Hi, I'm new to the LS1's & LT1's & have been asked to do some work such as engine rebuilds & things on them.Are there any good article sites that explain a little about these engines such as forged or hypertuetic pistons,weak links in the engines,common malady's,& engine pullsut the top or thru the bottom? I will probably be asking some real dumb questions about these but I simply have NOOO experience w/h them at all so any help you guys can give a poor soul would be most appreciated! Good Looking site BTW! Scott

 

try searching and asking around in http://ls1tech.com too

 

Thanks! That's another site I'll bookmark.

 

Hey,

Well, as far as I know, it's supposed to be easier to pull the engine out from the bottom of 4th-gen ('93-'02) F-bodies than it is from the top, but I think it can come out the top if you want it to. To pull it from up top, you'd probably have to remove the rad to give more room to pull the engine forward first, since they sit so far back underneath the base of the windshield.

As far as rebuilds go..............sorry, I can't tell ya much there, but all I know is I just read somewhere recently (I think it was somewhere on this site) that there's a bit of misconception about hypereutectic pistons, and that for most applications (except forced induction or frequent nitrous use) it's better to use them, since they don't expand and contract quite as much as forged pistons do between cold starts and full operating temp., so they will be a better "fit" most of the time. As well, they are supposed to be durable enough to withstand power levels of 400-500 HP no problem (again, N/A) and not until the higher power levels are forged pistons more of a necessity.

And just to let you know, basically nothing is transferable from LT1's to LS1's or vice-versa.............the LT1 is a Gen-II Small Block Chevy, and the LS1 is a Gen-III SBC. The bore, stroke, crank, heads, intakes, pistons, etc., etc., are all different, and even the mounting positions are different, so it's not like swapping a 305 SBC for a 350 or 400 SBC, you have to change/modify/customize the mounts to switch an original LT1 for an LS1, for example. Well, hope that helps you get started.

 

Some good basic info in the LS1...

http://www.idavette.net/hib/ls1c.html

 

Welcome to the board. Here is some info for you.
http://www.idavette.net/hib/ls1c.html
and
http://www.tenperf.com/

 

I have done engine swaps on both lt1 and ls1 cars. I did the lt1 through the top and the ls1 through the bottom. I would have to say it is much easier to pull the engine from the bottom. you drop the whole cradle assemlby.
-matt

 

And everyone has a floor lift right?

Not very hard to pull out the motors from the top. Just need to know how.

 

That's what I was going to ask,I don't have a lift so it's not going to be that easy.Any tricks to getting it out the top? Thanks for the replies so far guys it is helping.Scott

 

I just pulled my motor last Saturday for the 5th time.

I take the radiator out, the waterpump off and the intake off. Disconnect anything holding the motor in(tranny, grounds, headers, mm bolts, common sense stuff) and just connect the engine lift to a chain with very little slack in it half way between the mid on the heads to front of the heads. Lift it slowly, pulling it forward along the way. Then just have someone lift the front of the motor with a prybar and pump like crazy and rip the bastard out.

Comes right out, hood stays on, only takes a few hours.

Putting it in, use clothes hangers and put the motor at a 45 deg angle and gracefully slam it in...

Of course, I am a hillabilly.

 

Cantonracer,Thanks for the info! That's what I was looking for someone who has actually done it before!I was wondering if you could pullit that way & now I know! Thanks again,Scott