Lt4
Senior Member
Joined: Sep 2001
Posts: 968
Likes: 0
From: Montreal\Quebec|Canada
Car: Camaro Z281991 Engine: 5.7L/350 TPI Transmission: TH700R4 ··································· Car: Acura CL 1998
Engine: 3.0L/183
Transmission: 4 spd auto/OD
To my noleage, the LT4 is a modified LT1 with LT4 heads, intake,
and hotcam.
and hotcam.
Supreme Member
Joined: Jun 2002
Posts: 1,571
Likes: 0
From: ATX
Car: Kitt
Engine: Classified
Transmission: T56
Axle/Gears: Moser/4:11
I think the LT4 was the most powerful version of the small block Chevy ever produced. The LS1 is another type of block. The LT4 was basically an LT1 with better flowing heads and intake. The cam was a little more aggresive I think too. It was rated at 330 HP. Someone correct me if I'm wrong though.
Senior Member
Joined: Dec 1999
Posts: 954
Likes: 1
From: Annandale, VA
Car: 1991 Formula Firebird
Engine: 2001 LS1 Modded
Transmission: 2001 4L60E Yank SS3600 TC
With the different heads came bigger (soduim filled) valves, different rockers, etc. The engine also had a higher redline than the LT1.
Member
Joined: Sep 2003
Posts: 141
Likes: 0
From: The great state of Texas
Car: 1985 Black IROC-Z
Engine: 305 T.P.I (for now)
Transmission: TH700"R"4 (R for Racing)
The LT4 also used a 4 bolt main block while the LT1's have a 2 bolt. I would settle for any of them two, to put under the hood of my black/gold 1985 Iroc-Z.
Supreme Member
Joined: Oct 2000
Posts: 3,819
Likes: 3
From: Angleton, TX
Car: '92 RS
The LT4 that came in the Grand Sport Vette's and the few F-Bodies that got them were rated at 330 hp. The Hotcammed LT4 is supposed to put out 425 hp but a more realistic number is 400. Good luck finding a factory LT4. You can get the kit from a number of places but most people agree you can do better for the money.
Trending Topics
Supreme Member
Joined: Oct 2000
Posts: 3,819
Likes: 3
From: Angleton, TX
Car: '92 RS
Originally posted by Aqua FBody
I was just wondering because I saw a hotrod with one and it was pretty quick
I was just wondering because I saw a hotrod with one and it was pretty quick
Joined: Feb 2001
Posts: 13,740
Likes: 551
From: Cincinnati, OH
Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
The lT4 was created because GM wanted more power out of what they had while the LS1 stuff finished up for the new vette. They wanted the C4 to go out with a bang. Here are a few links that go into some detail on the differences.
http://www.malcams.com/legacy/misc/LT4.htm
http://www.malcams.com/legacy/misc/lt1lt4.html
http://www.malcams.com/legacy/misc/LT4.htm
http://www.malcams.com/legacy/misc/lt1lt4.html
Thread
Thread Starter
Forum
Replies
Last Post
TX-SleeperC5
Engine/Drivetrain/Suspension Parts for Sale
1
Sep 24, 2015 03:13 PM
1988iroc350tpi
Tech / General Engine
8
Aug 14, 2015 07:52 PM