hey dont know where to put this, but this section gets a lot of hits, so here it goes...

When did they start producing the LT1? I looked it up and got this --> http://www.hpsalvage.com/lt1.htm
If this is true that means the LT1 was introduced in 1992.

Well what is the difference between the LT1 and this --> http://www.humptydumptysclassiccars....ore.php?id=213
This is a 1971 Corvette "LT-1".. what is the difference in the motor.. is this a LT1?

 

The newer LT1 was put into Vettes in 92 and the fbodies in 93. They called this new engine the LT1 as a nod to the original LT1, which was an engine that had a more agressive cam and better heads than a run of the mill 350.

 

OK, The LT1 was in 93 camaro's. It was produced in 92 for the 93's. It stuck in the camaro til 98, when they switched over to the LS1. Difference between Gen 1 LT1(in the 71 vette) and Gen II(93-97 maro), is HP. They both have the same displacment, but the Gen1 had 255 hp where as the GenII had 275. There might be a few more differences, but those are the only ones i know.

----> The GenII LT1 and LS1 were in vettes b4 they were in camaro's, but i dont know the yers for those.

 

LT-1 is the old one, LT1 is the new one. At least that's how I've always seen them differentiated.

 

Lol did research long ago the actual first one is an LT-1 and the 93-97 f-bodies or 92-96 vettes where lt1's or L99's as some call teh 350 tpi motor was called an L98 so the difference being back then Emission and bs gosh why but ne ways. The LT1 has the cast iron block but aluminum heads and reverse coolant flow for supposedly more hp some how. And lets see what else hrmmm well FI of course. More agressive cam adn prolly bigger Ports on the heads. And in 93 was the last year for speed denisty system on the intake. See gm pretty much did this here. 350 TPI had like highest i believe i have an 89 245hp/345torq then LT1 from 93-95 this only average f-bodies not counting the ws6 and ss's. 275/325torq more hp less torq. Then 96-97 285/325 then 98-02 f-bodies got ls1's and they have a lil less torq the average not counting the ss's and ws6's and they have more horse. So thats why pretty much the older chars are more jumpier on off the line then the ls1's they usually come back at like 60ish and pull. My buddy bought a 03 GT it was nice 5 sp ne ways he raced a 93 T/A we had in town got his butt kicked many of times and then he did up grades out the ying yang and finally they ran next to each other and some days beat him pretty much was a drivers race. But he got smart and sold the car and got a 99 LS1 Camaro which is even faster

 

Sorry man but a few things you posted a slightly off balance...

The LT1 should NEVER be referred to as an L99 (I know the L98 guys got the shaft and no one respects the engine but you can't make it better by skewing facts)

The L99 is a REAL RPO and is a 4.3L version of the LT1 and has a smaller bore and sadly made 200 hp and 245 trq. The LT1 was slightly underrated at 275hp as most people using an agreed DTL % saw ~300hp at the crank. These numbers actually line up with real world dyno results on stock LT1s so its really hard to disbute.
(300hpx15%DTL=255rwhp)
(300hpx18%DTL=246rwhp) = Some claim the DTL is less than 18% in the 4L60 so it would be slightly more whp.

Here are actual dyno numbers from an LT1 M6... 256/294 (using the DTL values you would find torque to be around 345~350ft lbs crank)

Also we know the L98 is a trq producer but lets not use rated trq numbers..the LS1 dynos over 320rwtrq in stock form and the L98 Ive seen at 317rwtrq modded. (maybe you can find solid info proving otherwise?)

Ls1 cars don't come off the line slower than other cars unless the driver can't launch...

The LT1 had reverse cooling to allow the 10.5:1 compression ratio and prevent detonation. Not to mention better flowing intake/heads and different runner lengths (its easy to see how they extracted more HP and in fact worth reading up on).

I see you did some research but you may have read through it too quickly or it's just been a long time since you did any.

 

Im 52 years old, and remember the LT-1 in the 1970 Z-28. It was 350 ci and 350 hp. One of the fastest cars I ever rode in, I never drove one.