forged rods and crank??

02-18-03, 07:40 PM

I have a 1976 Corvette motor in my 1955 chevy. I believe that the engine is a L81. I would love some more info on H.P and whether or not it has forged rods and crank.
Thanks: Knobie

AKRAY4PLAY · 02-19-03, 12:02 AM

Knobie,
the L-82 in 1976 had 210 hp from the factory. i am almost completely possitive that the rods and crank are cast units. Brian

corvgreg · 02-19-03, 04:34 PM

Chevy rods are always forged. The hi-perf rods are magnufluxed and shot-peened. LT1 and L82 cranks are forged.

Vette/Berlina-coupe · 02-19-03, 05:27 PM

-thought L82 crankshaft just nodular/castiron, not forged-steel like L81... ~Bob vH

Tom73 · 02-19-03, 06:23 PM

The L82's have forged rods and crank. The pistons are alum impact extruded. Also has a 4-bolt main block.

tom...

MaineShark · 02-19-03, 06:40 PM

How do impact extruded pistons compare to standard piston types (hypereutectic, forged, etc.)?

Joe

Jack · 02-19-03, 09:15 PM

AFAIK, impact extruded just another moniker for forged.
JACK

Tom73 · 02-20-03, 02:05 PM

Quote:

Originally posted by MaineShark
How do impact extruded pistons compare to standard piston types (hypereutectic, forged, etc.)?

Joe,
Here is a great link to info on the different types of pistons and their construction. Check it out.

http://www.kb-silvolite.com/page02.htm

tom...