the ls1 i have is a 98 it is recommended that i only boe it .004 " but plan to grab a 4" stroke crank my rods will be 6.125 .927 wp's so what pistons will work...i searched texas speed and didnt find a perfect fit..mahle is the closest i could come but it clls for a bore of 4.005...thats more than what is recomended..should i mind the books? or will i be ok boring it to 4.005

 

According to the many articles I've read, 4.120" is absolute maximim with a recentered bore.

3.995" is about the point when the inner sleeve is sacrificed.


I would shy away from 4.005" on a stock block.

 

cheap way would be to get a iron 6 liter block. That is the best way to get a 4 inch bore.
Otherwise, you need to re sleeve the alum block.
Or, you can get a LS2 block.

You can't just bore your LS1 block out to a 4 inch bore. You don't have enough liner.

 

Bore your aluminum to 3.905" and use the 4.000" Stroke crank and the 6.125" rods. That will get you a 382ci Stroker.

You won't gain that much power going to a 4.000" Bore. Diamond has a piston on teh shelf that will fit your application.

If you wanted to do a 4.000" Bore set-up you can use an LS2 block.

 

If you want to reuse the stock block I"d hone it and leave it alone. That picture is a perfect example of what will happen if you bore it too much. Or just spend the money and get a sleeved block, or have yours sleeved! If it were me I'd just stick with the stock bore!

 

ok if i go that route...but still want a rotating assembly..what is recomended?

 

Just call and tell them what you have and what you want. Just because you do not find it on their site does not mean it does not exist.

 

i tihnk instead ive decided to go to the buildup route starting with the TSP aluminum ls6 block..can anyone tell me the stock bore/stroke on these..? id appreciate it

 

i think stock bore is around 3.898

 

ok just wondering so i could start looking at rotating assemblies.

 

what is better that ls6 block or the 6.0l...and the 6.0l do they sell heads specifically for that...or are most heads compatible like patriots ls6 heads and such...sorry for all the questions guys..this is my first ls1 buildup im trying to get my **** straight before i dive into it..

 

well, a Ls1 should be fine. The 6.0, you can go LS2 block aluminum, or iron block. As for heads, while patriot's stuff is cheaper, you might wanna check out the thread at the top of this section titled, "Patriot recall". They are having some problems right now. They do have 6.0 heads, but i would probably go with some milled heads and a valve relief piston if i were you.

 

well patriot says the problem is working out..im choosing this route because the ls1 i was going to buy today was sold under my feet...and besides no sense in tearing down a perfect ls1..so i figure start with block like all my other engine builds and full customize it to my likes..im sure these are all questions i can ask the guys at tsp with a phone call but id like to not drive them crazy so im aksing you guys..

 

why dont you call TSP and ask them what they think about the Patriot heads. If you're in no hurry to buy heads today, save your money, and get a better quality head

 

trust me im in no hurry..ill call tsp weekend probobly so i can arraneg a setup so i will no what im saving for..

 

If you are buying a block then you might as well buy a truck 6.0L or the new LS2 6.0L block and take advantage of the bigger bore. Buy the heads you want before buying the pistons so you can set your compression with the piston dish.

 

how much will the ls2 block cost me?

 

I have a few brand new LS2 blocks kicking around if your interested.. I can also machine them up if you need someone to do the work anyways? Shoot me a PM
Dave

 

ok its been decided since my other motor sold ive decided to do an ls2 buildup..im not building piece by piece im collecting parts piece by piece..then put it togetherwhen i got all the parts collected..i would first like to applaud the people at TEXAS SPEED for being such a help to me today..whomever i talked to was very helpful. the setup i plan is like this..

the ls2 block
crower rods 6.125
eagle crank
diamond pistons(need help fidning appropriate set)
comp roller rockers and lifters pushrods
PR dual valvesprings
TSP magic stick

the rest ill worry about later..cuz for now this is the stuff coming in the near future..

hows it sound?..any suggestions..

 

We now stock a LS2 piston, in a flat top, and a dish ready to ship. Here are the specs on our shelf pistons:

11540 - Street & Strip Flat Top - 2cc
Bore Stroke Rod Pin C.D.
4.005 4.000 6.125 0.927 1.125
11550 - Street & Strip Dish - 10cc
Bore Stroke Rod Pin C.D.
4.005 4.000 6.125 0.927 1.125
These pistons are now in stock and ready to ship to you!

Give me a call and we can see what part we need to get you to fit your setup.

Thanks,
Mike Panetta