM
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CHEVY_EATER's Avatar
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From: Plattsburgh,NY
Car: 93 Mustang GT
Engine: 5.0
Transmission: T-5
What are the specs for L98 iron heads??

What are the specs on the stock L98 iron heads? Flow data..valve size...etc..?
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Old Jul 20, 2006 | 09:52 AM
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Car: 1982 Trans-Am
Engine: 355 w/ ported 416s
Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73
do a search for more info.
1.94/1.5" valves
64cc chambers.
flow data varies, but search on that one.
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Old Jul 20, 2006 | 10:02 AM
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CHEVY_EATER's Avatar
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From: Plattsburgh,NY
Car: 93 Mustang GT
Engine: 5.0
Transmission: T-5
Originally Posted by Sonix
do a search for more info.
1.94/1.5" valves
64cc chambers.
flow data varies, but search on that one.
I tried some searches..any ideas what to trying searching under for key works?

The reason I ask..is that my friend has a set of them..all rebuilt and ported..and selling them cheap. My cousin has a 87 Monte SS..and his heads need new guides and etc. The L69 305 heads are 58cc 1.84/1.5 valves but I want to know what the difference in power will be vs. each other. I know alot of people run the 305 heads on 350's to gain compression and run decent.
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Old Jul 20, 2006 | 10:16 AM
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From: Armpit state
Car: 71 Nova
Engine: Superramed 383, Topline heads
Transmission: 700r4
Axle/Gears: 8.2 posi 3.08
https://www.thirdgen.org/forums/tbi/...-headflow.html
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Old Jul 20, 2006 | 12:11 PM
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CHEVY_EATER's Avatar
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From: Plattsburgh,NY
Car: 93 Mustang GT
Engine: 5.0
Transmission: T-5

Hmm....so they are not alot better than the 305 heads flow wise???
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