Max bore size of a 2001 LS1 block
Teching In
Joined: Apr 2006
Posts: 35
Likes: 0
I'm dropping mine(383-LS1) in my 67' RS/SS with a M6 tranny. The tricky part is mounting the C4 IRS and rounting the exhaust.
Lets see some pics of the project? That sounds like an awsome ride in the making. I am on the fence about doing something like that.
Its just a shell right now, I took the front end off. I have some rust issues to contend with, so I need a full left rear quarter, trunk floor, and rear floor panels(the typical stuff for a car this old). I do have a LS1 shortblock already that I need to take apart. I'll get pics to you later.
As far as when I get my motor bored, are you guys having yours honed/bored with a deck plate?
The safest bore size I have been told on an LS1 is a .010 (3.908), though most go with a .007 (3.905)... the only problem I have found with those is it seems that all the pistons work with 6.125" rods, so you have to do rods as well. This is all from my understanding of the research I have done over the passed couple days, you may want to look into it a little more just to be on the safe side.
As far as when I get my motor bored, are you guys having yours honed/bored with a deck plate?
As far as when I get my motor bored, are you guys having yours honed/bored with a deck plate?
Teching In
Joined: Apr 2006
Posts: 35
Likes: 0
The safest bore size I have been told on an LS1 is a .010 (3.908), though most go with a .007 (3.905)... the only problem I have found with those is it seems that all the pistons work with 6.125" rods, so you have to do rods as well. This is all from my understanding of the research I have done over the passed couple days, you may want to look into it a little more just to be on the safe side.
As far as when I get my motor bored, are you guys having yours honed/bored with a deck plate?
As far as when I get my motor bored, are you guys having yours honed/bored with a deck plate?
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Ls2 Pistons in Ls1 Block. I have over bored ls1 blocks two times. They both run as we speak. Used Ls2 pistons with Ls2 rods on them. Next time is new cylinder sleeves 
It started just for fun, we had a broken Ls1 block from EBay with some broken tranny ears. welded them back and bored it up to 4.00"
I would not suggest to run blower on it, but they run good.
One of them runs a medium cam and 243 heads with full roller setup.
Works as a Ls2. But hell no, no guarantee
It started just for fun, we had a broken Ls1 block from EBay with some broken tranny ears. welded them back and bored it up to 4.00"
I would not suggest to run blower on it, but they run good.
One of them runs a medium cam and 243 heads with full roller setup.
Works as a Ls2. But hell no, no guarantee
FormerVendor
Joined: Nov 2005
Posts: 191
Likes: 0
From: Indiana
It will depend on which LS1 you have. The 1st Gen LS1 is not a block you want to mess with because of the bad oil passages it has but the 2nd Gen LS1 is a good one and is the same as the LS6 block. The way to tell the difference is that the 2nd Gen block head studs are all the same length and the 1st Gen head studs are different lengths.
We can sleeve the LS1 (2nd Gen) blocks using our ERL Superdeck 1 sleeving and we can do a standard 4 bolt configuration or a 6 bolt configuration to it. Our Superdeck 1 sleeving is currently holding at 2200 hp but that's our 6 bolt "race" application. It all really depends on what your application is as to what needs to be done and that will obviously determine the cost as well. What are you looking to do with this setup?
We can sleeve the LS1 (2nd Gen) blocks using our ERL Superdeck 1 sleeving and we can do a standard 4 bolt configuration or a 6 bolt configuration to it. Our Superdeck 1 sleeving is currently holding at 2200 hp but that's our 6 bolt "race" application. It all really depends on what your application is as to what needs to be done and that will obviously determine the cost as well. What are you looking to do with this setup?
4" bore There is no sense in sleeving the LS1 to 4" since one can purchase an LS2 block a lot cheaper than sleeving the LS1. The LS1 and LS6 blocks can not be reliably dry sleeved like I do with the LS2, LS3 and LS7 blocks.
Darton makes MID wet sleeves for the LS1 in two size ranges, 4.125" to 4.160" and 4.170" to 4.200". If you are interested in prices, send me a PM and I'll get back to you.
As ERL mentioned, the early LS1 block is slightly deficient in oiling because it lacks a rear oil galley cross over, save for the small cut out in the rear cover. The iron LQ4 and LQ9 blocks are identical to the early LS1 in this regard. I wrote a CNC program several years ago to machine the back of these blocks for the cross over passage increasing the oil flow. I charge $75 for this modification.
Steve
Darton makes MID wet sleeves for the LS1 in two size ranges, 4.125" to 4.160" and 4.170" to 4.200". If you are interested in prices, send me a PM and I'll get back to you.
As ERL mentioned, the early LS1 block is slightly deficient in oiling because it lacks a rear oil galley cross over, save for the small cut out in the rear cover. The iron LQ4 and LQ9 blocks are identical to the early LS1 in this regard. I wrote a CNC program several years ago to machine the back of these blocks for the cross over passage increasing the oil flow. I charge $75 for this modification.
Steve
__________________
Steve Demirjian
Race Engine Development
Oceanside, Ca.
760-630-0450
web: www.raceenginedevelopment.com/
e-mail: race-engine-development@***.net
Steve Demirjian
Race Engine Development
Oceanside, Ca.
760-630-0450
web: www.raceenginedevelopment.com/
e-mail: race-engine-development@***.net
FormerVendor
Joined: Nov 2005
Posts: 191
Likes: 0
From: Indiana
All of our pricing is posted on our website at http://www.erlperformance.com under products. You can click on sleeved blocks and you can see under ERL Superdeck 1 our pricing for our 4 bolts system is quit reasonable and it includes a set of billet main caps as well.
454 build LS2 LS3 or LS7 as a starting base for Darton Seal Tight dry liners. I have done quite a few of these blocks for 454" builds.
A good used LS2 block is the least expensive of the above blocks and the best of the three above for sleeving.
Steve
A good used LS2 block is the least expensive of the above blocks and the best of the three above for sleeving.
Steve
__________________
Steve Demirjian
Race Engine Development
Oceanside, Ca.
760-630-0450
web: www.raceenginedevelopment.com/
e-mail: race-engine-development@***.net
Steve Demirjian
Race Engine Development
Oceanside, Ca.
760-630-0450
web: www.raceenginedevelopment.com/
e-mail: race-engine-development@***.net
