L98 specs
Thread Starter
Melting Slicks
Joined: Jun 2004
Posts: 3,032
Likes: 4
L98 specs
Where can I find details out about the L98 in my '85. I have read conflicting details about the engine in it. Type of pistons/cam/injectors/etc. I see in another post that the '85 uses forged pistons? I remember reading that the stock cam in an 85 is different from other years (l98's), and that it is far better? Or were these just opinions?
The stuff I read seems to indicate the '85 l98 is different from every other one (besides the obvious use of all cast-iron).
Can any point me towards some info to prove or disprove this?
The stuff I read seems to indicate the '85 l98 is different from every other one (besides the obvious use of all cast-iron).
Can any point me towards some info to prove or disprove this?
Last edited by mikey whipreck; Nov 12, 2004 at 04:01 PM.
Team Owner
Joined: Dec 2000
Posts: 90,675
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From: SE NY
Cruise-In II Veteran
I happen to have an '85 GM Shop Manual, as well as one for my '88 Vette, and the '85 shop manual quotes your pistions as cast Al. But some guys swear that they are forged, so I tend to suspect the data in the manual.
However, here is the cam lift: .2733"/.2820". BTW, my '88 shop manual quotes the same specs???
However, here is the cam lift: .2733"/.2820". BTW, my '88 shop manual quotes the same specs???
Team Owner
Joined: Sep 2001
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From: Athens AL
C7 of the Year - Unmodified Finalist 2021
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85 and 86 cams are the same, 202/206 @050. 84 and 85 had forged pistons heldover from C3.
Its a 2-piece seal, only L98 that should have one.
Its a 2-piece seal, only L98 that should have one.
Race Director
Joined: Sep 2000
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From: The Top of Utah
Except for the camshaft the 1984 L83 and the 1985 L98 have identical long blocks. The cam was 1985 and 1986, only, as vader86 said. 1986 used the same crappy '624 heads and changed to cast pistons and the one piece rear main seal block and crank.
RACE ON!!!
RACE ON!!!
