LS-1 double overhead cam engine? - Corvette Forum

Go Back   Corvette Forum > C5 Corvettes, 1997 - 2004 > C5 Tech
Log In 
Register FAQ Search Today's Posts Mark Forums Read Vendor Directory
Search

C5 Tech
Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace

LS-1 double overhead cam engine?

Reply
 
 
 
Thread Tools Search this Thread
Old 10-16-2008, 03:30 PM   #1
claysmoker
CF Senior Member
St. Jude Donor '09-'11-'12-'13-'14
 
claysmoker's Avatar
 
Member Since: Dec 2004
Posts: 7,492
Location: PARADISE
Thanked 21 Times in 19 Posts
Default LS-1 double overhead cam engine?

Supposedly these were made for some kind of one-off racing class in a Cobra body, and supposedly GM built them.

I have a chance to buy one cheap, and I need whatever info I can find.

Thanks, Dave
claysmoker is offline   Reply With Quote
Old 10-16-2008, 03:58 PM   #2
lucky131969
Tech Contributor
 
lucky131969's Avatar
 
Member Since: Jan 2007
Posts: 15,138
Location: Hoffman Estates IL
Thanks: 0
Thanked 3 Times in 3 Posts
Send a message via Yahoo to lucky131969
Default

Quote:
Originally Posted by claysmoker View Post
Supposedly these were made for some kind of one-off racing class in a Cobra body, and supposedly GM built them.

I have a chance to buy one cheap, and I need whatever info I can find.

Thanks, Dave
Wow, I've never heard of that. You sure it's not an LT5? In any case, it would be a bastard engine setup.
lucky131969 is offline   Reply With Quote
Old 10-16-2008, 04:51 PM   #3
Shore
CF Senior Member
 
Shore's Avatar
 
Member Since: Sep 2004
Posts: 3,568
Location: Port Orange Florida
Thanks: 0
Thanked 0 Times in 0 Posts
Default

LT5 is the DOHC engine I know of.I couldn't imagine going from an internal cam to overhead on a LSX block.
Shore is offline   Reply With Quote
Old 10-16-2008, 05:48 PM   #4
byte_me
CF Senior Member
 
byte_me's Avatar
 
Member Since: Jun 2003
Posts: 3,887
Location: Coconut Creek FL
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Interesting...I too have never heard of this and I have read a lot about the design of the LS1...

I read in an LS1 performance book that durning initial testing of the LS1 engine, the engineers put an LS1 and an LT5 (boat motor - 32 valve ZR1 engine) in two test mules and allowed for a field test- although the LT5 @ 405HP showed an increase in power (duh) it was not immediate as was the LS1, meaning the the LS1 made its power lower in the RPM range and gave the engineers a kick in the pants they really enjoyed. Just about all of them preferred the LS1 car despite them not being allowed to look under the hood or knowing what was installed...

Now to my point...

it was after this test that confirmed the direction the LS1 engineers to keep a cam in design regardless of the (then thought) out of cam block design many sports car manufacturers touted as being the best of the best.

I guess to continue to prove this point, they shortly introduced the 405HP LS6 engine and the King of the Hill was no more on its own.

I would guess you have found an LT5 engine...
byte_me is offline   Reply With Quote
Old 10-16-2008, 06:58 PM   #5
blue63cpe
CF Senior Member
 
Member Since: Feb 2005
Posts: 488
Location: Arlington Hts. IL
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Perhaps its a northstar, i've read that the ls1 design came from it.
blue63cpe is offline   Reply With Quote
Old 10-16-2008, 08:06 PM   #6
ArKay99
CF Senior Member
 
ArKay99's Avatar
 
Member Since: Sep 2003
Posts: 3,554
Location: Indian Rocks Beach FL
Thanks: 0
Thanked 0 Times in 0 Posts
Default

2 things to consider.
1: Do you have pictures?
2: Be careful.

If there was a small run of an LS1 of this type I would think if it still ran it would be a: a museum piece, or b: very expensive.
ArKay99 is offline   Reply With Quote
Old 10-17-2008, 01:14 AM   #7
runamuk
CF Senior Member
Cruise-In V Veteran
St. Jude Donor '04
 
runamuk's Avatar
 
Member Since: Jul 2002
Posts: 7,347
Location: Slave to the evil empire
Thanks: 0
Thanked 0 Times in 0 Posts
Default

If there was a DOHC engine built GM wouldn't call it an LS-1 since that title was given to another motor.
runamuk is offline   Reply With Quote
Old 10-17-2008, 09:25 AM   #8
BLOWNBLUEZ06
Tech Contributor
 
BLOWNBLUEZ06's Avatar
 
Member Since: Apr 2007
Posts: 10,786
Location: Forney Texas
Thanked 7 Times in 7 Posts
Default

regardless, I wouldn't touch it. Next thing you know, you'll be wanting to upgrade parts with nowhere to go. Or you'll have technical questions with no one to ask. You'll go to the local parts store for some simple every day item and they'll look at you like you have 3 eyeballs.
__________________
Hsquaredracingengines.com LSX427, custom MAST heads, custom twin turbo kit using twin 6870's, custom fuel system, Moran billet atomizers, solid roller, custom BTR cam, RKT56 ZR1 trans, RPM quaife diff, DSS shaft, Tilton carbon quad clutch, Haltech Elite 2500 ECU. Assembled, installed and tuned by yours truly
I spend my money on Car Parts and Race Gas... The Rest I waste...
BLOWNBLUEZ06 is offline   Reply With Quote
Old 10-17-2008, 11:53 AM   #9
black98c5
CF Senior Member
 
Member Since: Jul 2005
Posts: 4,199
Location: Chicago-NW Burbs Illinois
Thanks: 0
Thanked 1 Time in 1 Post
Default

Quote:
Originally Posted by BLOWNBLUEZ06 View Post
regardless, I wouldn't touch it. Next thing you know, you'll be wanting to upgrade parts with nowhere to go. Or you'll have technical questions with no one to ask. You'll go to the local parts store for some simple every day item and they'll look at you like you have 3 eyeballs.
I would pass on it.
black98c5 is offline   Reply With Quote
Old 10-18-2008, 10:26 AM   #10
jovette
CF Senior Member
 
jovette's Avatar
 
Member Since: Feb 2006
Posts: 1,865
Location: Des Moines Iowa
Thanked 29 Times in 22 Posts
Default

I have an extreemly rare LS1 triple overhead cam experimental engine I'd let go, if the price was right!
jovette is offline   Reply With Quote
Go Back   Corvette Forum > C5 Corvettes, 1997 - 2004 > C5 Tech
Reload this Page LS-1 double overhead cam engine?
 
 
Reply


Similar Threads
Thread Thread Starter Forum Replies Last Post
Has anyone fitted an aftermarket paddle shift? Brit dex C5 Tech 10 10-02-2015 12:30 PM
78 restoration Tommy K 47 Intros 24 05-26-2015 05:16 PM
74 Vette door panel Carolina Optimist C3s for Sale/Wanted 3 03-16-2015 02:07 PM
GS Heritage Package - Question b4i4getit C6 Corvette General Discussion 22 01-04-2011 09:46 PM
turn one power steering pump? STEEL C5 General 3 08-09-2007 03:09 PM


Tags
1999, cam, cams, corvette, double, dual, engine, engines, enginw, head, heads, ls, ls1, overhead, twin

Thread Tools Search this Thread
Search this Thread:

Click for Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump



All times are GMT -4. The time now is 09:30 AM.