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'91 L98 with old style heads?

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Old Mar 14, 2002 | 07:55 PM
  #1  
Ukraine Train's Avatar
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From: Cleveland, OH
Car: '87 Camaro LT
Engine: 355 L98
Transmission: T56
'91 L98 with old style heads?

Try and figure this one out....

The Vette L98 I bought is a '91 but has old style heads - all the holes are on the same plane, perpendicular to the surface of the heads. I know for sure it's a new style engine cuz it has roller lifters. the engine has been untouched since new so this was a factory job. anyone know what the deal is?

Last edited by Ukraine Train; Mar 14, 2002 at 08:07 PM.
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Old Mar 15, 2002 | 11:16 PM
  #2  
Vader's Avatar
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U-Train,

Don't know... good question. It certainly doesn't seem right, since the rollers came out the same time the canted intake bolts did. At least I'll bump it back up on the page.
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Old Mar 16, 2002 | 03:00 AM
  #3  
zroc's Avatar
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From: way over there
Car: 87 IROC
Engine: LB9 for the moment
Transmission: T5
the heads on the ZZ4 engine are the same (97 engine)... what was the reason for the 72* center bolts???

zroc
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Old Mar 16, 2002 | 07:07 PM
  #4  
Z03Z28's Avatar
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Joined: Oct 2001
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From: Baltimore Maryland U.S.A
Car: 92Z28,98LegacyGT,ZX9R,91 Z28,02 Z71
Engine: 350,307,2.5,900cc,5.0
Transmission: 700r4,4spd auto,700r4,4L80
Axle/Gears: 323,?,323,?,373
I thought Vettes didn't have the L98 in 91
didn't they have LT1's then.
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Old Mar 16, 2002 | 10:12 PM
  #5  
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From: Coushatta LA
I am pretty sure that the corvette with the L98 had the aluminum heads and for some reason gm decided to use the old style bolt configuration with these heads. I think the Lt1 had its debut in the 92 vettes and then the 93 Fbody.
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