C4 LT1 heads on L82
Thread Starter
Safety Car
Joined: Jul 2001
Posts: 4,871
Likes: 15
From: Detroit's West Side MI
C4 LT1 heads on L82
Hey guys, a friend of mine is refreshing his L82 motor from a 1980 'vette and is considering installing the LT1 heads off of my '93 C4.
Is this a common swap, or is it more trouble than it's worth?
EDIT: Please note that these are the aluminum LT1 heads from a 1993, not the 1970's LT-1 heads. All of the searches I did mention the old LT-1 heads...want to avoid confusion.
Is it necessary to switch to a reverse cooled design to cool the aluminum heads first?
How do we get coolant to the heads? The stock intake has a coolant inlet port, but the Edelbrok carb'd LT1 style intake does not.
Suggestions?
Thanks.
Is this a common swap, or is it more trouble than it's worth?
EDIT: Please note that these are the aluminum LT1 heads from a 1993, not the 1970's LT-1 heads. All of the searches I did mention the old LT-1 heads...want to avoid confusion.
Is it necessary to switch to a reverse cooled design to cool the aluminum heads first?
How do we get coolant to the heads? The stock intake has a coolant inlet port, but the Edelbrok carb'd LT1 style intake does not.
Suggestions?
Thanks.
Last edited by ScaryFast; Jun 13, 2007 at 12:40 PM.
Melting Slicks
Joined: May 2001
Posts: 2,812
Likes: 4
From: Gig Harbor Wa
I didn't read the whole write up, but it looks like it has been done before. Not sure if it is worth the trouble with the welding and all.
http://www.thirdgen.org/techboard/tp...eads-gen1.html
http://www.thirdgen.org/techboard/tp...eads-gen1.html
Last edited by 70 LS1; Jun 13, 2007 at 01:20 PM.
Team Owner
Joined: Oct 2004
Posts: 23,831
Likes: 10
From: Springfield MO
St. Jude Donor '07
It's possible, but it's a PITA. I'd only do it if you're going to use an LT1 manifold for a fuel-injection setup. Otherwise, there are good, affordable heads that will bolt right up.
Thread Starter
Safety Car
Joined: Jul 2001
Posts: 4,871
Likes: 15
From: Detroit's West Side MI
Looks like adding the new coolant passages is the major part. You have to weld closed the old ones and bore new ones in the front.
I'll see what durango boy has to say...
Thanks!
I'll see what durango boy has to say...
Thanks!
Team Owner
Joined: Oct 2004
Posts: 23,831
Likes: 10
From: Springfield MO
St. Jude Donor '07
Durango got the idea from me. 
If you really want to know what's involved, send me a PM or email and I'll dig up my scans of the only article I've ever seen on the process.
If you really want to know what's involved, send me a PM or email and I'll dig up my scans of the only article I've ever seen on the process.
