L92 heads on a LS1 ???
Le Mans Master
Joined: Aug 2005
Posts: 5,375
Likes: 328
From: CA.
St. Jude Donor '13-'14-'15
Can't be done----From what I've ben told by machine shops or at least not reccomended to bore a LS1/LS6 to 4.0----
HOWEVER--Mast Motorsports makes their own version of the L92 head that will fit on s stock bored LS1/LS6
You will need a L92 intake manifold-- A new style LS3 or L92 throttle body--A T-Body pigtail adapter-- A new fuel rail that fits--May also need different injectors--not sure but if so injector pigtail adapters as well---
HOWEVER--Mast Motorsports makes their own version of the L92 head that will fit on s stock bored LS1/LS6
You will need a L92 intake manifold-- A new style LS3 or L92 throttle body--A T-Body pigtail adapter-- A new fuel rail that fits--May also need different injectors--not sure but if so injector pigtail adapters as well---
Race Director
Joined: Dec 2004
Posts: 13,760
Likes: 75
From: Haymarket VA
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
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
Race Director
Joined: Dec 2004
Posts: 13,760
Likes: 75
From: Haymarket VA
Something else to add here. You can't bore a 346 to 4". You can however sleeve them. Getting an LS2 block and sleeving it would be a much better option. THEN - you can run the L92 heads which IMHO are a very good choice but only if cammed properly.
Team Owner
Joined: Sep 2003
Posts: 43,084
Likes: 33
From: Raleigh / Rolesville NC
There are a few builders that are putting 243 heads on the LS3s and getter better results then the L92 heads.
again depends on your application.
Some times it may be best to do nothing then do a cheap build.
Last edited by AU N EGL; Dec 16, 2010 at 03:31 PM.
Race Director
Joined: Dec 2004
Posts: 13,760
Likes: 75
From: Haymarket VA
Team Owner
Joined: Sep 2003
Posts: 43,084
Likes: 33
From: Raleigh / Rolesville NC
That is so true Kevin
Then we have also seen many LS3s go bang this summer in racing.
Oiling issues are the big one and the heads were issues in others.
Heck one guy went through THREE LS3s in a week
Then we have also seen many LS3s go bang this summer in racing.
Oiling issues are the big one and the heads were issues in others.
Heck one guy went through THREE LS3s in a week
Race Director
Joined: Dec 2004
Posts: 13,760
Likes: 75
From: Haymarket VA
Team Owner
Joined: Sep 2003
Posts: 43,084
Likes: 33
From: Raleigh / Rolesville NC
Thread Starter
Racer
Joined: Aug 2010
Posts: 309
Likes: 1
From: Mendota IL
Not quite. I was asking out of curiosity. I'm new to the LS-x and just trying to learn differences between LS engines. I read a couple articles on the L92 heads that specified how well they flowed and the power potential the heads offer. The more I read about LS engines the more questions I come up with that have nothing to do with my car/application. I just like to know facts.
The heads I'm actually going with for my application are a set of Total Engine Airflow LS1 Stage 1.5 heads, and a Camshaft Innovations custom cam. Yes, I heavily considered the 243 casting heads but for what I want the TEA 241 stage 1.5 heads are great. In the mean time, if I do happen to find a set of used stock 243/799 heads for a good price I would pick them up and send them off to TEA.
I guess I should have added this to the original post, lol.
The heads I'm actually going with for my application are a set of Total Engine Airflow LS1 Stage 1.5 heads, and a Camshaft Innovations custom cam. Yes, I heavily considered the 243 casting heads but for what I want the TEA 241 stage 1.5 heads are great. In the mean time, if I do happen to find a set of used stock 243/799 heads for a good price I would pick them up and send them off to TEA.
I guess I should have added this to the original post, lol.
Last edited by R6cowboy; Dec 20, 2010 at 09:28 AM.
