SLP will soon have very affordable 402 short blocks ready to ship with no core required!

Crate-Engine-Assembly, "ZL-402" LS1 Short Block (High Compression)

With GM’s versatile "Gen III" small-block gaining popularity as the foundation for a wide range of high-performance engine build-ups, market demand for an affordable LS1 stroker package has become increasingly intense. In response, SLP Performance Parts has devised a revolutionary new Gen III stroker short-block assembly, one that offers unexcelled performance and durability at a truly accessible price.

Dubbed the "ZL-402" to reflect its beastly 402-cubic-inch displacement, the package is chockablock with such race-proven hardware as a new GM LQ9 block, a 4.00" forged steel crank, and 4.00" forged aluminum pistons. With the right cam and heads and a properly tuned PCM, the ZL-402 is fully capable of producing over 575 hp and a similar amount of torque in naturally aspirated form.

This package is sold only in short-block form, minus manifolds, camshaft, oil pump, and other ancillary equipment. The obvious advantage of this approach is that it allows each customer to formulate a parts combination that is perfectly suited to his or her needs. (For those who prefer "one-stop shopping," SLP offers a host of uninstalled options on an à la carte basis.)

Although designed primarily for use in late-model F-Bodies and Corvettes, the ZL-402 also makes a superlative choice for most street-rod, muscle-car, and truck applications. Best of all, it’s sold outright, eliminating the shipping hassles, protracted vehicle downtime, and additional out-of-pocket expenses associated with core returns.


Features
Built entirely from brand-new parts.
Sold outright*no cores required!
GM LQ9 iron 6.0-liter block (includes block plugs)
4.000" 4340 forged steel crankshaft, balanced to rotating assembly
4.000" 2618 forged alloy pistons (includes new rings and full-float pins)
402-CID displacement
6.125" I-beam rods
Includes new, factory-installed cam, rod, and main bearings.
11.3:1 compression ratio (nominal; ultimate compression ratio will depend upon heads and gaskets used)
Designed for naturally aspirated applications
Meticulously assembled to OEM tolerances and specifications.
Oil pump, timing chain, camshaft, pans, plates, and covers not included.

Looking for less compression? There will also be a 9:1 version available!

More details for each of these can be found on our website. We're currently taking pre-orders to provide you with one of the first that become available. They are expected to start shipping around September 1st! Our price is $3499.99 for each with NO core exchange required!




Order line - 1-877-4-TBYRNE
Send us e-mail

Price Match Plus policy

 

That's an awesome price.

When building a 346 shortblock, most of us opt for clevite or similar after market bearings, especially if we want to spin the motor to 6600 or higher. Are these the same/similar GM bearings as used in our stock shortblocks? Is there any experience in spinning these bearings to 7,000 rpm?

 

with a price like that, I expect them to sell a TON of those setups. I was expecting to see it with a cast crank and hypereutectic pistons, but it has forged internals too!

I'm sure our members realize how easy it would be to slap that puppy in place of their stock shorty.

 

I'm going to see if I can get some more detailed specs on these Monday. I was totally amazed when I heard the price so I kept asking if it was for a short block. I figured it was just a rotating assembly. They have something good for those too!

 

That's an incredible price. Can't wait for the pricing on just the internals.

 

The best part is I'm direct with SLP
Its a killer shortblock,its gonna be my present to ME for XMAS....

 

What cc chamber nets the 11.3:1cr? And any info on deep the nothces are in the pistons for max lift/duration acceptable with unmilled heads?
Sorry for asking, its kinda hard to look all over the net when your sitting in Afghanistan. TIA.

Charlie

 

thats great ..... what heads will give me this CR ??

hmmmmm , in these days I am looking for new setup .... it seems to me that this is a great short block with cooooooool price

can you ship it to Kuwait ??

thanks

 

I should have more specs on Monday (brand of parts, heads used to acheive that compression ect...). No problem shipping to Kuwait. We send quite a bit over there.

 

Thats an awesome price. I'm with everyone else...I think this will be a great seller and the basis for my next build.

 

im saving my pennies right now,

 

Damn! That's a good price.

 

Can i have the same components in the 402CID, but with my stock Crank and 4.100 BORE instead of 4.000. That should put me around 383CID big bore engine. How much would that save me?

 

Let me know when they are selling a 4.0" bore aluminum block

Dope

 

ARP fasteners on rods, mains, etc? Main caps steel? Thanks

 

yeah where is the aluminum version off the LS2 block?

I'd be all over one for that price. Add some good heads without core for 1800, your at 5300 and sell my current complete motor for 3K on the cheap side and 2300 dollars for a 404.

 

Here is a quick rundown -

Production 6.0 block
Internally balanced rotating assembly
SLP sped'd Eagle 4" crankshaft
SLP spec'd 4" pistons, 2618 forging (Ross or Manley). N/A version - approx - 1.2:1. Heavy duty forced induction version approx 9:1. Compression ratios are nominal, ultimate compression ratio wil depend on the heads and gaskets that are used.
Assembly is meticulously assembled to OEM tolerances and specifications.
Oil pump, timing chain, camshaft, pans, plates and covers not included.

The LS2 block would make a nice base for one of these packages. It shouldn't be long before we can start buying them.

LSs1Power: SLP won't break up these packages to go that route.

 

btw , is this an iron block ??

also , what do you think the price of LS2 will appro. be ??

thanks

 

If it were aluminum that would be THE SELLER! Too bad. Maybe Tom can get the SLP guys to read the replies, and see that some of us really want to use the aluminum side.

 

Why not iron? Isn't it stronger?