This is probably a very stupid question, but for whatever reason I've never seen it come up before in conversation.

I know that the LT1s and LS1s are quite similar, but can you drop an LS1 into a 1993 Z28 for example?

Just a quick question, thanks.

- Steve

 

actually, if I am not mistaken, the LS1 and LT1 are different. And to fit one in an LT1 body, you would need the 98+ front end

 

But wouldn't an aftermarket hood(not sure which one) for the '93-'97 body style allow the whole engine/intake to fit properly under there? 'Cause that intake manifold sits up too high for the stock hood to close...

And Robvas is right, you don't need a '98+ style front-end to do this. Unless you can get the engine/trans and most of the other parts for cheap(and have a donor car ready), it would be MUCH easier to just buy an F-body with the LS1 already in it.

Mike

 

Besides the induction issues, the PCM needs to be completely changed to an OBDII LS1 setup. One of the biggest differences from the LT1 and LS1 is that the reverse cooling flow through the heads plus the head bolt patterns, and the style of intake.

 

Thought they was both reverse cooling ? Also, An aftermarket hood would work, I heard somewhere of a guy who carved his factory LT1 style hood out with a grinder & cutting wheel ... but id think the extra heat from this woud fauck up the paint and make it peel or shrivle and look retarded ... an aftermarket hood is a must , and If you was going to actually do it , have an OBD II car to start with , itll make some issues a little less confusing , then youd need hte wiring harness and PCM for an LS1 , the rest of the stuff SHOULD bolt up with another hood ... and you Dont need the nose from a LS1 ... cause i saw an LT1 style with an LS1 in it on this board a while ago ...

 

you could use a cowl hood, ls1 is only slightly taller than lt1.. though now, I dont really see it being worth it.. maybe 20 years down the road when they've all been wrecked.. who knows

 

What about motor mounts? Is an LS1 a direct bolt in? I would rather put an LS1 in my car when I do my next engine swap.

 

It's possible to use the stock LS1 induction system if you have a ram air hood, but that's the least of your worries. The LS1 sits a few inches taller than its LT1 brethren so it's possible you'll need a taller hood. A modified LS1 wiring harness (to incorporate stock functions, such as interior dash, etc.), A/C lines to match the 93 - 97 car is needed. Also, if you can, use a 98 LS1 motor and PCM, because they use a single data feed to run the instrument cluster.

Once again, this is only scratching the surface of the swap. Be prepared for lots of unexpected issues to arise though.

 

My friend put an LS1 into a 93 Caprice and he wishes he never would have touched it. For the same money he put into custom fabrication, he could have had a SICK LT1

 

I thought I remember reading that the K-member has to also be swapped. The LS1 is a completely different engine design, not just a variation on the old SBC like the LT1 is. Your LT1 auto transmission or manual bell housing will not bolt up to the LS1, so you will have to change transmissions, too.

 

I too have heard of issues with motor mounts and the K member.

 

For the $$$$$ you are about to spend on that swap, you could just buy an LS6 BB and have more power, and you could reach greater times.