LT5 or LS1
I think that the LS1 owns both.
The LT5 is a maintenance nightmare, and horribly expensive to work on. Yeah, is was killer stock, but to mod it?? Better have a big pocket. The LS1, well, we all know about that.
The LT5 is a maintenance nightmare, and horribly expensive to work on. Yeah, is was killer stock, but to mod it?? Better have a big pocket. The LS1, well, we all know about that.
Launching!
Joined: Jul 2003
Posts: 204
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From: MI
I head somewhere that getting your hands on an LT5 crate engine can run $20K plus. Just based on that alone, in terms of dollar/horsepower, I'm tempted to say that both the LT1 and LS1 are better than it is. I mean, I'm sure you could absolutely waste both of them with the 4-valve heads on an LT5, but so what? Strap on a supercharger and that advantage goes out the window.
TECH Senior Member
Joined: Jun 2003
Posts: 9,339
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From: NYC metro area
Originally Posted by Elysian
I head somewhere that getting your hands on an LT5 crate engine can run $20K plus. Just based on that alone, in terms of dollar/horsepower, I'm tempted to say that both the LT1 and LS1 are better than it is. I mean, I'm sure you could absolutely waste both of them with the 4-valve heads on an LT5, but so what? Strap on a supercharger and that advantage goes out the window.
I tell you what though, if I wanted to build an awesome show car and I was a rich SOB, I'd throw an LT5 in it instead of an LS1.
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So what stopped GM from continuing on with the OHC setup? I think that would have been great if they stuck that in all the Corvettes, while the F-bods got the LT1-LS1 (and descendants). It would have made the heavies at GM happy knowing that they wouldn't have to tune down those motors just to make the Corvette owners happy and to save it's face.
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Verdad Gallardo TECH Senior Member
Joined: Jun 2003
Posts: 9,339
Likes: 3
From: NYC metro area
Originally Posted by transamman400
So what stopped GM from continuing on with the OHC setup? I think that would have been great if they stuck that in all the Corvettes, while the F-bods got the LT1-LS1 (and descendants). It would have made the heavies at GM happy knowing that they wouldn't have to tune down those motors just to make the Corvette owners happy and to save it's face.
Staging Lane
Joined: Mar 2003
Posts: 70
Likes: 0
From: Cordova, TN
Originally Posted by transamman400
So what stopped GM from continuing on with the OHC setup? I think that would have been great if they stuck that in all the Corvettes, while the F-bods got the LT1-LS1 (and descendants). It would have made the heavies at GM happy knowing that they wouldn't have to tune down those motors just to make the Corvette owners happy and to save it's face.
I don't really care for OHCs anyway. That's just BS that OHV is old technology, the first DOHC engine was invented in 1913. I'd take a pushrod motor over a OHC job anyday!
Launching!
Joined: Jul 2003
Posts: 204
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From: MI
It seems to me that just in terms of valve-train mass, and OHC design, probably, has more potential. You should be able to rev them substantially higher without having to worry about things like bending pushrods. Obviously, with enough $$$, any motor can be made to perform quite well, though. Given the #'s I've seen on LS1 motors, it would be difficult to say that they "suffer" from using pushrod technology.
TECH Senior Member
Joined: Jun 2003
Posts: 9,339
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From: NYC metro area
Originally Posted by transamman400
I don't really care for OHCs anyway. That's just BS that OHV is old technology, the first DOHC engine was invented in 1913. I'd take a pushrod motor over a OHC job anyday!
I just think OHV are easier to work with, and if you upgrade the right parts you don't really have to worry about problems with pushrods. Cheaper too.
By what I meant about the Corvette, I mean GM's crusade to always make sure the Corvette is the best and the fastest of the line.
By what I meant about the Corvette, I mean GM's crusade to always make sure the Corvette is the best and the fastest of the line.
TECH Senior Member
Joined: Jun 2003
Posts: 9,339
Likes: 3
From: NYC metro area
Originally Posted by transamman400
I just think OHV are easier to work with, and if you upgrade the right parts you don't really have to worry about problems with pushrods. Cheaper too.
Originally Posted by enisguy
This is very true, and a good point, but from a performance standpoint I'd rather have an OHC for the bulletproof valvetrain.
On The Tree
Joined: Nov 2003
Posts: 189
Likes: 1
From: South Jersey
John Lingenfelter in his book on modifying small block chevy's shows a 385CID LT5 that makes 572hp@6800 and 497tq@5600. This is all motor. With enough money the lt5 is the way to go.
P.S. Fastbird did you get my reply about the dyno tune. Get back to me.
P.S. Fastbird did you get my reply about the dyno tune. Get back to me.
Staging Lane
Joined: Oct 2003
Posts: 90
Likes: 0
From: Roselle, IL
There are some 415 LT5s making upwards of 600 rwhp. I know some guys who did a good head and topend porting job and are dynoing in the 430rwhp range. GM stopped making it because of cost and it would not fit in the C5.
On The Tree
Joined: Mar 2004
Posts: 104
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Originally Posted by Elysian
I head somewhere that getting your hands on an LT5 crate engine can run $20K plus. Just based on that alone, in terms of dollar/horsepower, I'm tempted to say that both the LT1 and LS1 are better than it is. I mean, I'm sure you could absolutely waste both of them with the 4-valve heads on an LT5, but so what? Strap on a supercharger and that advantage goes out the window.