pretty new to LS1's and im looking at a camaro with an LS1 in it The motor is listed as having these parts in it and I was just wondering why such a mix of parts.
LS1 Block/heads
LS6 oil pump
LS2 timing chain
LS7 lifters
LS6 intake

 

I see no problem. seems the long-block assembly probably hasn't been apart, but the car has probably, at some point, had ALL the typical bolt-ons done to it. The engine's probably seen an agressively-driven life, but shouldn't be hurting despite that.
This engine's worth about $1,500 if it's '01-up, look for 241 heads, less $ if it's older. If the heads have perimeter-bolt valve covers, I suggest an opening offer of $1,000.
Earlier blocks and cranks are not as good, and earlier heads don't flow as well.

 

actually its an 02 motor, the car has a ton a of aftermarket parts so i was assuming it has had a hard life, nothing i wouldn't do to it though. what is the big deal with 241 heads i see that number often when im looking at LS1 motors

 

They're the best of the LS1 heads. Nowhere near as good as 243 or 799, however. Also not as good as milled 317 heads.

 

many of the parts you listed are the best of stock replacement parts. if you're looking to beef up a stock setup without going aftermarket, those are the parts you can grab. cheaper than buying new if you can find low miles from someone looking to upgrade. went that route for some of my goodies too; $25 for a stock oil pump, $20 for a ls2 timing chain.

 

Ive always been told the early blocks were stronger than the later (ls6 blocks 99/00 are ideal blocks though as they are considered the strongest of the aluminum)

the cranks were just as strong but like you said the heads don't flow as well (until the 97/98 heads get ported) but at that point the ls6 heads are a better choice for the time/money

the original oil pump had issues and the later gm number is the same as the ls6 pump now

 

The early stuff is NOT stronger. Overboring the early blocks is more likely to result in a ruined block, because of porousity problems. Early cranks weren't held to as tight of tolerances. There was NO LS6 until '01 Anything LSx related that's pre-'01 should be avoided. Whoever told you your falsehoods knew these truths, and was trying to sell you the inferior stuff.

 

no selling just info was i had read and heard.. no need to get snippy a stronger block is all

 

I have almost the same setup.

LS1 shortblock out of a 2000 camaro
LS6 heads, flow better more compression than LS1
LS6 intake, flow better than LS1
LS2 timing chain, Stronger than LS1
LS6 oil pump, I don't know about this, I used a Melling
LS7 lifters, replacement lifters for LS1. I think the LS1 lifters are discontuined

 

S10 GUY, some friendly advice, before you buy too quickly, you should educate yourself on the subject. There's plenty of help right here. Dean