Forged or cast pistons?
Thread Starter
Racer
Joined: Aug 2009
Posts: 337
Likes: 6
From: Kanata ON
Forged or cast pistons?
I always understood, from a number of sources (ex: here and here), that forged pistons were used in 1985 and earlier Corvette engines, but I just noticed the 1985 factory service manual says:
It also says:
Forced induction/nitrous will go a lot better if the service manual is wrong 
Anyone know for sure which is right?
The pistons are made of a cast aluminum alloy using two compression rings and one oil control ring. Pins are Cromium steel and have a floating fit in the pistons. They are retained in the connecting rods by a press fit.
Connecting rods are made of forged steel
Connecting rods are made of forged steel
The crankshaft is cast nodular iron and is supported by five main bearings
Anyone know for sure which is right?
Thread Starter
Racer
Joined: Aug 2009
Posts: 337
Likes: 6
From: Kanata ON
Gaah, I hadn't been creative enough with searching. This thread seems to have concluded the FSM is wrong
WooHoo!
WooHoo!
Thread Starter
Racer
Joined: Aug 2009
Posts: 337
Likes: 6
From: Kanata ON
The one thing everyone agrees on is that '86 and up are not forged so I don't think the forged thing in '85 had anything to do with the Callaways.
