I'm going to pick up a 85 vette L-98 longblock from a friend tomorrow. I have a couple questions..Is it a roller cam block? I know it has iron L98 heads and I assume it is a one piece rear main seal also? Does anybody have cam specs? I can't find them anywhere.
I also heard that they might be a 4 bolt main with forged pistons, but i doubt this. Any info there? Thanks.

 

85 Vette L98

2 piece rear main seal (86 and up 1 piece rear main seal)
85 Vette L98 had Forged pistons
Mid 86 Vette L98 received aluminum heads
85 Not a roller block (87 was the first year)
I know the oil pan was unique for the 86-91 Vette L98's due
to the windage tray. Not sure about the oil pan on a 85 since
it had a 2 piece rear main seal.
I think the lift of the cam is in the .410 range.
All Vette L98's were 2 bolt mains.
This information applies to factory installed Vette L98's and not
the factory crate engines.

 

I was pretty sure that all the aluminum head L98's were 4 bolt mains.

Not arguing, just trying to learn something!!!

 

I'm positive all 85-91 Factory L98 Vettes had 2 bolt mains.
If you can prove me wrong, I'll donate my 89 Vette to you.

 

passenger side oil dipstick

From the 85 shop manual: lobe lift intake=.2733, exhaust=.2820

2 piece rear main

Forged pistons, rods

cast crank

 

I trust ya. Guess I picked up some misinfo somewhere.

...of course with a Vette on the line, you know I have to check!!!

:lala:

 

you would be thinking of the LT1s. The 'Vettes with the LT1s were the only LT1s that were 4-bolt mains.
Just a little FYI:lala: