L48 vs. L82
Race Director
Joined: Aug 2000
Posts: 12,975
Likes: 22
Re: L48 vs. L82 (Kloppy80)
L82: forged crank & pistons. 2.02 intake valves. 9.1 CR. Makes power after 2500 up to 6000. Aluminum intake. Four bolt mains.
L48: cast crank/pistons. 1.94 intake valves low eights on compression. More torque at low rpm. Lower red line. Two bolt mains.
If you plan to keep the original engine and use it to build, get the L82 simply for the stronger internals. Other that that, not much diff.
L48: cast crank/pistons. 1.94 intake valves low eights on compression. More torque at low rpm. Lower red line. Two bolt mains.
If you plan to keep the original engine and use it to build, get the L82 simply for the stronger internals. Other that that, not much diff.
Drifting
Joined: Mar 2001
Posts: 1,411
Likes: 2
From: St. Louis, Missouri
Re: L48 vs. L82 (UKPaul)
I've seen two bolt blocks used successfully for mild racing engines. Quality hardware is the key. Should be fine for just about any street engine. A machine shop can convert a two-bolt block to a four-bolt. The outer bolts are splayed from the conversion, making it even stronger than a OEM 4-bolt block.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
