I have learned a lot just since I started this thread, I dont want to give the impression that im trying to build a 1200hp monster right off the bat. Id like to drive it on the streets for a while with like 450hp. A sleeved shortblock and my my ported ls1 heads and a mild cam will get me that.

 

How far is Beebe from Fayetville?

 

The ls4 block is not shorter, the. crankshaft Snout is shorter, and the bellhousing is 60* vs 90* bolt pattern. Everything else is LS compatible

Why can't dry sleeved blocks be run on the street, and how much more does wet sleeved blocks cost?

 

Whats keepin you from just dropping a 6.0 in by swapping all the parts from your engine? If block is same dimensionally then all you would have to do is swap your ls4 crank with the 6.0 since its the same stroke?? I might have missed something...

 

I have never heard that dry sleeves are not streetable? You need to talk directly to ERL

 

Correct, miss posted the crankshaft is shortened by 13 mm – 3 mm at the rear and 10 mm at the front.

 

Its about two hours away.

 

Use an iron block 6.0 and no re-sleeving needed. Stock sleeves are not aluminum. 1200 hp FI will not be cheap but obtainable on a stroked 6.0 with enough boost. Your biggest issue will be holding the heads down for that much boost (holding reliably that is).
At that power level, your wife will be twisted, you'll be looking in excess of 40k to keep it on the road.
In any case that power level on the street is ridiculous and deadly. For race only yeah.

 

Not sure why they would say a resleeved block isn't good on the street. That's some bad info as we have tons of them out on the street for years. Mighty mouse the 4-5 time true street champ comes to mind with tons of others out there.
Once it's resleeved the bore can go up to 4.185 for NA and 4.125 is common for boosted applications to retain more head gasket width between the cylinders.
As far as power using a 5.3 block to re-sleeve, that is what we used in the Ohio Boys tall decks that run 7.20's @ 200 MPH @ 3300 #'s. So they are plenty strong.
The LS7 blocks are prone to crack in the cylinders when you push them hard especially with power adders. We weld a ton of them and re-sleeve. Save the money and get a 5.3 core block vs. the LS7.

Ray, First pic I've seen of your car together. Nice!! Another 5.3 block BTW.

 

Go to the build thread on here or the bullet and see the engine bay pictures

 

Just got off the phone with Seth from ERL, he recommends the gen4 siamiesed 5.3 and it will run about $2,250 includes ARP main studs and working your pistons if you already have them.

 

I just saw that, Looking good Not too much longer now.

 

The LS4 block is a non siameesed Gen III internally. It is MID or wet sleeve only.

Most but not all 5.3 L aluminum truck blocks are Gen IV castings and can be dry sleeved to 4.185" bore. I sleeve a lot of these. Just picked up another core over the weekend.

The front drive LS4 block has a completely different rear bolt pattern from the rear drive blocks we are all familiar with. If I remember correctly (been a while since I had an LS4 block here) the engine mounting points on the side of the block are different as well.

Steve

 

Why sleeve it at all ,,,,,,,,,,,if You plan to eventually boost it ,,,,,,,,,,just get an iron block 5.3 ,,,,,,,6.0 ,,,,,,,,,and put forged rot *** ,,,,,,,,,,You can easily throw that kind of power at the right rot *** ,,,,balanced correctly and water or meth inject with the boost .

 

Bellhousing is definitely different. It is quite possible that the engine mount; mounting holes are different too
The rest of the LS4 block is supposed to be based off of the LS2. I am pretty sure that the fixtures used for sleeving, are based off of the 90* bellhousing, and standard LS engine mount bolt holes

I am willing to sacrifice my block for testing. I want a 6.0L

 

Somebody sleeve a LS4!

 

Then do it! just buy the Darton MID sleeves and have them put in, not like its a big deal and it has already been done before im sure.
RED or ERL can do it just like any other block

 

I am going to contact them tomorrow. Think I'll need about 4K

 

Spoke to Steve at RED and have come up with this https://ls1tech.com/forums/generatio...l#post17014472

 

We have done several of these using our Superdeck 1 system. These cannot be Dry Sleeved though.