I have read countless threads about LS1 swaps and I am definitely sold on the whole idea. I would like to take it 1 step further and swap in a brand new LS2 long block, harness, computer, tranny etc... into a black 3rd gen rx-7.

Its not going to be cheap but this is something I need to accomplish.

I would like to know if this project is even possible and if so then what would be the main challenges compared to the standard LS1 swap.

 

can't do it... it will only fit in the RED and BLUE 3rd gens...












sorry, it was just such random information "into a black 3rd gen..."

 

lmfao... now that i read it.. your right it made no sense to add that useless bit of info.

 

just get an ls2 block and use the ls1 conputer harness and trans , it would be cheaper
and yes you can do it but you wont be the first

 

DAMN! lol

I asumed that since the LS2 block is new I would be the first.. Oh well, at least I know it can be done now.

I do hear you on the price savings but I could care less. I wan't a true LS2 swap.

 

You could always try the LS7...

 

That would be sick but the cost difference between the LS7 and LS2 is too huge. Plus the long block LS7 won't be availible till after the c6 z06 is released.

 

im pretty sure there is no editing soft ware for the ls2 yet so it would be real hard to start up the car once you got everything in plus if there is a big difference in the pcm it might take a bit to get the pin out figured. Also the ls2 is in the corvette and thats a rear transmission car, the new GTO has the ls2 in it but its the same t56 i have in my car. the heads are the same LS6 heads. oil pan ,alter., throttle switch, and a few others are things that will need to be replaced

 

LS2 edit has recently been released so that would not be an issue.

I was unaware about the rear tranny in the new c6.

 

You will probably run into the same issues as guys using the ls6. Some concerns would be the oil pan, accessories and I believe the ls2 also uses the "fly by wire" throttle body. Clearance may be an issue with the larger ls2 intake manifold and tb as well. I haven't seen any ls2 pullouts for sale, but would imagine they are quite pricey right now.

 

Well I guess its not worth the trouble. But the stock HP of the LS1 is not going to be enough. I guess a stroker with LS6 heads would do the trick.

 

lol.
ls1 = not enough
but
ls2 = enough?

crazy kid, just swap a cam and ported heads into that LS1, tune it and you're all set... depending on the cam you choose, you can see anywhere from 350rWhp to 500rWhp.

 

What would you guys suggest to be the ultimate setup for the FD? I would like to keep the drivability since its daily driven. I am looking to spend $10,000 - $15,000 for the engine, tranny, clutch, harness, computer, etc...

 

My goal is the most reliable and streetable hp that does not require an aggressive cam (I prefer near stock idle). I would be happy with 120-130mph trap speeds and will never use nitrous.

Would you say Rapid Motorsports is the best? How do they compare to Motorsport Technologies Inc?

 

After a little more reaserch I am looking at the MTI 387cid all-bore long block with ls6 stage3 heads.

 

You will not need a stroker to trap 120-130. I trap almost 120, running out of gear with boltons and a small, 224/224 .563 112 lsa cam. Just swapping in the 3.90 gears and or switching to taller tires should put me over 120. I hope to be in the 125 range with some longtube headers and larger exhaust. After some AFR 205cc heads, more tuning there is a great possibility of having a car that idles well and traps 130.

Check out this stock bottom end, hydraulic cam'd c5 - http://forums.corvetteforum.com/showthread.php?t=948001
535 rwhp, 140 mph traps. Sure the cam is much larger than you are looking for, but there are quite a few other cars making 450+ w/ the afr 205 heads and daily driveable cams.

 

I trap 127mph with my ls1/t56 but I am doing it with a 233/239 cam.

 

That’s impressive power from a stock bottom end. The only difference is he is running 12:1cr on 104 octane fuel and that cam is mega aggressive.

I am looking for effortless 120-130mph trap with very mild street cam and the 387 all-bore will more than likely fit the bill. The only thing that concerns me is the wet/dry sleeve issue.

 

Yes, but you could be the first

 

Its going to be mega expensive for the LS7 crate engine. It would be the coolest but not cost effective. I guess you have to ask yourself how much HP is enough... I want 450-550rwhp.

I am not willing to sacrifice drivability for performance since its my daily driver.

 

Then you'd better start thinking about forced induction.

 

http://www.motorsporttech.com/images...2ab_dyno01.jpg

MTI dynoed the 387cid all-bore @ 450rwhp so in my opinion that is one hell of a good starting point. Don't you think I could get 100rwhp more and still keep drivability?

 

That depends on what you consider good drivability. You'd need a solid roller cam and a very good set of ported heads to reach 550 RWHP (~640 flywheel) naturally aspirated with 387 CID, and drivability is going to suffer as a result. You definitely won't have a stock idle or exhaust note, and you may have cam surge, as well as low vacuum.

Considering that the 454 LS1s that I've seen dyno sheets for so far have barely topped 640 horsepower naturally aspirated with solid roller cams, you'd have a pretty ragged 387 to reach that level. I'm not saying that it can't be done, I'm just saying that if drivability is your chief concern, then that's definitely not the solution.

 

ok so now youre looking for 550rWhp and you want excellent drivability?
depending on tuning, gearing and tire choice it can be done....
-dont forget to put in a bullet proof rear end for that kind of power.
-hmmmm, dont forget you need wide *** wheel/tires to put that power to the ground.
-oh yeah dont forget you should be looking into coilover suspension to keep it in control.
-it sure adds up the costs once you go over stock LS1 output... just a FYI...

 

Anyone done the swap yet? How much power are the LS2's putting out?