i have a 98 ls im going turbo soon picking out parts i need here and there, but i have an ls b18b with 104,000 miles should/ and if so buy a b20 what would i need to complete the swap besides motor and axles

 

Would you even have to replace your axles? Im curious, I plan on using a b20b/z short block later down the road.

 

yea because they seem like pretty simliar motors

 

anyone?

 

I forget what exactly we changed on my buddys DA when we put a b20 in.

I think to put it in we had the b20 motor and swapped the b20s crank pully, Intake Manifold, header, fuel rail, injectors, and ecu with the b18 parts and one or 2 of the motor mounts (forget which ones). Other than that everything from the DA bolted up to the b20 motor IE; DA axels, wiring harness, parts you put on b20 motor, shift linkage, etc.

I may be missing one or two things, I would do a search. But it is a quick guide.

 

axles plug into your transmission...
So if you keep the same tranny, you keep the same axles.

For a turbo b20, depending on how much power you want to make, you may need to sleeve your block. The cylinder walls on a b20 are pretty thin, and can get fucked up pretty easy.

 

u think its worth the swap or just turbo my ls

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LSTEG98 &raquo;</TD></TR><TR><TD CLASS="quote">u think its worth the swap or just turbo my ls</TD></TR></TABLE>

Have you done a compression test and leakdown test?

 

not yet

 

b20s are fun and have nice torque. It depends on what you want to do and how much money you have. You will be able to run 6-7 pds on the b20 and should not have any problems. Just make sure with either motor your get good tuning, that is the key.

 

Do one, and then come back and tell me.
After that, I'll be able to accurately tell you if it's worth it or not.

 

b20 i should b able to keep a/c and p/s right?

 

I believe that the b18 brackets and ps brackets will bolt up directly to the motor.

 

yeah, definitely.
A b20 is basically just a bored out LS engine, I think.

I dont think there are any extra things you have to do, but dont quote me on that.

 

Well I know for a fact we had to change the crank pully and 1 or 2 of the motor mounts. Plus the b20 has a taller IM that doesnt flow as good as a b18s. So most people change them and if you do you need to b18 fuel rail then.