The Grond Chronicles : LS1 & LS2, Side by Side <Pics> [Dialup; Cardiac Arrest
09-27-2006, 08:32 PM
#1
Supporting Tuner
Thread Starter
The Grond Chronicles : LS1 & LS2, Side by Side <Pics> [Dialup; Cardiac Arrest
I thought it might be useful to other members if they saw the differences between the LS1 block and the LS2 block, and to point out the potential pitfalls if you are building an LS2 from scratch.
So I unshipped my new LS2 bare block tonight to compare and contrast between the LS1 block and the LS2 block.
A C5 General First!
Enjoy
EG
Firstly, huge thanks to Stangkiller for bringing back my LS1 block - the original Grond engine.
Warning : Garage Queens may wish to avert their eyes..
Yes folks, a C5 can haul parts...
Good fit
OK. Let's get this bad boy unshipped
So I unshipped my new LS2 bare block tonight to compare and contrast between the LS1 block and the LS2 block.
A C5 General First!
Enjoy
EG
Firstly, huge thanks to Stangkiller for bringing back my LS1 block - the original Grond engine.
Warning : Garage Queens may wish to avert their eyes..
Yes folks, a C5 can haul parts...
Good fit
OK. Let's get this bad boy unshipped
09-27-2006, 08:32 PM
#2
Supporting Tuner
Thread Starter
On with the comparo
LS1 valley with knock sensors and ineffecient oil drainback design
You can see the fundamentally different valley on the LS2.
Knock sensors are gone from the valley (relocated to the side) and oil drainback is much improved
Here, the LS1 cam sensor and oil pressure fittings
And here, the LS2 cam sensor is moved to the front
LS1 valley with knock sensors and ineffecient oil drainback design
You can see the fundamentally different valley on the LS2.
Knock sensors are gone from the valley (relocated to the side) and oil drainback is much improved
Here, the LS1 cam sensor and oil pressure fittings
And here, the LS2 cam sensor is moved to the front
Last edited by EG@EnglandGreen; 09-28-2006 at 07:13 AM.
09-27-2006, 08:32 PM
#3
Supporting Tuner
Thread Starter
Many changes on the front.
Note: oil plugs in block
Some of the changes are interesting, like the smaller oil galley on the top, the 2 tapped holes for the LS2 timing chain tensioner
Note: new oil plugs for the block need to be bought otherwise massive oil leak on first fire!
Rear view.
Mustn't forget - New dowels and oil plug to buy and install
And Made in Canada
Dowels for heads to either transplant or buy new. I prefer to buy new.
Note, awesome oil passage change for the lifters!!
Lest we forget this is a LS2!!!
Here, water jacket plug and oil plug to either remove and transplant or buy new.
I prefer new. Don't forget lots of Locktite Red
Note: oil plugs in block
Some of the changes are interesting, like the smaller oil galley on the top, the 2 tapped holes for the LS2 timing chain tensioner
Note: new oil plugs for the block need to be bought otherwise massive oil leak on first fire!
Rear view.
Mustn't forget - New dowels and oil plug to buy and install
And Made in Canada
Dowels for heads to either transplant or buy new. I prefer to buy new.
Note, awesome oil passage change for the lifters!!
Lest we forget this is a LS2!!!
Here, water jacket plug and oil plug to either remove and transplant or buy new.
I prefer new. Don't forget lots of Locktite Red
Last edited by EG@EnglandGreen; 09-27-2006 at 09:05 PM.
I must give it to you..you DA MAN 
09-27-2006, 08:50 PM
#7
Le Mans Master
Great comparo! Thanks for your time and effort!
09-27-2006, 08:54 PM
#9
Supporting Tuner
Thread Starter
Originally Posted by Virtual Geezer
Great comparo! Thanks for your time and effort!
09-27-2006, 08:59 PM
#10
Race Director
Member Since: Sep 2003
Location: Now in God's Country, the Big Sky, Montana!
Posts: 13,550
Likes: 0
Received 4 Likes
on
4 Posts
Cruise-In 7-8-9-10 Veteran
St. Jude Donor '06-'07-'08-'09-'10-'11-'12
Great pics!!!! Is the block already machined for the knock sensors on the side? Also, don't forget about adjusting the oil pickup tube.
09-27-2006, 09:00 PM
#11
Team Owner
Member Since: Mar 2002
Location: Queens, New York Life begins at 183 mph....
Posts: 47,647
Likes: 0
Received 0 Likes
on
0 Posts
St. Jude Donor '08-'09
Awesome pics Stephen!!
The LS2 looks so much beefier than the LS1. I still love my LS1 though and won't give it up till it goes Grond.
The LS2 looks so much beefier than the LS1. I still love my LS1 though and won't give it up till it goes Grond.
09-27-2006, 09:03 PM
#12
Supporting Tuner
Thread Starter
Originally Posted by Cajundude
Great pics!!!! Is the block already machined for the knock sensors on the side? Also, don't forget about adjusting the oil pickup tube.
LOTS of machine work to be done on it - not just knock sensors
09-27-2006, 09:04 PM
#14
Race Director
Great write up EG!I love looking at bare motors and see how it looks inside!
ok, now for some small talk...what do you mean by "unship?" how come you didnt say "unpack?" If you unship a package then it means you bonked the fedex guy over the head with your bologne and took back your package that you were going to send out.
ok, now for some small talk...what do you mean by "unship?" how come you didnt say "unpack?" If you unship a package then it means you bonked the fedex guy over the head with your bologne and took back your package that you were going to send out.
09-27-2006, 09:05 PM
#15
Le Mans Master
I have nothing useful to add to this thread, but I wanted to get a post in on page one of an EG/Grond thread. I've never done it before!!! 
Kidding aside, those are really cool pics to compare the two. Can't wait to see what else you find.
Kidding aside, those are really cool pics to compare the two. Can't wait to see what else you find.
09-27-2006, 09:43 PM
#20
Race Director
Member Since: Jan 2003
Location: Houston, Tx Got traction?
Posts: 14,285
Likes: 0
Received 0 Likes
on
0 Posts
CI 5-6-7-8-9-10 Veteran
St. Jude Donor '07-'08
Nice comparison Stephen...with the added Motor in my car, my car handled and hooked MUCH better...I think we got something here. 