1990 L98 350 cam/heads question
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Junior Member
Joined: Mar 2005
Posts: 45
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From: Bethlehem, pa.
Car: 1990 camaro iroc-z
Engine: 5.7 TPI
1990 L98 350 cam/heads question
Does anyone know what cam is in my 1990 irocz 350 auto and what the head numbers would be, i was told they were factory aluminum heads ... where they avail in that half year of production? ...
Joined: Oct 2006
Posts: 3,041
Likes: 8
From: West of Toronto
Car: 89 IROC
Engine: 305 TPI / ZZ4 cam
Transmission: Stage 2 700R4, LS1 driveshaft
Axle/Gears: Strange 3.42 w/ Auburn
Cam specs are as follows.
GM Part number 10111773. Dur. .202/.207 Lift .413/.428 Lobe 114.5.
Not sure about the heads.
GM Part number 10111773. Dur. .202/.207 Lift .413/.428 Lobe 114.5.
Not sure about the heads.
Last edited by The Project; Dec 17, 2006 at 06:39 AM. Reason: Automerged Doublepost
Supreme Member
Joined: Jan 2003
Posts: 1,931
Likes: 1
From: Ontario, Canada
Car: 1989 IROC-Z
Engine: 5.7L EFI LTR setup
Transmission: T-5 World Class
heads weren;t stock on that car. Unless it cameout of a vette. So someone either swapped the heads on ...or it's the whole motor form a vette . The aluminum heads are known as the " 113 " heads around here. Do a search with that and you will find litterally gobs of info .
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