First off let me say I'm more interested in putting LS3 in my 1965 C10 pick-up, I've wanted to since first finding out they made crate engines back in fall of 2008.

Of course the prices went up on them over the years, and I was saving up to buy one, decided to buy Edelbrock Pro flo 4 multiport fuel injection for the 396 big block in the truck.
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Still think about new LS3, and now GM sells LS3 long blocks for $4999.00 for the 430 HP version, is it me or is that a pretty good price?

The oil pan looks like it would fit truck or classic cars, unlike the oil pan on the complete LS3 engines.

Of course need LS3 intake and fuel rails injectors, about a grand at summit, need coil packs, not sure on price, and water pump, not to mention all the other stuff to make it work in old truck.

It might still be less than the regular LS3 430 HP long block, need to add it all up.

Then I got to thinking, if I bought this and put in C5 I could probably reuse the LS1 coil packs, so would only need LS3 intake, fuel rail injectors throttle body, well maybe not use that throttle body as I've read it may not work with C5.

My Corvette runs great and is just under 100,000 miles, so it doesn't need LS3, but sounds fun.

I'm thinking the prices may rise and just buy it, I missed out on the $6200-6300 LS3 engine years ago.

 

https://www.karlkustoms.com/product/...hp-long-block/

They also sell the ones with Hot Cam, and the ones with ASA cam like the complete LS3 engines.

 

Better off having it custom built to your specs. Contact Thompson Motorsports and get a long block built to your needs with a warranty.

https://www.thompsonmotorsports.net/

Call Dustin (972) 853-2450. Great group of people.

 

I've heard the LS3 with the ASA cam is awesome sounding at idle. Isn't the LS3 with ASA the crate 480hp version?

 

480 HP is hot cam, 525 HP is ASA.

 

Might work for a different branch of the first linked company.... LS3 crates are extremely hard to get right now.... I know we've got a few recently, but the numbers are crazy slim over the last 6 months.

If you're really interested, call em up and ask to talk to Seth. That's not me, but he's far and away our most knowledgeable LS guy at the Kustom shop.

 

That's right!! You're correct. Thanks for jogging my memory......

 

what motor did your c10 originally come with?
if a 350.. may want to consider a zz6. pretty crazy hp for a 350 block (405), full warranty, and is sold by GM turnkey-- with everything from the oil pan to the plugs and wires. They even sell a version with TPI.
I put one in my '88 cheorkee (lots of reasons specific to that application) and couldn't be happier.

 

Originally a 283 with 2 barrel carb, 2 speed power glide, then a mild 327 and TH350, and last 396 BBC with TH400.

That ZZ6 sounds good.

 

check it out.. it's not quite as good or as advanced as an ls, but it literally is a drop in for the 350. Uses different headers, but otherwise all the accessories on the front end are the same as the 350, I believe (not 100% sure) you can use the same intakes, etc.
The car'b one puts out 405 hp/ 405 lb*ft (ZZ6 Turn Key Small Block Crate Engine: 19351533 | Performance (chevrolet.com))
and the EFI puts out 420hp/408 lb*ft (ZZ6 EFI Deluxe Small-Block Crate Engine | Chevrolet Performance)

The turnkey packages are around $8-$9k, but you're literally getting everything you need, except fluids, plus a warranty (and I think they're still doing their $250 rebate deal). I already had an old Gen I 350 in my cherokee, it literally took me a weekend to drop in the zz6 and get it running, and that was taking my time. And I can tell you from personal experience the motor runs fantastic, runs very smooth at idle, and with EFI (I added my own EFI (TBI), they didn't have the EFI package when I bought), it lights up when you hit the gas.

EDIT: they actually also include a case of mobile 1 with the motor.

 

If you dont need all of the auxillary components when doing a swap (serpentine accessories, intake manifold/fuel rails/injectors, oil pan, exhaust manifolds/headers, engine covers, wiring harness, sensors, etc etc etc), then a built longblock from a REPUTIBLE vendor is much more cost effective. You could pick up 408 stroker shortblock with aftermarket heads for that price...

 

No love for the 396? Wouldn't be hard to make 500/500 with a large oval port head, a cam, and some compression, a couple twelve packs, and a weekend.

 

A VERY good suggestion. There is absolutely nothing wrong with the original SBC. But if the OP goes the ZZ6 route, before he lays down his $$, he should check out the 383 crate motors. They aren't much different in price, and may make a better 'truck' motor. Just sayin'

 

Vendors may, or may not offer that GM warranty. BUT-OP, and this is important-It used to be a requirement to have a GM dealer do the install, in order to qualify for the warranty. IDK if that's still the case, or not. If the warranty is important to you, I'd look into the install requirements.......

 

I just purchased an ATK LS3. 620HP. Depends on how much money you want to spend on horsepower. I’m doing it all to my FRC. Transmission, Clutch, Motor, Cooling, Suspension an total interior. That’s just me though lol!

 

Why does a brand new 6.2 liter LS3 produce only 25 more HP than a 5.7 liter LS6? 30 more CI, taller cam, bigger ports. Shouldn't it be stouter than that?