As Atomic already said, there are quite a few differences between the two motors to warrant the price difference.....

LS7 - 427ci, LS376 - 376ci
LS7 - Forged Steel Crankshaft, LS376 - Nodular Iron Crankshaft
LS7 - Forged Titanium Connecting Rods, LS376 - Powdered Metal Connecting Rods
LS7 - 211/230 591/591 Camshaft, LS376 - 226/236 525/525 Camshaft
LS7 - CNC Cylinder Heads, LS376 - As Cast Cylinder Heads
LS7 - Titanium 2.2 Intake Valves, LS376 - Steel 2.165 Intake Valves
LS7 - Sodium Filled 1.61 Exhaust Valves, LS376 - Steel 1.59 Exhaust Valves
LS7 - 1.8:1 Intake Rocker Arm Ratio, LS376 - 1.7:1 Intake/Exhaust Rocker Arm Ratio
LS7 - 7,000RPM Recommended, LS376 - 6,600RPM Maximum Recommended

So hopefully that builds a picture that these are two completely different animals. As far as if either are "worth it" to you that depends on your goals and how deep your pockets are. Many guys on here would not run the LS7 because it is really more geared towards lightweight vehicles and many guys on here would not run the LS376 because it is basically a stock LS3 with a cam.

Ultimately though, the choice is yours. Good luck!

 

The LS3 crates are pretty reasonable for what a guy gets power wise with them. I went with the LS376-480 for my Jimmy because I didn't want the CT 525 cam the other one has. Price wise too you are way off on those crates. I paid $7600 for my engine in Canadian dollars last summer.... at the time it converted to $5500 USD. The CT 525 cam version was only another $500 more Canadian than the one I bought so I say shop around a bit. Mine came from a high volume crate engine selling GM dealership.

The same guys I got the LS3 I have from have the LSX 454 on their site advertised for $10,900 Canadian......so that would be $8115 USD at todays exchange rate.

I was going to build one as I have a basically new set of LS3 heads as well as the complete intake manifold I got for $300...... but couldn't find a decent 6.2 block at the time. Not to mention this took zero effort lol..... although I did do rocker trunions and removed the secondary oil pressure relief out of the oilpan lol.

I have less into my forged 370 I am dumping in the 04 (without the blower... that kind of doubled the price lol) but that is not my labor factored..... and my time is worth something to me... at my chargeout rate..... well..... I would be way over lol.

 

I'm not buying either one of them. I just asked because it seemed a little outrageous to me that there was $5400 difference between the two engines and the cheaper one had more power. I do understand there are significant differences in the two but when you boil it down to dollars per HP it looks like a loser.

As far as being way off on my prices, those are the prices direct from Jegs, GM, etc. Also note the price I quoted was for the LS376-525, not the 480 you bought. I provided the part #'s, you can look them up yourself. If those same part #'s exist someplace cheaper, that's great; I wasn't price shopping as I'm not actually going to buy one.

Any number of more powerful combinations can be put together cheaper, that is understood. My question was simply regarding a couple crate engines. Thanks fellas

Richard

 

I also pointed out the 525 is a whopping $500 more. It's the exact same engine I have with a different cam. Same springs, pushrods and all the rest lol...... However I was pointing out for anyone actually interested in buying one of those engines you should call some high volume dealers.... as opposed to the thread debated rip off pricing. I don't need to look them up thanks...... I actually have gone one step further and bought one lol.

 

I'm considering buying a 6.2 for my rcsb. Where are you finding your best price please sir?

 

Settle down fella...it's not a contest.

Richard

 

No.. its just pointing out to others above debating about the high prices that those prices listed aren't the standard to go by... that's all. I never was talking to you originally in the first place lol. No offense I guess

 

I'm in Canada so I am likely of little help lol. I would start with a high volume GM dealer, however Scoggin Dickey as an example looks useless, lol. Take the B15 version of the LSX376 crate. Scoggin Dickey lists it at $8376.50 USD and Davis GM, where I got my engine, has it for $8831 CAD dollars. At todays exchange rate that is $6589.07 USD, so obviously that's a good bit cheaper, like $1800 cheaper than Scoggin Dickey for the exact same engine. I know with Davis if you talk to Colin it's another couple hundred less than the website too..... I doubt you need to import one from Canada as there is US dealers I would imagine with the same price base.

Even my engine i bought now as example. Scoggin is $7186.74 and Davis is listing it at $7761 Canadian which is $5791 in US dollars. It's funny too as the 525 hp version is listed $1000 higher than the 495 hp version I have from Scoggin Dickey. All that changes is literally the camshaft itself, and that camshaft is not $1000 to buy anywhere lol. Mine already has the 3 bolt cam gear being it's the GM hot cam whereas the 525 hp cam just has more duration and a tighter LSA. They both utilize the same lift and same springs and all. Mine was so close in price to a stock LS3 I just went that way over buying an LS3 and camming it on my own. Davis doesn't list the 525 hp version on their site but when I asked it was $500 or even less difference for it to the 495 hp version I got however the cam in the 495 makes more sense for my application.

 

lol...none taken, then.

However, on that pricing subject I wouldn't be so quick to assume the engines can be had cheaper, without actual sources (U.S.) to post. Everywhere I see those part #'s offered here, the pricing is pretty uniform across the board, almost as if...it's being enforced. If you did find some cheaper, it would probably be helpful to those interested.

Richard

 

Most wholesellers have in their contract with the parent company a clause stating what they can advertise as the price in a retail environment. Meaning they cant post any lower than a certain amount on a website. Of course they could sell it to you for whatever price they want, they just cant advertise it online.